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Along with increased functionality and performance mobile phones, the requirements for batteries are also increasing. A typical battery can power the device for 2-3 days, but if operation involves activity on social networks, the use of multimedia and frequent conversations, then you can expect discharge in the coming hours. Moreover, carrying a charger with you is not always convenient - it’s not only about the need to find the treasured outlet, but also about attachment to it as such. The optimal solution to the problem may be a portable battery for mobile phones, also called a Power Bank. Such accessories also cause some trouble, but with them the user still gains some autonomy.

Selection by capacity

When first getting acquainted with the characteristics of external chargers, an inexperienced user may be fascinated by the huge capacity of such devices. For example, there are models with a capacity of 10,400 mAh. It would seem that such an arsenal would be enough for 5 sessions of replenishing the energy of a mobile phone whose battery contains 2,000 mAh. In reality, everything is not so simple. The fact is that a portable phone battery has a nominal voltage of 3.7 W. In turn, mobile devices are charged at 5 V. This difference leads to a loss in energy potential of up to 30%. And this is in best case scenario, since cheap Chinese models provide no more than half of the declared volume.

But you still have to rely on official data - everything depends only on the brand of the manufacturer, based on whose reliability a discount should be made in the actual amount of energy. By the way, if a portable battery for a phone is purchased for the purpose of emergency maintenance of the device for a short period of time, then there is no need for a large capacity and you can limit yourself to a compact, but high-quality and reliable accessory.

Selection by current strength

For most users mobile devices, depending on the power source, the charging speed indicator is also important. This characteristic is determined by the current strength, which is measured in Amperes (A). Typically phones and smartphones charge at 1A, while more demanding tablets require 2A. You should be guided by these indicators when choosing, by the way, it can be supplied with two outputs - 1A and 2A. As a rule, such models also have a decent volume - at least 7,800 mAh. Such devices, of course, are more expensive, so you may think about using an external battery with one output to service different devices. But such a solution is inconvenient and risky, since the discrepancy in current strength is harmful to the phone. And this is not to mention that the charging process itself will take longer in the case of a tablet.

Buying a Power Bank without a battery

For the most economical ones, we recommend purchasing a separate Power Bank case and battery. This option is beneficial for the reason that you can initially be confident in the reliability and characteristics of the battery. In turn, the Power Bank will act only as a shell for the battery, ensuring interaction with the phone. True, there are also disadvantages to such a solution. The fact is that the portable battery for the phone in this case will operate on a weak outgoing current. Therefore, it will take more time to charge. On the other hand, the owner will have the opportunity to change the battery to another one, while maintaining the main Power Bank.

Manufacturers and prices

The importance of the quality of the charger has been noted more than once. In many ways, the reliability, durability and performance properties of external power supplies are determined by the manufacturer. As experts note, Korean models from LG and Samsung are the most trusted. Usually the sellers themselves do not hide the affiliation of the batteries with these brands. If the label does not indicate the manufacturer at all or if a little-known company appears in it, then it is better to refuse the purchase. It is also worth mentioning manufacturers specializing in the development of such devices. You can safely choose a portable external battery from the Melkco, YooBao or Momax lines. As for prices, they are quite affordable for the average user of a modern phone. Models with a capacity of 10,000 mAh or more usually cost 1.5-2 thousand rubles. By purchasing the 5,000 mAh option, you can even spend 1 thousand rubles. And these prices, by the way, apply to branded models.

How many times have you suffered from your smartphone running out of power at the most inopportune moment? What if you need to make an urgent call or wait for an important message? It’s good if there is an outlet or computer nearby that you can quickly charge your device from. But what if they are not there? The solution is to use an external battery (power bank). The Internet project “Be Mobile” has collected tips that will help you choose the best option for you.

First, let’s define what an external battery is and what its advantages are. An external battery or Power Bank is a portable high-capacity lithium-ion battery that can be used to charge a variety of mobile devices: phones, smartphones, tablets or e-books. This battery is capable long time keep energy within yourself. You can take it with you to work, school, on a business trip or while traveling.

The portable charger can be made in various form factors with a housing made of plastic, polycarbonate or metal. On sale you can find models in the form of boxes, bars, disks, cones and tubes in a variety of colors.

The Power Bank is charged from the electrical network or from any device with a USB output (for example, a computer or laptop).

All external batteries are equipped with one or more USB ports. Modern phones, smartphones or tablets can be charged using a USB cable, which in most cases is included with the device.

The main parameter when choosing an external battery is energy capacity. Everything here is simple and clear. The larger the capacity, the more energy the device stores, and the more expensive it is. Capacity is measured in mAh - milliamp hours.

Currently on sale you can find portable chargers with a capacity ranging from several hundred milliamp hours to several tens of thousands. You can estimate the level of charge you will need based on the battery capacity of your smartphone or tablet.

For example, in an average smartphone the battery has a capacity of 2,000 mAh, in high-performance and expensive models - from 2,500 to 3,000 mAh. This means that a fully charged 5,000 mAh external battery will be enough for 2-2.5 charging cycles. A fully charged 10,000 mAh external battery will last for 4-5 cycles. If portable charging is necessary for your tablet, then you should choose from models with a larger capacity, for example, 20 or 30 thousand mAh.

Currently produced portable power sources use lithium-ion or lithium-polymer batteries. Depending on the type and design, the nominal battery output voltage may vary (3.7, 4.2, or 7.4 V), while the standard USB bus voltage is 5 VDC. Obviously, in this case, the battery has a capacity of 2000 mAh with a nominal voltage of 3.7 V, even in ideal conditions will not work for even an hour and a half when powering an external load connected via a USB bus and consuming a current of 1 A. In addition, the amount of electricity that can be stored by batteries having the same capacity but different voltages will vary.

