Using a laptop without a battery. Is it possible to use a laptop without a battery

Laptop batteries don't last forever. Battery life is directly related to the number of charge cycles. The more times a battery is charged, the shorter its life span becomes. Therefore, in order for the battery to last longer, you should use the battery as little as possible.

If the laptop is intended exclusively for home use, you must remove the battery. Turn off your laptop before starting work. You should make sure that the laptop is completely turned off, and not went into "sleep" mode (hibernation mode), which sometimes happens on some devices. The operating system must complete its work.

You can not remove the battery if the laptop is connected to a 220V network. The power supply cable must be disconnected from the laptop.

After that, it is recommended to turn the laptop over and remove the battery. In modern laptop models, it is easy to remove the battery by moving special sliders located on the bottom wall of the device to the desired position. In order to remove the battery in older laptops, you will need to unscrew a few screws with a Phillips screwdriver. Then you can remove the battery from the tray.

An important point before turning on a laptop without a battery is to follow the sequence of actions: first, the power supply is connected to the device, and then the adapter is connected to the AC mains.

To avoid problems during power surges, you need to connect the laptop to the network using an uninterruptible power supply. Prior to this, the role of the voltage stabilizer was performed by the battery.

The operation of a laptop without a battery will allow the battery to last for quite a long time, or rather, as much as the charge-discharge cycles in the battery.

SovetClub.ru

If the laptop is without a battery, can it be used?

Today, you can often find a discussion about the operation of a laptop without a battery. This question, for various reasons, worries laptop users. Someone motivates this by increasing battery life, others by the recommendations of acquaintances, and still others do it simply because they read about it somewhere. In this article, we will try to figure out whether it is necessary and possible to use a laptop without a battery.

Why use a laptop without a battery?

Indeed, why use a laptop without a battery? When answering this question, users usually say that this saves battery life. Some have seen information that the battery is very vulnerable, and has a limited number of charge and discharge cycles. For this reason, they remove the battery from the laptop and work directly from the power adapter connected to the mains.

Regarding the limited number of charge-discharge cycles, we can fully agree. In modern laptops, lithium batteries are installed, which, after 500 charge-discharge cycles, significantly lose capacity (up to 20%). With active use, the laptop battery can come to this state in a year. You can also agree with the sensitivity of the laptop battery. Lithium type batteries are extremely negative about overcharging and deep discharge. All this is true, but why use a laptop without a battery?

Indeed, in a modern laptop (meaning a normal product of well-known brands, and not a Chinese noname), a battery or mains power supply scheme is provided. To do this, the laptop motherboard has a special microcircuit that controls the power. How does it work?

When you plug the power adapter into the laptop's power jack and plug it into a power outlet, the chip turns on mains power. During this time, the battery is charged if necessary. Moreover, the battery has the same microcircuit for controlling charge and discharge.

This chip is called the BMS battery controller. It is responsible for the process of charging and discharging the battery. When the battery is installed in the laptop and needs to be charged, the BMS board allows access to the lithium cells that make up the battery and they are charged. At the same time, the board controls voltage, temperature, and sometimes even pressure inside the elements. As soon as the parameters are out of range, the BMS controller disconnects the battery from the outside world. This helps to prevent overheating and ignition of lithium-ion batteries.

Laptop and power adapter

The same thing happens during the operation of the laptop from the battery, that is, when it is discharged. The controller board monitors the voltage of the lithium cells and, when it drops to a certain value, turns off the battery. This prevents deep discharge of the battery. And for this it is not at all necessary to turn on the laptop without a battery. All of the above processes occur in normal mode, that is, with a battery connected to the laptop.

In addition, the microcircuit that controls the power on the laptop motherboard automatically switches to mains power mode when the adapter is connected. That is, the battery is excluded from the power supply. If you unplug the adapter, the chip switches to battery mode. It turns out that the laptop battery acts as an uninterruptible power supply for it. Thus, in the event of a power outage, you can continue to work from the battery. This is another argument against running a laptop without a battery.

Laptop battery compartment

So, can you use a laptop without a battery? Yes, definitely. But is it necessary? After all, if you use a laptop without a battery, you have to buy an uninterruptible power supply for it. Then, when the power goes out, you can save all user files and shut down correctly. But, think about why you need additional expenses. Also, if you work on a laptop without a battery, it does not mean that you will save the battery. Lithium batteries degrade even when stored. Even when the battery is idle, lithium is destroyed.

Apparently, the myth about saving the battery, if you turn on the laptop without a battery, has gone since the days of alkaline batteries. When laptops first appeared on the market, Ni-Cd and Ni-MH cells were used in their batteries. As you know, this type of battery has such a drawback as the "memory effect". This problem lies in the fact that when a nickel-cadmium or nickel-metal hydride battery is not completely discharged, a double electrical layer occurs.

Connecting the power adapter to a laptop

This causes the battery to lose some of its capacity. In this case, the voltage drops slightly, which is perceived as a discharge of the battery. As a result, the battery starts to charge again and the problem gets worse. Therefore, with such a battery, it was reasonable to work from the network without it. In addition, with alkaline batteries, it was necessary to periodically conduct training, which consisted in the full discharge and charge of the cells.

But now this type of battery is not used in laptops. Their place was taken by lithium-ion and lithium-polymer batteries, which do not have a “memory effect”. Therefore, I consider it pointless to remove the battery from the laptop.

You might be interested in the article on how to charge a laptop without charging. Back to content

How to turn on a laptop without a battery?

If you are still not convinced by the reasoning above, let's figure out how to turn on a laptop without a battery. To do this, do the following:

turn off the laptop if it was turned on. At the same time, make sure that the laptop just turned off, and did not go into sleep mode. That is, the operating system must shut down gracefully;
disconnect the power adapter from the laptop, if it was connected;
then turn the laptop over and remove the battery. On most modern laptops, the battery case is fixed with special latches. In most cases, one fixes after inserting the battery, and the second acts as a latch. These latches are located on the bottom of the laptop. There are laptop models on which the battery is fixed with screws;
then connect the power adapter to the laptop;
plug the adapter into a power outlet and turn on the laptop.

Do not forget that with this connection of the laptop, you need to work from the network through the UPS. Otherwise, you will lose all unsaved data in the event of a power outage. Now that you know how to turn on a laptop without a battery, let's talk about the problems with this connection. In addition, you can read about laptop battery calibration programs. Back to content

If the laptop does not turn on without a battery

It is possible that your laptop does not turn on from the battery. Let's look at the main reasons for this:

non-working power adapter. Everything is simple here. You need to replace the faulty adapter and connect the laptop;
The laptop power supply is not designed for this. This is probably the worst option. That is, the laptop is powered only through the battery and nothing else. This can only happen on cheap Chinese fakes;
laptop motherboard failure. The power management chip on the laptop motherboard is not functioning properly. With this problem, you already need to contact the service center.

