Fast charging: what you need to know about cables and smartphones. How to choose a portable charger

Anyone at least once in his life faced not in time the discharged battery of an urgently needed electronic device, and many of us such a nuisance overtakes regularly.

The way to solve the problem is simple - it is worth only to get a compact external battery, to recharge it in a timely manner and not forget at home, going on business. We offer you a rating of the best external batteries of 2018, compiled by reviews of experts and ordinary buyers. Just do not forget - to choose the best external battery, you need to really appreciate your needs and choose the optimal container device. In the first approximation, its value must be twice as high as the corresponding gadget battery indicator, which is expected to be most often charged.

Capacity external battery - what it means

Pointing for its external batteries passport containers, manufacturers write the truth, but not all. For example, those 13,000 ma · h, declared for the last participant of our review (CANYON CNE-CPB130), its built-in battery really has. Only here to fully charge the smartphone with a battery with a 4,000 mA · h turn out to be only twice. The fact is that under the nominal capacity here is meant a stock of the energy accumulated by the battery of the device during its operating voltage. In this case, it is approximately equal to 3.7 volts, which is noticeably below the value defined by the USB specification. And postolly charge mobile technique It is necessary by means of this interface, the internal voltage is converted to the standard 5 V with a proportional decrease in the available container. In addition, part of the energy is spent on the work of the appropriate electronic circuit. For reference: Currently, lithium-ion (3.6-3.7 V) or lithium-polymer (3.85 V) batteries are used in external batteries, and the efficiency of the transducers is in the range from 0.9 to 0.95.

Thus, knowing the "capacity" of the battery packs and the smartphone, it is easy to calculate how many times you can charge the first device the second. To do this, the passport value of the external battery capacity must be multiplied to the operating voltage of its own battery (if the type is unknown, we take 3.6 V), divided by 5 volts uSB interface, and the result is multiplied by the efficiency (laid by 0.9). As a result, we obtain the useful tank of the device, which can be used when charging.

Completing our example, we have (13000 * 3.7 / 5) * 0.9 \u003d 8658 mAh, which is enough for two complete charges, say, Xiaomi Redmi. 4x with its battery for 4 100 mAh. And a little bit will remain "about the supply."

The memory (charger) charges batteries of your gadgets, providing their energy to work. Any smartphone or tablet uses a factory device, but during the operation of the wires wear out and you have to look for a replacement. How to choose a charger for your phone? To choose, you need to know the most important parameters about which we will tell you in this article.

The main function of charging

In the modern world, these devices have one USB-outlet for interfacing with the appropriate technique. Pole have the power of the output current, which is customary to measure in amperes (a):

for phones, these values \u200b\u200bare unlikely to be higher than the unit;
for powerful smartphones and tablets - 2.1 A.

More technological multifunctional devices May have two outputs for connecting to different devices.

Important! Note that 2.1 and will only go for those cases when one device is connected. If you decide to recharge two devices at once, then the output will be on one amper.

How to choose a charger for your phone? The main defining factor is the terms of use. Based on them, you can classify the memory of several types.

Network

The DIU feeds from the standard network of 220 volts. The device can be factory or simply to represent an adapter to connect the USB connector. The DIU has a small cost and has no restrictions on the use of resources, it is important only for the presence of a network.

Automotive (AZU)

In this case, your device will feed from the power of the on-board transport network and connect the AZU (car charger) to the cigarette lighter. Most often has the form of a cylinder with the necessary user connectors. This type of instrument can be operated only in cars. It is recommended to buy the users who are driving all the time.

Universal

This equipment looks like uSB cableOne end of which is connected to a PC, laptop, aza, and the second to the connector of your gadget. It has a small cost, but the functionality is limited to the instruments that are at hand.

The universal type should be used, taking into account the input current value, since this parameter directly affects the charging speed. Not all sources are able to provide sufficient current. The same port personal computer has an input current of 500 mA.

Wireless

New stage in technology development. Such devices are working on the basis of the principle of the effects of magnetic induction, directing energy directly to the device. Looks like a gadget as a platform for which your smartphone is placed. The panel itself is charging using a cable through a USB port.

This type of charging is very easy to use, stand out by its security and is able to be operated in any conditions. Unfortunately, long-term charging and a large price tag cannot be called an advantage, and not to each phone this device is suitable.