That's all the reasons why the laptop does not turn on without a battery. If you have comments and additions to the article, write them in the comments. Additionally, you can read about how to turn on the phone without a battery. Vote in the poll below and rate the material! If you liked the article, add it to social bookmarks! Back to content

Take part in the survey!

Reasons why the laptop does not turn on from the mains without a battery and how to fix it

To understand why the laptop does not work from the mains without a battery, you should find out some technical points about providing power to the laptop from various sources. Next, we will consider why the internal source is turned off when the computer switches to power from the adapter, why this is done and what malfunctions lead to the fact that the device does not turn on without a battery.

How a laptop chooses a power source

Any modern laptop, unless, of course, it is a nameless Chinese product, provides for two power consumption schemes - that's why it works both from the mains and from the battery. For this, the laptop is equipped with special chips:

On the motherboard, which, when the adapter is connected to the power connector of the device, switches the laptop to power from an external source. During this time, the battery is charged as needed. When the external source is turned off, it also includes a battery in the circuit, as a result of which the device already works from an internal power source.
The controller on the power supply itself, responsible for managing the charge and discharge of the device. This microcircuit, if charging is necessary, opens the access of energy to the lithium batteries of the battery, then blocking it when fully charged or when the temperature rises critically. Sometimes even the pressure of the charged elements is controlled.

In a word, the only reason why it may be necessary to remove the battery from the laptop is a malfunction of the latter or a controller that regulates the process of charging and discharging it.

Popular misconceptions about extending battery life

Common theories about extending the life of the internal power supply if it is removed from the laptop are unfounded due to the described design of the mobile computer. If necessary, the microcircuit itself disconnects the battery from the network.

Therefore, in order not to increase the number of charge and discharge cycles (this is really a limited value - after 500 cycles, about 20% of the capacity is lost), just connect the power adapter. The battery in this case works as an uninterruptible power supply (UPS). If the battery is removed, the uninterruptible power supply will have to be purchased separately.

How to safely connect an adapter without a battery

Here are step-by-step instructions with which the user can correctly and safely connect the laptop to the mains without a battery.

Is it possible to use a laptop without a battery on mains power?

To understand the reasons why a laptop battery does not need any kind of exercise at all, let's dive into history a bit. Until recently, portable devices were powered by nickel cadmium (NiCd) and nickel metal hydride (Ni-MH) batteries. Now such batteries are not used in laptops due to a number of shortcomings: they take a very long time to charge, when charging, and sometimes even when used, they heat up quite a lot, have a relatively small resource of charge-discharge cycles, and are environmentally unsafe.

Achilles' heel of any nickel batteries, crossing out all the advantages, there was and remains the so-called "Memory Effect", which is just on everyone's lips. The memory effect occurs when the battery is charged before it is completely discharged.

A bit of physics: In the electrochemical system of a nickel battery, when the battery is not completely discharged, an “extra” double electric layer appears, which, as it were, “tear off” a piece of its capacity equal to the underdischarge value and its voltage decreases by 0.1 Volt. This "biting" is called memory effect. If each time you slightly underdischarge a nickel battery, start charging it - each time its capacity decreases.

Primitive cheap chargers understood this drop in voltage as a drain on the battery and reported that the battery was "bad". In reality, however, there was no reduction in energy consumption, and a good charger could provide full use of the capacity of the nickel battery. However, in most cases, the charger forced the user to perform more and more charge cycles. And this led to the fact that the user, with his own hands, with the best of intentions, quickly "killed" the battery.

Oddly enough, one or more cycles of deep discharge and subsequent full charge of the nickel battery(People call it battery training) could almost completely restore its original capacity.

That's where it came from myth that on a new laptop, you must first perform a full charge-discharge of the battery several times, and only then start using it. But believe me, these are all speculations of people who trust the information received from the words and did not delve into the essence of the issue properly! The fact is that in modern portable devices, be it a laptop, netbook, tablet or even a smartphone, Li-ion(Li-ion) batteries, and the operating conditions of these batteries are almost completely opposite to nickel ones. Therefore, lithium batteries are not only unnecessary, but even harmful to train!

Lithium batteries are absolutely devoid of such a disadvantage as the “memory effect”, in principle they can be charged and discharged at any time, and this is their main advantage, for which engineers have fought for decades. But lithium batteries have other disadvantages. Lithium batteries should not be completely discharged, and even more so should never be stored in a discharged state. In addition, a lithium-ion battery is afraid of frost, its capacity drops noticeably after use or storage at sub-zero temperatures.

The ideal conditions for short-term storage of a lithium-ion battery is 40% charge. It's okay if you keep the battery fully charged, but just keep in mind one more little nuance that few sellers, and even techies, know about - this is the aging effect of the lithium battery. Why do you think laptop manufacturers don't give warranties longer than two years? The answer lies in the battery. Even if new lithium battery fully charge and store the laptop without using it (so that it allegedly does not wear out) - it getting old, and after a couple of years due to aging effect it will lose two-thirds of its original capacity, and this process is unfortunately irreversible. I do not argue that there are exceptions in nature. I met laptops that held an hour of charging even after 7 years of use. But this, as they say, as someone is lucky. It all depends on the quality of a particular battery instance, and, unfortunately, this process cannot be controlled in any way. Conclusion - a lithium battery for the most part loses its capacity, regardless of whether you use it or not.

And the fact that some say: "Remove the battery and it will not wear out" - this is the second myth dispelled in this article. Do not remove the laptop battery, on the contrary, the laptop battery works as an uninterruptible power supply. And in case of power outages, which is still not uncommon, it will help you save data in a laptop, and sometimes protect electronic components as well as its electronic circuits. For those who are going to buy a new battery to replace an old, worn out one, I recommend finding out the exact production date of the new battery, since no one will tell you how long it could be stored in warehouses, under what conditions, and how much its capacity has decreased?

This could be the end of the article, if there was one more important “trifle” that I missed at the beginning. Many readers of the “Computer from scratch!” blog, who have budget portable devices, turned to me with a problem: “it seems that they used the battery as described in this article, but after just a year it still fizzled out.” What was the reason? Bad battery? Not always.

One of the important parameters for using a lithium-ion battery is the temperature at which it is operated. Lithium-ion batteries are afraid of overheating. The ideal temperature at which a lithium-ion battery will last as long as possible is only +5 degrees Celsius. When the laptop is running, heat is generated (often quite a lot of heat), which, spreading through the components of the laptop, naturally heats up the battery, sometimes up to 60, 70 degrees Celsius! As a rule, this happens when a load is given to the laptop, for example, during games. Some "advisers" advise you to remove the laptop battery for the duration of the games, and put it, supposedly "for preservation", in the refrigerator, having previously wrapped it in a plastic bag - complete nonsense! Taking a cold battery out of the refrigerator, into a warm room, and then installing it in a laptop, you can “kill” it many times faster due to moisture condensation and sudden temperature changes.