POWER BANK (battery)

The most common (after the scene) and the popular type. This battery does not depend on external conditions and has a large container, which provides the long operation of your electronic device.

Important! The device contains inside the design electrolyte, which can be dangerous for your health!

You can select two types of PB external batteries:

Lithium-ion. The most common appearance that is available to everyone and has due quality.
Lithium polymer. Practically do not heat and self-discharge. Have smaller dimensions and longer service life. The device laid a polymer metal instead of the usual electrolyte, but such devices are worse than the negative temperature and have a greater value.

Important! The capacity of this equipment is made to measure in Milliamper-hours (mAh). Capacity values \u200b\u200brange from 1000 to 70,000 mAh.

To find out how to choose a charger for a tablet or phone, you need to be guided by the following principles:

The storage capacity must be higher than the battery capacity mobile device by 20-30%.
If the phone has a battery for 2000 mAh, the PB must be at least 2500 mAh.

Important! For the competent PB selection, you can focus on this data:
For the owners of smartphones, a device is suitable for 5000 mAh.
For photographers, you will need PB with 4000 mAh and more.
For laptops and other powerful devices, it will be necessary somewhere 10000 mAh - minimum.

Output connection

This criterion affects the compatibility of the recharging device with any gadget. When you gain equipment, make sure that you have a Micro or Mini-USB connector, or the Lightning connector. The number of outputs varies from one to four - the best solution will purchase a device with two conclusions.

Important! Also do not forget that in those connectors that are proprietary, it will not be possible to connect the device to another manufacturer.

Adapter

Another interesting nuance is an adapter for the memory. Included there are adapters for the cigarette lighter, network adapter And other devices. It is the adapter that is able to turn one type of memory to another. This "primer" is useful for recharging a portable memory if it unexpectedly discharged.

Cables

You can classify the wires by two types:

Direct - the cheapest, simple and widespread option.
Twisted. Such a wire twists in the spring, has a smaller size and more durable.
Roulette. The cable in the form of a roulette, which occupies extremely few space.
Built-in - attached directly to the housing and lies there in a special excavation. It is small and much more convenient than other his analogues, because it is impossible to lose.

Cable length is an individual purchase criterion. It can be 50 centimeters, 100 and even 200. Too large lengths will create inconvenience, as well as too small. For cars, it is best to take devices with a wire length of less than 50 cm.

Battery capacity is one of the most important criteria for choosing a phone. Everyone wants their device to serve for a long time and did not let down in the most responsible moment. However, the battery charge is limited, and even on the most modern smartphones, it ends sooner or later, especially if you are actively surfing on the Internet, use the GPS navigator or play games. In some cases, it is critical that the phone remains enabled, while it is not possible to charge it. For example, if you are on the way or found yourself in an unfamiliar city. In this case, a suddenly discharged phone can cause a panic attack.

To prevent such annoying situations and always be in touch, you should purchase an external battery for your phone. This small portable device will help you charge your battery at any time. When choosing such devices, you should remember several important characteristics.

How to choose a portable charger?

When choosing a portable battery, it is worth considering the following indicators:

Battery capacity
Tok Power
Number of USB connectors
Accessories
Additional features

Battery capacity

One of the most important indicators is the container that Milliamps per hour (mAh) express. If you select the device, you can focus on the external battery superior to its volume the capacity of the charged device, about 2.5-3 times. As a rule, the actual battery volume does not correspond to what is declared by the manufacturer. Therefore, they cannot boast 100% efficiency. Therefore, the battery with a capacity of 5000 mAh will not be able to charge the device with a battery with 2500 mAh. For small devices will go battery with a volume of 5000-10,000 mAh. After studying the volume of the device, you will know how to choose a portable battery for your phone and not guess.

Tok Power

The effectiveness of your portable accumulator depends on the strength of the current. For old phones enough 0.5 A, and for more modern smartphones And tablets - 1 A. It is worth choosing the battery that will suit your phone. But it is desirable, before choosing a portable charger, you should make sure that it has a "quick charging" function.

Number of USB connectors

If the device has two connector, then you can charge two devices simultaneously - your or friend. It is very convenient, for example, if you have been discharged as two important instruments.

Accessories

As a rule, standard PowerBank equipment includes transitional for different types Connectors - MicroUSB, Lighting, Old Apple connector, miniusb. Useful will have a network adapter for PowerBank.