"What's the way out?" - you ask. A cheap laptop, and therefore cheap, because the manufacturer saved on everything he could and how he could, including on the heat removal system. The task of the manufacturer in this case is for you to quickly buy a new laptop from him, eventually laying out the amount that he wants to receive from you. That's why the battery gets hot. In expensive and special gaming laptop models (which are also expensive), the cooling system, on the contrary, is given due attention. Cheap laptops are not designed to run too resource-intensive applications and games. And their relatively decent characteristics are just an advertising race of competing manufacturers, and ensuring comfortable work in standard applications. In fact, many users buy a budget laptop, and then try to "squeeze" everything imaginable and unthinkable out of it. Others even try to disperse ...

To summarize...

You should not "train" the battery of a laptop, phone or tablet before using it;

Don't remove the laptop battery - it gets old anyway;

Do not store the battery in the refrigerator;

Choose a laptop designed for the tasks you plan to perform on it;

Do not overclock your laptop, and do not demand the impossible for little money;

How can you turn on a laptop without a battery?

Master's response:

The battery is a rather vulnerable element of a portable computer. In order to prolong battery life, it is recommended not to use this device unless absolutely necessary.

If you always use your laptop only at home, it is recommended to remove the battery. This action allows you not to consume the power resource. The thing is that each battery is designed for a certain number of discharge and charge cycles. The more you use the battery, the faster it will wear out.

Turn off your mobile computer. Be sure to make sure that the operating system has completely completed its work. Some laptop models, after pressing the "Power" button, switch the OS to hibernation mode, and not turn it off.

Disconnect the power cable from your mobile computer. Under no circumstances should the battery be removed while the laptop is plugged in.

Turn over your laptop. Do not place the computer cover on a hard surface. Carefully study the type of battery mount. The new models mainly use latches that can be easily pushed back with your fingers. Perform this action. Remove the battery from the case.

Compared to older laptops, the battery will most likely be in a separate tray. In order to remove it, you only need to unscrew a few screws.

Connect the power supply to your laptop, and then connect the adapter to the mains. You must always perform this procedure in the order shown. This is especially important when operating without a battery.

After all the steps taken, you can start using your PC. It should not be forgotten that the laptop battery performs the function of a voltage stabilizer. You need to purchase an uninterruptible power supply. You must connect your laptop only through this equipment.

This method will prevent damage to laptop controllers during sudden power surges. In addition, if your electricity is suddenly turned off, you can correctly shut down the operating system, as well as programs.

The laptop battery is a very important part of a computer. Even if this battery is not really needed. For example, when using a laptop at home or office, where there is always access to a 220V electrical network. It would seem that if you constantly use 220V, and set all the power supply parameters of the laptop, then why continue to monitor the battery charge? After all, everything will happen automatically, as it was described in the article "".

To some extent, users who argue in this way are right. But not quite... The fact is that due to the importance of the battery as a laptop device, laptop battery power control does not stop even when the laptop is unloaded and turned off. Why is this done? To charge the battery even if the computer is completely turned off.

Notebook manufacturers believe that if the user forgot to charge the battery, then this should be done automatically, regardless of whether the computer is turned on or the operating system is loaded. The main thing is that the charger is connected, and it, in turn, would be connected to the 220V network.

And all is well, it would seem. We turn off the laptop when we finish working with it. At the same time, do not disconnect the charger from the 220V network. Accordingly, automatically the battery will be charged to 100%, 80% or 50% depending on how it is determined by the laptop's dedicated power management software. Good? Great, but...

But after charging the battery to the maximum level (100%, 80%, 50%), the charger will not disconnect from 220V. To turn it off, you need a person, a user, his human hands. Self-disconnecting chargers are not yet produced (it is something reminiscent of the self-closing trousers mentioned in the works of the Strugatsky brothers)!

So what? Yes, after a while the laptop battery will be somewhat discharged. By her own. Why? Because any battery has a so-called self-discharge current. Like it or not, any battery is gradually discharged, even if it does not give electricity to the outside. And as soon as the charge drops by at least half a percent, the battery charge system will automatically connect the charger. The battery will start charging again up to its limit (100%, 80%, 50%).

And so many, many times. Automatically. Without human intervention. The battery will automatically charge to the maximum level. Then it will automatically discharge (self-discharge) to a level slightly less than the maximum. And it will charge automatically again. And so an infinite number of times, until the charger is disconnected from the 220V network.

The described mode of constant recharging of the battery to the maximum level and subsequent small self-discharge is very unfavorable for the battery. Especially if you determine that the maximum battery level is 100%. Constantly recharging the battery to 100% from just below 100% will destroy the battery very quickly. This can shorten the battery life several times.

Therefore, laptop users need to personally monitor the battery level, despite the presence of automation of this process. Apparently, laptop developers have not fully taken into account all the features of battery operation, or have not yet come up with algorithms that allow this to be done in the “correct” way. Therefore, it remains to finish it with their own "handles".

How it's done? Before turning off the laptop, you need to look at the status of the battery indicator. If the indicator shows the maximum charge level (100%, 80%, 50% depending on the settings), or this level is close to these values, differing from the maximum by no more than 1-2%, then immediately after turning off the laptop, you MUST disconnect the laptop charger from the 220V network. Necessarily!

If the displayed battery level is much lower than the maximum (and at the same time you are sure that your battery is in good condition and capable of charging to the maximum level), then after turning off the laptop, you can not immediately disconnect the charger from 220V. But this shutdown MUST be done immediately after the battery indicator goes out. This indicator will be on even when the PC is turned off, it will turn off only after the battery is charged to the maximum level.

If the laptop is in the office, and the user must leave it after turning off the laptop, then it is almost always necessary to disconnect the charger from 220V. Almost always. Only in one case it is possible and necessary to leave the charger switched on at 220V if the battery charge level was close to zero before turning off the laptop. Because you can not leave the battery in a completely discharged state for a long time! It is much worse to keep the battery at zero or near zero charge for a long time than to constantly recharge the battery to 100%. That is, we choose the best of the 2 worst options! Well, if there is an intelligent security guard (or duty officer) in the office, then ask him (or her) to disconnect the charger from the 220V network after the battery charge light of your laptop goes out.

So, before turning off the laptop, we make sure that the charge level is close to the maximum, and then we disconnect the charger from the 220V network immediately after turning off the laptop. But if, on the contrary, we make sure that the charge level is close to the minimum (0% -10%), then after turning off the laptop, we connect it to the charger (if it was not previously connected to it), and we connect the charger to the 220V network (if previously it was not connected to the mains). And wait (stubbornly) until the battery indicator goes out. After that, we still disconnect the charger from the 220V network. Ultimately, the charger must be disconnected from the mains.

A laptop turned off and left unattended should not be connected to a 220V charger. Should not!

Summing up

Manual control of the laptop power supply, which we do even if there are power management automation tools built into the laptop, consists in monitoring the battery charge level before turning off the laptop.

Remember that after turning off the laptop, you should not leave the laptop connected to the charger (plugged into the 220V network), if the battery had almost the maximum charge level before turning off the laptop.

And remember that after turning off the laptop, you need to connect the laptop to a charger (plugged into the 220V network), if the battery had almost a minimum charge level before turning off the laptop. With the subsequent obligatory disconnection of the charger from 220V at the end of the battery charging.

This is the manual control and manual power management of the laptop.

All of the above applies only to laptops with a good battery. A bad battery behaves unpredictably. When fully charged, it may suddenly lose power. It may not gain the maximum charge level, or quickly self-discharge when turned off, etc. Therefore, the instructions for manually monitoring and managing the power supply of a laptop apply only to happy owners of serviceable batteries.

Does a laptop work without a battery?

Is it possible to forget about the existence of the battery at all? And do not remember about it either when the laptop is on, or when it is off, or when the laptop is turned on, or when it is turned off?

You can, if this battery is removed from the laptop!

Can a laptop run without a battery at all? Yes maybe. Only in this case, the laptop will actually turn into a stationary PC, which can only work from a 220V network.

When removing a working battery, be sure to check its charge level. It is advisable to remove the battery for later long-term storage when its charge level is approximately 50% to 80%. A battery that is completely discharged (0-10%) must not be taken out for storage, otherwise this battery can no longer be used, it will fail during storage. It is also undesirable to remove a fully charged battery (100%), it is better to first discharge it at least to a level of 80%.

A battery stored separately from a laptop should be periodically (at least 1-2 times a year) checked and recharged to 50% -80%. Otherwise, it can be discharged to a critical level, and become unusable in the future.

P.S. Read more about computer literacy:

Get up-to-date articles on computer literacy directly to your inbox.
Already more 3.000 subscribers

Important: You must confirm your subscription! In your mail, open the activation letter and click on the link indicated there. If you don't receive an email, check your Spam folder.

Comments: 76 to “Manual laptop power management”

Hello! Is it normal that when powered (in games), the battery starts to sink by 1-2% percent in a couple of hours? Is this a battery protection or a malfunction?
prnt.sc/po229y

Hello. Games are often very energy intensive. They are better handled by desktop computers. And the laptop may not have enough charger power to provide power. Then the laptop battery will slowly discharge. Or the battery will not charge while the game program is running.
Maybe even the laptop does not have enough power of its own to play the game. Then the more the battery can be discharged even when the charger is connected.

Hello. Notebook MSI GT80, the battery showed 0% charge and the inscription, connected is not charging - it was like this for about a week, after a couple of days the battery turned on / charged to 100% / was discharged and then the same problem started again as at the beginning. What could be the problem and how to solve it?
The laptop has been standing on the table all the time since the moment of purchase, the charging also did not get under way as I bought it, put it on and that's it.

Hello. If you keep the laptop on the table with a constantly connected charger, and never disconnect this charger from 220V, then sooner or later the battery will fail, exhaust its resource and begin to behave unpredictably. You can still not change anything, leave everything as it is (always connecting the laptop to the charger and constantly connecting the charger to 220V), since the battery has already begun to behave unpredictably. When the laptop stops turning on at all - this will happen when the battery becomes completely faulty - you will have to remove the battery from the laptop and work without a battery, only with the help of a charger.
In fact, sooner or later, batteries fail, regardless of how they are used, “correctly” or “incorrectly”. Therefore, there still comes a time when the battery needs to be removed from the laptop for good. And continue to work either from the charger, or install a new battery, if you can buy it for a reasonable price.

I am interested in stationary use of a laptop when the charger is not disconnected from the network for a long time. In this case, the battery is used as an uninterruptible power supply when the network is turned off for a while. Notebook ASUS N 61 VG. This mode has been tested for 2 weeks of continuous operation. In this case, the battery is charged to 100%, then the charger turns off automatically and the power comes from the battery, which is disconnected and not charging. The discharge occurs to a level of 90%, after which the battery is automatically connected to the charger and charged to 100%, after which the process is repeated. The same mode was tested on a Fujitsu laptop for a month. What are the problems here? Is it possible to operate the charger without load?

Yes, that's how it can work. Only when you completely turn off the laptop, you need to disconnect the charger from the 220V network. Before turning on the laptop, you need to reconnect the charger to 220V.

When I read it, it seemed like an article from the late 90s. I was surprised to find that it was only 4 years ago. I wonder what the author has been doing for the last 13 years so that such anachronisms remain in his head?

Criticize all masters! What exactly is wrong with your article in this article?

Good afternoon! I have a question that bothers me a lot. I bought a laptop and from the very first days of its work I noticed such a strange thing: if you do not remove the battery from the laptop at night, then in the morning there is no charge in it at all, even if the battery was 100% charged when the computer was turned off.
The article says that the battery charge may decrease if the laptop seems to “work” from the network at night in the off state. BUT! The problem here is that at night I leave the laptop OFF from the mains (220V), that is, it contains only a battery that is 100% charged. And in the morning the battery is completely discharged! Sometimes even the laptop does not turn on in the morning until I take the battery out of it, then re-insert the battery and plug it into the network! At the same time, I am ABSOLUTELY sure that the laptop is NOT IN SLEEP mode at night, but turned off as expected!
Help me please! I won’t be able to take out the battery forever at night, I’m afraid that over time this plastic mechanism in the laptop itself (where the battery is inserted) will break down and then there will be a FAILURE! :(

Hello. The battery may self-discharge. Then the battery is discharged even when removed from the laptop. And that means it's NOT OK. It needs to be replaced under warranty.
If the battery does not discharge when removed, but discharges when inserted, then the problem is in the laptop. It doesn't turn off completely. You need to watch how the laptop turns off, whether all processes are completed, etc.
Alternatively, you can try the following. It is necessary to complete all tasks on the included laptop and close all windows. Then press and hold the laptop power button until the laptop turns off with a characteristic click. After that, you need to disconnect the laptop from the mains, and leave it overnight with the battery inserted. If the battery does not drain overnight, then the problem is with the laptop.
If this does not help, then you need to charge the battery again with the laptop turned on, turn it off as described above, and leave it overnight with the battery inserted and the connector connecting the charger to the laptop removed. If the battery does not drain overnight, then the charger is the problem and needs to be replaced.