Additional functions

As a rule, all modern external batteries have special indicators that allow you to visually assess the amount of the remaining charge. There are also models with digital LCD indicators.

In order to secure batteries, equipped with systems automatic shutdownwhich protect devices from a sharp electricity jump and short circuit. Some devices have the function of automatic shutdown of the load that help prevent in vain electricity consumption.

Many external batteries have LED lanterns that will not help get lost in the dark. Also, individual devices are equipped with such additional "promotions" of type Wi-Fi, a flash drive and even the heating plates. Before choosing a portable charger for the phone, be sure to rate their list of functions and select those that you most need.

Portable Charger Rating

There are several leaders in the market, which their characteristics exceed the models from other manufacturers. It is about them that we will talk now, and let's try to find out what better an external battery purchase for your device.

CANYON CNE-CPB44 - Best Portable Battery

Taken from the site: shark.sk

Compact, inexpensive and convenient PowerBank, which will save you in a difficult moment. It is so small and easy that it can be hidden in a pants or shirt in his pocket or shirt. The powerful current in 1a allows you to charge the phone with the same efficiency as from the outlet. The battery case is distinguished by strength. Thanks to 4 indicators, you will always know how much charge remains in the device. The device is also equipped with a powerful LED flashlight. Battery capacity is 4400 mAh.

SAMSUNG EB-PN915B

Portable battery from the famous Korean firm. The device boasts an impressive capacity of 11,400 mAh. Current power make up 2a, which allows you to charge any phone as soon as possible. Separately, it is worth noting the possibility of charging at the same time two devices. The battery has a built-in cable 6 centimeters long. The corresponding indicators on the surface of the device indicate the level of charge.

Interesting!

The design for PowerBank has created a SUBGSIL company, which wants to draw attention to the problem of survival of rare animal species, an image of the intake representatives of the fauna applied to the front of the battery.

Interstep PB16800 - the best external phone battery

Taken from the site: reditstudio.ru

This compact battery has an impressive energy supply - 16,800 mAh. This quantity is enough for the longest trip. The oblong design of the device makes it convenient for use. The battery has a powerful built-in flashlight, as well as two USB outputs for connecting to external devices. Current strength in 2 A allows you to charge the device as quickly as possible. The entire battery is enough for 500 charges.

HIPER SLIM3500.

Taken from the site: sidex.ru

This portable battery is distinguished by stylish and elegant design. Thanks to a thin 4.5 mm body, you can carry the device with you in your pocket without unnecessary inconvenience. Battery capacity is 3500 mAh. Current power - 1 A. LED indicator will always keep you up to date on the current charge of the device. Complete with this PowerBank is a USB adapter.

ASUS ZENPOWER ABTU005

Taken from the site: stolica.ru

The battery of this portable battery is enclosed in an aluminum case, according to its size, not exceeding the size of the credit card. The current output rate is 2.4 A, which is comparable to charging from the usual outlet. Charging time will be approximately 2.5 hours. The battery itself has a capacity of 6600 mAh, so it is enough for for a long time. Also, the device is equipped with an emergency shutdown system, which will protect the device with a short circuit.

Xiaomi Mi Power Bank 16000 - Best Portable Charger

Taken from the site: Krutmobile.com.ua

Xiaomi has occupied the leading position in the electronics production, offering the optimal ratio of "price and quality". Their portable batteries did not become an exception in this regard. The device has a capacity of 10,200 mAh. The presence of two ports allows you to charge two devices at once. The power of the current on both ports is 2.1 A. this is enough to charge the tablet or smartphone battery in a couple of hours. The amount of charge in the battery can be recognized by the indicator on the device.

Canyon CNE-CPB100

Taken from the site: PetRomap.ru

Canyon has become famous for the production of portable battery. The CNE-CPB100 model boasts a capacity of 10,000 mAh and the presence of two USB connectors. Thus, you can simultaneously charge two devices at once. The output power is 2 A. Compact dimensions of the device make it easy to carry it with you in your pocket or handbag. Separately, it is worth noting the democratic price of the device.

TP-LINK TL-PB10400

Taken from the site: compw.ru

TP-LINK decided to experiment with the form of the device and instead of the familiar flat battery created a stretched rectangle. Unusual design for PowerBanks looks very pretty and distinguished by practical convenience.

Interesting!

The container of the device is 10,400 mAh. This volume is enough to charge 4 times the popular iPhone 6S.