Hello! Thank God, my laptop began to work normally, the following helped: on one site I read that on a Dell laptop (and I just have a Dell) there may be a problem due to the CD / DVD drive. I turned off the drive and the battery stopped discharging at night))) All the same, there was a problem that the laptop did not completely turn off at night, thanks for the hint and detailed answer!)))

Thank you. Nothing helped, the problem seems to be in the power supply. You can't find this laptop model on the manufacturer's website. There was such a question. Need:
AC, Input voltage 100-240V 50 - 60Hz 1.7A Output voltage 19 V current 3.16 A (max)
Probably better to buy a universal block. Found this one:
AC, Power 90 W, Input voltage 100-240V 50 - 60Hz, Output voltage 15 - 24 V Output current 6.8A
Confuses the output voltage and output current of the proposed model. After all, the voltage can fluctuate within 1-2 units, that is, it should be 18-20V. And the output current on the computer is written 3.16 maximum ...

There must be adjustments on the universal device (adapter) to set the required voltage. These adjustments must be set immediately, right at the time of purchase, and exactly to the voltages that should be for your laptop. Again, it's a good idea to check the adapter with the laptop together, whether it will flash in this case, and check it right on the spot when buying the adapter. If there are no adjustments, then do not buy this device.
The maximum current, if it is more than that of the native device, is normal.
In general, "playing with electricity" is a dangerous game. Electricity drives machines, trains and much more. This is a very powerful and dangerous environment. Be careful when setting the required voltages and currents. Do not exceed the ratings, especially for voltage. In terms of current strength, you can make a little margin, it just gives an additional power reserve to the adapter, it will heat up less during operation.
And further. If the battery in the laptop has failed, and the laptop does not work from it at all, then before replacing the adapter, you must, in fact, first deal with the battery. The old adapter can also blink due to the laptop battery. In this case, you need to remove it from the laptop and try to work from the OLD adapter. It is possible that the flashing problems will stop, and then you will not have to replace the adapter.

Hello.
In recent months, the laptop seemed to periodically disconnect from the network, although the green light is on in the adapter (although the adapter itself has been very hot for years during operation). And the other day it just began to blink, five times at once, as if the current would turn off and turn on. What could be the problem?

Hello. Try switching to a different 220V outlet, perhaps the one you are using "sparks". If it does not help, try replacing the power cord from the 220V outlet to the laptop power supply.
If this does not help, then it looks like the laptop charger is faulty. It may be worth replacing it with a similar power and suitable for your laptop.

You can look at the official website of the laptop manufacturer for information about adapters for your model, if needed. First, try the new adapter directly in the store (from the supplier), take your laptop with you and connect it to the new adapter. If the light is on normally, not blinking, then probably it is the replacement of the adapter that helps in this situation.

Tell me, please, what to do. The battery charge of the laptop was discharged to a critical one (it was not connected to the network while working on the NB) and NB, therefore, turned itself off during operation. Later, NB was charged up to 100%, turned on. I want to copy files from n.b. to a smartphone, but nothing happens, there was no such problem before turning it off, everything was copied normally, now it doesn’t.
Thank you.

Toshiba satellite a300 laptop.
The charging indicator flashes continuously.
Overnight charged only one percent.
Already checked the cords for a possible break, everything seems to be fine.
What is the problem?

If you were able to charge the battery by only 1% for the whole night (when the laptop is OFF - this is important for diagnostics in your case!), Then I can assume that the battery of your laptop has served its time. In this case, without waiting until the moment comes when the laptop does not turn on at all (this is the next stage of a complete discharge of the battery!), It is better to remove the battery from the laptop and work on it only from the 220V network, only in stationary mode.
The second option is to buy a new battery, but this is not a cheap option, so you first need to check if the laptop will work without a battery. If it works properly, then you can think about a new battery if the laptop is needed for portable operation.

Hello.
I took out the battery, plugged it into the network. The power icon (electric plug) is no longer blinking.
The charging indicator (battery) does not light up, judging by the fact that there is no battery.
But! As soon as I press the power button, a click and everything goes out.
And when the battery is inserted, both power and charging flash, it works for a minute or two and turns off.

Hello. Some kind of overload on the power supply inside the laptop. Some block (node, board, device) consumes much more electricity than allowed. I need to send my laptop in for repair. There, perhaps, they will immediately see what is “fried”, or by sequentially turning off one device after another, they will find one that takes all the energy.
Of course, it may be that the charger is “fried” and does not produce the required power. Therefore, for some time, the laptop works with the battery due to the battery energy. Therefore, before sending it for repair, you can try to connect another SIMILAR charger. In this case, you CANNOT connect a more powerful charger, as you can "burn" the laptop. If everything works properly from another SIMILAR charger, then the problem was (is) in the charger. If replacing the charger does not help, then it is most likely a power overload - something inside the laptop requires too much electricity to work.

my power supply constantly turns on and off when charging in a laptop, it constantly blinks red and green, when you unplug the cord, the charge indicator disappears. what is the reason??

You need to know the specifics of your laptop. It is possible that a combination of alternating red and green lights means something specific, such as "charging finished, unplug the charger." Or maybe it means "The battery is no longer gaining the required charge, replace the battery", etc.
A description of the laptop indication (what these or those light bulb signals mean) is usually given in the description of the laptop, which is either attached in paper form or is available electronically on your laptop.
Alternatively, you can search for this description on the Internet, for example, on the website of the official laptop manufacturer. In general, you need to read this description, find the section about the indication, and see what this flashing of the lights means.
In absentia, unfortunately, it is impossible to unequivocally answer your question without resorting to the description of your specific laptop model.

For 4 years and 6 months, I disconnected the nubuck (Lenovo G570) from the network twice, for a month each time (vacation). Both times I squandered the battery to zero - I suspect that this is the main reason that the capacity decreased by 20%. I have every reason to expect that the battery will last another year and a half (minimum).
According to the author of the article, by turning off the nubuck from the network, I could increase the battery life “several times”. The question arises - a bunch, how much is it? Similarly, - a few, it's probably more than two ???
That is, we multiply six years of work (at least) by three, - we have 18 years!
Sorry, but the author of the article is a science fiction writer or a storyteller! Batteries don't last that long!
And secondly, a modern laptop will not work without a battery! At least it won't crash!

There is a luck factor. For example, the laptop manufacturer has provided options when the laptop is not disconnected from the network at all, and protected the battery from rapid wear. Here is the result. Not all laptop manufacturers do this.
Again, the battery is different, one lives for a long time under any conditions, while the other is naughty, requires attention and care.
It is very good that the battery of the author of the comment has been working properly for many years without much attention to it from the user. If at the same time it is serviced, it will probably last even longer. As for 18 years, it is difficult to both prove and disprove, the time interval is too long, there is no point in discussing this topic, and there are no such statistics for such a time interval.
For any laptop user, the longer the battery lasts, the better. And for this, all methods are good that extend the life of its impeccable service.
As for the remark that modern laptops no longer work without a battery, it is rightly noted. Increasingly, in their comments, users complain that they cannot even remove (remove) a worn out battery from a laptop, it simply stops turning on at all. This has to be reckoned with, the laptop manufacturer decided so, and the user is powerless to do anything here.
But there are still a lot of laptops that work great without a battery, only from a 220V network. These include the above tips for removing a faulty battery from a laptop.

My laptop is almost 8 years old. Battery deterioration - 15%. True, part of the time she lay separately, but this, I think, is less than half the time. At least the last few months are exactly in it.

To say that it is the connection of charging to the network that kills the battery, it is necessary to exclude other factors (for example, overheating of the battery in the laptop, possibly crooked software, etc.). To do this, you need to conduct research, have some kind of statistics, again, excluding other factors. Or, at least, official recommendations from manufacturers. At least one of the manufacturers recommends immediately disconnecting the laptop from the network?

According to your logic, it is generally better to work less with a laptop, because the battery is also recharged when it is turned on.

Your quote:
“And as soon as the charge drops even by half a percent to a percent, the battery charge system will automatically connect the charger.”
Where does infa come from that charging the battery will start immediately, as soon as the charge drops by half a percent or a percent? Are you talking about all laptop models, most models, or a specific one?

And yet, an important question is the time it takes for self-discharge to the threshold from which charging begins. It is on this parameter that it depends whether it makes sense to follow your advice to constantly disconnect charging from the network. If this time is really short, then in order to save the battery, you only need to pull it out of the laptop, because. it also charges during operation, and if it works most of the day, for example, then turning off the charging from the network during breaks will not play a significant role.

Firstly, there is a specific value of the battery charge, after which it starts to recharge. For example, on my laptop it is 95%. Up to this value, it will self-discharge for a long time, several days for sure. If I leave the laptop plugged in overnight, it will not affect the battery in any way, because. Overnight, it still will not be discharged by 5%.

Under these conditions, it makes no sense to constantly disconnect charging from the network, because. anyway, in a few hours it will not be discharged to that value (5%), after which it will start charging. It makes sense to unplug it from the outlet only if you do not turn it on for several days.

I don’t know, maybe other laptops have different conditions for starting a charge (for example, when discharging up to 99%), but in the conditions described above, I definitely don’t see the point of constantly disconnecting charging from the network.

I'm wondering if you have anything to say to that.

In this dispute, if we call it a dispute, only time can judge us. If you do not disconnect your laptop from the 220V network, and at the same time its battery will retain its properties for several years, then in your case you are lucky. It is possible that the manufacturer of your laptop model has developed a special battery monitoring program in order to extend its life.

Many are unlucky. It might be completely different. Namely, leaving the laptop turned off for a long time connected to the 220V network disables the laptop battery much earlier than its due time.

Epic bullshit. Apparently the purpose of the article is to collect more comments and colloquial phrases, thereby climbing higher in the search results. SEO for housewives.

hello! the place where the charger is connected does not work for me, the experts said that the board burned out, I don’t remember what it’s called, and I wanted to ask if it’s possible to remove that board at all and connect the charger to the laptop directly to use it as a desktop computer

Hello. To directly connect the power supply without using a standard connector, you need to do soldering, you need to solder the wires. But in computers, so-called multilayer printed circuit boards are used, to which it is impossible to solder anything at home. Any such attempt will result in even more damage than you already have. Therefore, it is better to abandon this idea, especially since the invited experts confirmed the impossibility of such actions.
It is possible to repair such breakdowns only in specialized service centers, where most likely they will not solder anything, but will replace completely damaged computer blocks. If these blocks are not available, they can be ordered from the manufacturer.

Hello. There is such a utility that, when working with incl. computer from the network, reaching a level of 98%, will turn off the power from the network, and when it goes lower, say 30%, connect it back? Or is it possible to somehow configure it without a utility?
Thanks in advance for your reply

Hello. In some laptop models, their manufacturers install special utilities for additional power management. For example, Sony suggests setting the battery management so that it does not charge more than 50% (for those who constantly use only the charger) or 80% (for those who often use the battery “on the road”).
But not all laptop manufacturers make such utilities. Universal, suitable for any models of laptops, such utilities are unknown to me.
The described utilities DO NOT control the low charge (discharge) of the battery. This is done by the standard Windows “Power Options” utility, where you can set any level of “Low Battery”. If you want to set 30% - please, and then when this threshold is reached, the standard “Power Options” utility in Windows will signal this to you. For obvious reasons, this utility will not limit the discharge, since it is not clear where to get energy from to continue working if the power at that moment is supplied from the battery.
Learn more about automatic laptop power management:

Thus, the low battery level can be controlled (only controlled, but not limited) using the standard Power Options utility (from the Control Panel). And the upper battery level can be limited (namely, limited, and not just controlled!) Using a special utility from the laptop manufacturer, provided that the laptop manufacturer has created such a utility and included it in your laptop software.

I'm understood, thank you.
Now about the operation of your native battery. I'd like to watch it drain as it runs (no mains). On my laptop (Acer) there is no such built-in, I googled - there are a great many such programs for this ...
Any advice on which is the best to use?

You probably have a non-native operating system that is not native to your laptop. Because in all native systems for laptops, programs for monitoring the state of the battery are necessarily provided. But in stationary PCs, as a rule, there is no such control, since they do not have batteries, the condition of which is useful to monitor.
In the absence of such a program, you can use the built-in battery alarm, which is usually found in laptops.
The battery charge lamp is off or green - the battery is 100% charged, the charger can be disconnected to switch to battery operation.
The light is yellow or red - the battery is being charged from the charger, it is not yet charged to 100%.
The light flashes yellow or red - the battery is almost empty, it should be connected to the charger as soon as possible. The last option (light flashing) may not work if a non-native operating system is installed.
I always use only the battery monitoring program offered by the laptop manufacturer. And there are so many third-party programs, and here I can only advise you to enter the name of any of them into the search engine at the same time as the word “reviews”, and choose a program according to the number of positive reviews about its work from other users, that is, at your own discretion.

Hope, with the starter battery, you can also connect a significantly lower load, for example, a 12 V incandescent lamp. The current consumed from the battery in the first approximation depends on the applied load, so you should not be afraid that the laptop will start to consume a huge current. Of course, the current drawn will depend on the volume of the audio playback. Have there been confirmed cases of negative results?

Alexander, whose laptops have already burned down, they cannot write about it :) where can the statistics be from ?! (This statistic is unknown to me). In the days of calculators and the shortage of “finger” batteries, they (calculators) were connected to large round batteries, and everything worked. If soldered correctly, nothing will be confused. Probably, a laptop can also be “powered” from a car battery. I do not recommend this, but you can try at your own peril and risk, of course.