The device has as much as 6 degrees of protection against a sudden jump of energy or short circuit. The battery is equipped with two uSB ports With a power of 1 and 2 amps. Also, TP-LINK engineers equipped the gadget with a blue LED flashlight. Thus, the device will not only save your phone from a sudden disconnection, but also help to find a way in the dark.

CANYON CNE-CPB78

Taken from the site: kupi.tut.by

A decent product from the famous manufacturer of mobile periphery is Canyon. CNE-CPB78 has a pretty and compact design. Also in the Piggy Bank of Pluses can be drawn by two USB ports and built-in lED flashlight. The impressive amount of battery 6800 mAh allows you to charge the phone in a matter of hours, and the battery is enough for 3-4 full charging cycle. Also a considerable plus is a democratic price.

Xiaomi Mi Power Bank 10000

Taken from chipmart.ru

Another product from the famous chinese manufacturer. This is a pretty fresh development of Xiaomi, which has become easier and more compact on their predecessors. The battery was enclosed in an aluminum case, which should reliably protect your device from external influences. At the same time, PowerBank weighs only 200 grams. Battery capacity is 10,000 mAh. This is enough to fully charge some modern smartphone. At the same time, the complete charge of the battery itself is achieved in 5.5 hours. The amount of the available charge can be determined by the appropriate indicators on the device.

We hope that this top will help you choose the best portable charger. In this rating portable batteries We have included the most popular devices that have received the greatest recognition from consumers. But when choosing, it is still necessary to focus on the indicators of your device, in order not to be mistaken.

Good day Dear readers! In this post, I will tell you and give examples of how to charge your smartphone correctly! All the details under the cut :) Nowadays, every person, and even more so gic, has at least three charges for their devices on the Android OS. But everyone ...

Good day Dear readers! In this post, I will tell you and give examples of how to charge your smartphone correctly! All details under the cut :)

Nowadays, every person, and even more so gic, has at least three charges in the house for their devices on the Android OS. But all charges have a small difference. Charging for the smartphone, for example, has a current strength within 1a, and charging for the tablet is 2a.

Most issues the question, is it harmful to charge the smartphone with a charching from the tablet, or vice versa? BUT main questionhow to charge the smartphone correctly? This question, of course, occurs most often from newcomers in mobile world. But still he takes place!

There are a lot of opinions about how to charge this or that morning. Someone advises to discharge the battery of the device every time to 0% and charge up to 100%. And someone recommends keeping charges ranging from 20% to 80%. The complete discharge of the battery takes place if the nickel battery is, because nickel batteries have the so-called "memory effect". But as we know, in modern devices rechargeable batteries "Lithium-ion", and such batteries do not have this effect. Thus, the myth of "discharge of 0%" we immediately exclude from our device charging methods :)

What then the method will be more gentle for our batteries?

- Recharge device

The most gentle mode for the battery of the device will be its regular recharging. Many advise that there would be no battery charge even below 50%. I would advise you, recharge the device every time the charge is lowered up to 20%. It is best to keep charges ranging from 20% to 80%.

- Do not leave the device for charging "at night"

As I said above, a sparing mode for a battery is from 20% to 80%. There is an opinion that if you leave the device on charging "for the night", it is precisely this shortens the battery life. But it relates more to "Nou Neum" devices (China). Since most official, branded gadgets have built-in controllers that control the charging / discharge current of the battery. When 100% charge is achieved, the controller displays the key, and the voltage stops being fed to the battery, in order to avoid recharging. So leave overnight, and do not be afraid of anything!

- Discharge at 0% is useful, but not often :)

Yes, yes, it is discharged to zero. Although I wrote above, it is very harmful to the battery, but once a month it needs to be done. Now I will explain why! All our devices display the charge in percent, due to frequent recharges, this indicator shows incorrect readings. Calibrate these readings can simple way, Batery discharge in zero and complete charge up to 100%.

- Store the device in the refrigerator!

No, about the refrigerator is of course a joke. But I must tell you that high temperatures reduce the life of the device battery. Those who are really asked the question of the effect of temperatures on lithium-ion batteries They know that if you store it at a temperature of 20 degrees Celsius throughout the year, the battery loses about 20% of its total capacity.

- Is it possible to charge a smartphone charging from the tablet?