I had previously read a comment dated 03/15/15, where starter batteries were briefly mentioned.
But due to circumstances, this issue had to be resolved. There is a battery from X Digital SP 12-3.6
The laptop is a used Acer. Battery power is assumed in the absence of a 220 V network, charging is autonomous, from its own charger.
What do you say, do not ruin the computer?

Hello. If the laptop is supposed to be powered by a car (or similar) battery, then you need to have a laptop charger that connects to the car's on-board network. Without this device, attempts to “manually” connect a laptop directly to a car (or similar) battery can ruin both the laptop and this external battery.
Automotive (and similar) batteries are designed to power car starters to start car engines, which, under load, consume “crazy” current, hundreds of amps. With such capacities that car (and similar) batteries can produce, it’s better not to joke, you can burn everything, especially a laptop.

Hello, maybe you know of any reasons due to which, after the battery charge drops to about 40-45%, the cooling fan starts to work at full power with a lot of noise, respectively?

Loud noise is usually due to accumulated dust inside the laptop. It is possible that when the battery charge decreases, additional heating comes from it, due to which it all starts. You need to start by cleaning the laptop from dust (on your own, but very carefully or by contacting a service center).

Good afternoon, I have a question, can the asus x550c laptop work directly from the network without acb, it completely died for me, I took it out and the laptop does not want to start from the network through the power supply, what's the problem?

Hello.
And what is the situation when the laptop does not want to start from the network through the charger? Is the charger correct? Is the charger connector okay?
It happens that the CMOS battery fails at the same time as the battery. In this case, the laptop may not start immediately, but only after some time after connecting it to the charger, for example, after half an hour. In this case, the laptop may forget the current date and current time, and sometimes other settings, so that after turning it on, you may need to manually restore these settings in the BIOS.
Try connecting the laptop to the charger and to 220V, NOT turning on the laptop. And, for example, after 1 hour, try to turn it on.

Hello, this is the trouble I bought a laptop 2 months ago, it worked fine, but now it says it’s connected, it’s not charging 1% of the charge. It works for a couple of hours and turns off. The asus laptop has a built-in battery, the unit is normal checked. Can you tell me what to do? Or take it to the store under warranty? Or how to make it work from the network like a PC?

Try charging the battery with the charger while the laptop is off. Up to 100% charge. If this helps, then the problem is probably overloading the laptop with tasks (like powerful games), so that there is not enough power from the charger to keep it running and to charge the battery at the same time. Then reduce the load on the laptop.

If that doesn't help, then:
If the laptop is connected to the charger, and the charger is connected to 220V (and the indicator light on the charger is on, if any), but the battery is not charging, then the laptop must be repaired under warranty. There can be many reasons for such malfunctions, it is necessary to understand specialists.
If the charger is connected to 220V, but the signal lamp does not light up, if it is (that is, if the charger does not work), then again you need to apply for a guarantee, but you only need to provide a charger there (probably you will be replaced ). You write that you checked the charger, then perhaps this is not your case.

Doing nothing, not contacting the service, is bad. Since a long stay of a laptop battery in a discharged state only worsens its further condition.

Finally, as an option, you can remove the battery (if it is structurally possible), and work from a 220V network through a charger. If the laptop in this form suits you, then you can go this way. Although, if the warranty is preserved, then it is better to repair the laptop than to continue using it in a limited version of the power supply only from the 220V network.

Good afternoon. I have such a problem with the asus k55vj laptop, it does not turn on. They thought the power connector was broken, they changed it, but the problem remained. I pulled out the motherboard and connected the battery from another laptop, the laptop turned on, the network shows that the battery is charging, if you remove the battery and leave the network, the laptop turns off. And if you connect the battery from asus k55vj to another motherboard, then everything works too. What could be the reason that the laptop does not work from the network and with its own battery?

Hello. The question is not clear. What does "pull out the motherboard" mean? What is meant by the term "battery" - is it a CMOS battery on the motherboard, or a laptop battery? If the laptop does not work due to the CMOS battery, then you need to replace it. There is no point in looking for a reason and trying to figure out why everything works from one CMOS battery, but does not work from another. You just need to replace it.

hello. I disassembled the computer, and to the removed motherboard I substituted a battery from another laptop, I turn on the laptop - it works. I connect the power supply, it starts to charge the battery. If you disconnect the battery and leave the network connected to power, the laptop turns off. I thought that the problem was with the native power supply battery, but the battery works on another disassembled laptop. There may be a problem with the laptop's power controller, but why is the laptop running on a different battery. Why does the computer not work directly from the mains? Or somehow the polarity on the laptop has changed?

If the laptop is operated with a CMOS battery connected to it, and when this battery is disconnected, the laptop turns off (as in your case), then such a laptop cannot be operated without a CMOS battery. Leave the battery (from another computer, I understand) in place, assemble the laptop, and work on it.

To your question why everything works the same without problems on another laptop, the answer is simple: because it's a different laptop. One laptop may have one, another laptop may have another. Notebooks do not have to be identical, even if they are of the same brand and model. And even if they have the same details. Because these parts (boards, microcircuits, devices) are only the same in appearance, but “inside” they can differ both in software and hardware.

Try to assemble 1 working laptop from 2 laptops. Or even 2 working laptops, rearranging CMOS batteries from one to another, mutually changing them. As far as I understand, that's exactly what you do. A broken laptop starts running on battery power from the second working laptop, so you can fix it. And the second serviceable laptop works without problems at all without a battery, or from the battery of the first broken laptop. That's all. The question "why so?" has no intelligible answer, except: “because!”.

Hello, Nadezhda Something incredible happens with my laptop: it starts to load, then it looks for problems, then some stripes all over the screen, then it reboots itself and turns off and that's it. Does it mean it's broken? Should I take it to the repair shop or to the trash?

Hello Irina. Troubleshooting most often occurs if an error has occurred in Windows. Stripes on the screen may indicate that the laptop is trying to adjust the video card driver. Rebooting may mean that the laptop needs to be restarted to continue the setup. And the fact that it turns off may, for example, mean that the laptop has overheated. In general, some bouquet of problems turns out.
It's best to try and send it in for repair. Most often, the price is indicated after the diagnosis. Diagnostics is also not free, but diagnostic prices are usually acceptable.

Thanks a lot. But the laptop was bought from the hands and I do not know how it was operated. I already had the same laptop and also bought it from my hands, its battery died, but it worked from the network, but for some reason this one does not work. I understand that buying from hand is dangerous, but I can’t buy a new one. So I wanted to know what should be done in the settings. And this laptop also works when charging 80 percent, but it constantly blinks as if the charge is about to run out Thank you

Thanks for the answer, it means that if the battery dies, then the laptop should be thrown away, since it does not work like a PC without a battery, although where the charging cord is inserted, does it glow blue when the battery is removed and plugged in? Thanks

Each laptop has its own design features. If the light is on, it doesn't mean anything. For example, you may need to adjust the power settings in your laptop's BIOS so that it runs on a charger without a battery. There may be other features as well. There may be some switches, etc. Although, in theory, the laptop should work without a battery.
Also, you do not need to worry in advance that the battery will fail. Why should it break if it is properly maintained ?! The battery is more likely to fail if removed and stored separately from the computer. For this, you also need to follow certain rules. For example, a battery should be stored half-discharged, not fully charged or fully discharged.

Please tell me I can't set up my laptop to run on mains only without a battery. How to do it? I take out the battery, turn it on and the laptop does not turn on. Why7

If the laptop was not working before the battery was removed, then the problem with the laptop may not be in the battery. For example, the laptop's power button may be damaged. That's why the laptop won't turn on. Or there may be another reason for the malfunction that is not related to the laptop battery.
If the laptop worked with the battery inserted, and stopped working with the battery removed, then this means that it is not designed for this mode of operation. Replace the battery.

Thank you very much for the answer! I was so worried about my laptop, knowing that I had killed the battery (But, for example, I’m not special in Bios, and I won’t be able to set up these 80%, then the charge will charge up to 100%, but where does it go next if you don’t turn it off from the mains? does it also damage the battery?

Taisiya, when the battery is charged to 100%, its charge stops automatically. There is no need to manually monitor this. If the laptop allows you to set the maximum charge at the level of 50% -80%, then the battery charge will automatically stop at the set level of 50% -80%. The battery charged to the maximum level (50%, 80%, 100%) is disconnected from the laptop and does not participate in the laptop's power supply.
Since the battery has the feature of self-discharging (gradual discharge by itself), but after a while the battery will be discharged to a level below the maximum. In this case, it is automatically connected to the charger again and recharged to the maximum level.
The older the battery, the more damaged it is, the faster it self-discharges. The more often it recharges again. And that makes it go down even faster. That is, the worse the battery, the faster it gets even worse. Therefore, it is important from the very beginning, while the battery is still in good condition, to properly monitor the use of the battery. This is the guarantee of its long-term uninterrupted operation.

tell me, how then to use the battery in the laptop: turn on the laptop, connect to the network through charging, charge up to 50-80% and disconnect from the network, work until it is discharged to 5-10% and reconnect to the network? Or, after turning on the laptop and connecting to the network, how will it charge - do not remove the charger from the network, let it charge until the end of work and disconnect from the network only after the laptop is turned off? I'm sorry, but I'm clueless...

Taisiya, when you turn on the laptop, it should be connected to the 220V network through a charger. And continue to work with a permanently connected charger. After turning off the laptop, you must also disconnect the charger from 220V. Here are the simplest rules. I repeat, before turning on the laptop, we connect to 220V. After turning off the laptop - disconnect from 220V. And that's it, there are no more secrets!
As for charging up to 80%, no more - this can only be done in software and hardware (through the BIOS settings or through the settings of the special software included with the laptop, if there is such a possibility at all - not all laptops can be configured so that the battery does not charged higher than 50% -80%, alas), but not manually. Do not try to do this manually: monitor the charge, turn off the charger in time, etc. You can't do it manually!

You took as a sample a battery of such a model, in which the battery is not removed at all. My mother has this laptop. The battery is dead and doesn't last long. I would like such a gadget that would control the battery .. when the self-discharge mark of 30-40% was reached, recharging would be turned on. You have to work all the time from the network, and if you go on the road and the laptop dies, it will be bad .. I would like to save the battery as much as possible ..

For "semi-dead" batteries, it may be advisable to set the low battery level and the near-dead battery level to values at which the battery is still "live". For example, 40% and 50%. Then, at 50% of the battery charge, the laptop will signal that the charge will end soon, and at 40% the laptop will automatically turn off (with saving data, for example, using hibernation mode).
Such an alarm and such an automatic shutdown of the laptop will slightly extend the battery life. Laptop batteries and tablet batteries, in principle, should not differ in the principles of operation and in the principles of their management.

Any battery in a laptop fails over time. If you work with a laptop at home, then you can make a desktop computer out of it. You can use this mode for a long time without damage to the device. The most important thing is to properly disconnect the battery, ensuring all storage conditions.

Laptop without battery: is it possible to use

Today, laptops are equipped with lithium cells, which, after 600-700 charge cycles, lose a lot of capacity (about 25%). With frequent use, they fail after a year. Also, lithium cells are very critical to recharge and deep discharge. All this is correct, but why use a gadget without a battery?

In any gadget there is a power supply circuit from a battery or from an outlet, that is, there is a microcircuit on the board that controls the power supply.

If you connect the PSU to the port of the device and insert it into 220 Volts, the microcircuit switches the power supply from the outlet. In this case, if required, the lithium cells are recharged. The battery contains the same board, which is called the BMS controller.

If the batteries are in the laptop and need to be recharged, the controller makes them available for charging. In this case, the board controls the current strength, temperature increase, voltage. When the parameters go beyond the possible maximum, the BMS turns off the battery. This prevents strong heating and equipment failure.

The same thing happens during the autonomous operation of the gadget from batteries, that is, during discharge. The microcircuit controls the voltage and, during a decrease to critical indicators, turns off the device. This does not allow complete discharge and for this it is absolutely not necessary to use a laptop without a battery. All the described actions are performed in the usual mode, namely with the battery installed.

Reference! In addition, the power controller in the laptop itself switches to the power supply mode from the outlet when the adapter is plugged into the network. If you disconnect the adapter, the controller will switch the device to battery power. That is, the battery in the device is the source of power. So, during a power outage, you can continue to use your mobile computer on battery power. This is the main argument against operating the gadget without batteries.

How to turn on a laptop without a battery

If you use a laptop at home, you can get it to save the battery. Moreover, it is forbidden to store lithium cells when fully discharged: the charge must be at the level of 50%. That is, 2-3 times every month, recharging is necessary.

You can use the gadget without a battery after its failure. This will require:

Power off the laptop completely.
Turn the device over and open the battery compartment.
Remove the independent power supply from the case.
Close the compartment, then connect the PSU and power the gadget from the mains. Now it can be turned on and used for its intended purpose.

Features of using a laptop without a battery

Disconnecting the battery may occur for storage does not allow long-term storage of the charge. Capacity decreases over time, although lithium cells fail much more slowly. As a rule, in 2 years it decreases to 15% of capacity. This can be prevented by regularly performing full recharging and discharging. In this case, the battery will last longer.

Working with a device without a battery does not deprive you of any opportunities: you can watch movies, play games, run the required programs. If you take care of purchasing an uninterruptible power supply, then the laptop can be provided with stable operation.