We all have, including, in the house there are at least two charges. In my case, it is charging from LG Nexus 4 (with current power at the output of 1.2 A) and from ASUS Nexus 7 (2012) with output 2a. And no matter how I wanted, I either the tablet charge charging from the smartphone, or vice versa. So let's understand whether such interchange is harmful to the chargers?

Opinions are divided into this regard ... Some say that a larger current than in the "native" charging can damage the battery, or in general to derive a device. Others suggest that it is completely harmless to battery.

But personally, I believe that the "interchangeability" of the charging devices has the place to be, and nothing will happen to your devices. Why? Because, as already said, each device has a charge / discharge controllers and a battery controller. So this very controller will not give the device to "take" more current strength than he needs. If for example, a smartphone is charged from "native charging" with a current of current 1a, then from charging a tablet (which has a current 2a), the smartphone will also consume the 1a required to it.

IMHO

Personally, I charged my Galaxy Nexus charging from ASUS Nexus 7 (2012) throughout the year, and nothing terrible happened. And now the same charging from Nexus 7, I charge LG Nexus 4. And I do not worry about damage to the battery and even more so, the failure of the device fails!

And what are you dear readers, think about this? Is it possible to "interconnect" charging devices from different gadgets in the house?

Each device: tablet, smartphone, electronic book Or the laptop is supplied with your chargers. At least it was until recently. Now most modern smartphones and tablets have a connector Micro USB.And it becomes standard. Against this, the question appears: is it possible to charge all your gadgets through one charger?

Despite the fact that over time, more and more chargers are produced according to a single standard, several types of chargers are still widespread:

Lapp!. Unfortunately, still not invented a single standard for charging laptops and netbooks. There is no universal connector, which means that an individual charger needs for each device.
8-pin connectors Lightning Connectors for Apple gadgets. Since 2012, Apple has standardized an 8-pin connector, and now all devices released after this year: iPhone, iPad, iPod Touch., iPad Nano, can be connected using a charger certified and designed by Apple.

Old apple devices have a 30-pin connector, and for those who have left, Apple launches adapters Lightning → 30 PIN.

Micro USB Charger. All new smartphones, including devices on android database and Windows Phone, are manufactured with a standard Micro USB connector, so it is not necessary to select individual chargers for them, as for old mobile phones. To meet this standard, Apple offers Lightning Connectors → Micro USB adapters.

Is it possible to charge any device with the connector Micro USB from any charger Micro USB.?

In theory, each Micro USB charger can be plugged into a device with such a connector, which means that it can be used in general for any device, whether it is a smartphone, a tablet or even a laptop. Very convenient - if you buy new smartphone or tablet, you can charge it with an old charger. The only difference is in the voltage and strength of the current, but this later.

Even through the adapter Micro USB → USB, you can easily charge the device from a laptop.

Dangerous charges

HP Chromebook 11 is the first laptop that the Micro USB connector is used for charging. Most laptops require more energy and cannot be charged in this way.

But this laptop was removed from sale because of messages about overheating the charger, which could cause a fire. The HP representative advised users who bought HP Chromebook 11, not to use the original chargers supplied with the device.

You can continue to use a laptop, charging it through one of Micro-USB chargers, proven underwriters Laboratories Inc. (The Company for Standardization and Certification of the United States), for example, from a tablet or smartphone.

You can easily recognize chargers, tested and approved underwriters Laboratories Inc. - They have a logo "UL LISTED".

This means that the charger is checked for security, will not cause a fire and will not hit you current. But in some cases, even proven chargers can deliver trouble, namely, when the battery is faulty. So the cause of the fire can be a non-original cheap charger, and the same cheap, not certified battery.

Voltage and current

All USB connectors are designed for voltage in 5V. This means that it is possible to connect a charger to the device via Micro USB.

Another thing is the current. To quickly charge the device, the chargers increase the strength of the current, which is measured in amperes (A). Charger supplied with android tablets, calculated for a large current strength than similar devices for android smartphones. For example, the charger for the tablet is designed for 2a, while the charger for the smartphone is only on 1a.

If you connect the charger from the smartphone to the tablet, the tablet will be charged very slowly, because the current forces are not enough for normal charging. If you try to charge the smartphone through the charger for the tablet, nothing terrible will happen, and your smartphone will not explode and will not light up.

Most likely, the smartphone will not take the maximum possible amount of ampere, which provides the charger, so everything will be fine. Maybe the smartphone is just a little faster charges.