Tip 2: look at the current strength, it affects the charging speed

Another factor that affects the charging speed is the current strength. The more amps, the faster the charging speed. For phones and smartphones, this figure should be at least 1 ampere. Otherwise, the process itself will occur extremely slowly. To fully charge, it will take 3 or 4 times longer than from the mains.

For tablets, devices with a current of 3 A or more are preferable. The ideal option is 4 A.

Tip 3: trust, but check, because the declared capacity does not always coincide with the real one

Another important point- actual capacity of Power Bank. The fact is that many manufacturers embellish the performance of their products. Of the 50 models of portable chargers that came to us for testing in Last year, 46 had a capacity significantly less than stated. On average the difference was 25%.

For example, the manufacturer indicated that the external battery has a capacity of 10,000 mAh, but in reality it is 7,800 mAh. The difference is due to both the dishonesty of the developers and the improper storage of batteries during transportation and subsequent sale.

The actual capacity is also affected by such an indicator as self-discharge.

On average, external batteries with a full charge are discharged by 5% within two weeks. This is worth considering if you do not use Power Bank for a long time. To activate electrolytic reactions, you should charge the device before use.

Keep in mind that the battery capacity will decrease over time. Our measurements show that with active use, a high-quality battery loses its capacity by 15% per year, the cheapest models - 35%.

To monitor the charge level, almost all Power Banks use LED indicators. And some external batteries are equipped with LED displays that show exact condition charge as a percentage.

Tip 5: choose a power bank with multiple USB ports to simultaneously charge your friends’ smartphones

Some models of portable chargers have several USB ports for connecting two, three or even more mobile devices at once. This option is suitable for simultaneous recharging, for example, when you go on a trip with friends. It's comfortable. You can all charge your phones, smartphones and even tablets together.

You often ask us where you can be guaranteed to buy a high-quality external battery cheaply. We cannot give a definite answer. Of course, the reliability of purchasing from a large Russian online store or retail chain is higher, but the prices there are also higher. It is worth remembering that little-known Chinese sellers have a peculiarity: they can deceive. Their external batteries are much cheaper than their branded counterparts; they often indicate a capacity 2 or 3 times higher than the real one. Too much low price could be a trap. Although branded Power Banks in such stores can be fakes.

Compact

If you need compactness, you can pay attention to ergonomic models, for example, Anker Astro E1. This battery will not take up much space in your bag or pocket.

Universal

The ideal option would be batteries with a capacity of about 10,000 mAh. This is approximately three times more than the battery of a modern smartphone, which means that even taking into account the loss of energy during charging, it will be enough to fully restore the gadget’s charge several times. A high-quality example of such a power bank is the Anker PowerCore 10400 mAh model.

Another option for a high-quality external battery with universal functionality is the Aukey PB-N42 10,000 mAh.

Supports fast and wireless charging

If universal options are not your option, then you should pay attention to models with additional functions. For example, a power bank with fast charging support will be able to charge compatible gadgets much faster than usual. If the battery is capable of delivering a consistently high current (about 2A), then even without fast charging support, your gadgets will charge stably and relatively quickly.

Among the ones we recommend is the Baseus Wireless Charge Power Bank 8000 mAh external battery. Its main feature is the presence of Qi wireless charging. That is, to charge a smartphone, you don’t need to connect a wire to it, just put it on an external battery and that’s it. Charging started. In addition to wireless charging with a current of 1A, the device supports a wired USB connection of two compatible devices, while the output current to the USB connectors is 2A.

A good option for iPhone is the Zikko PowerBag 6000 mAh external battery. The main difference from popular Xiaomi external batteries is MFI certification, which means the battery is compatible with all Apple devices. The device supports fast charging - the output current to the USB connectors is 2.4 A. In order to monitor the battery capacity, there are special LED indicators at the end. A nice bonus is that the smartphone is connected to the battery using the included Lightning cable.

With record capacity

If you need a strategic boost of power, check out the HyperJuice 26,000mAh AC Battery Pack. This giant can quickly charge absolutely any device, including a tablet, other portable equipment and even a laptop. There are 2 USB output connectors here. One provides a maximum charging power of 3A at a voltage of 5W, and the other provides a current of 2.4A. A nice bonus is the ability to provide 220W power to any electrical appliances with a power consumption of up to 100W. You can connect a laptop, a flashlight, and even a blender to this battery.

The HyperJuice AC Battery Pack case is made of aluminum alloy, which perfectly protects the device from external mechanical influences.

We hope that our tips will help you buy a truly high-quality external battery and charge your phone, smartphone, laptop or e-reader without any problems.

A constantly discharged mobile phone or tablet has become a headache for the user of modern digital technology. The reason here is clear: manufacturers are adding more and more functions to their devices, and their characteristics are becoming even more powerful. This, in turn, leads to faster battery discharge, and with intensive use we need to charge our favorite assistants more and more often.

At a huge number portable electronic equipment, the question becomes relevant: “Which charger should I use? So that it doesn’t take very long to charge, and the battery functions properly? " Let's figure out which charger is best suited for your gadget.

Cell phones. Mobile phone is the number one device in life modern man. First of all, when choosing a charger for your phone, you need to pay attention to the type of connector for connection.

In most Android phones, it is MicroUSB; the MiniUSB type connector is less popular, and in older models, the memory connectors may differ depending on the manufacturer. Apple has taken a separate path - it uses its own connectors: the iPhone from the first model to the iPhone 4S uses a wide 40-pin (40 Pin) connector, and, starting with the 5th model, a thin 8-pin Lightning connector ).

The quality of the charging process is affected specifications There are two chargers: voltage (measured in Volts (V)) and current (measured in amperes (A)).

Almost all mobile phones require a five volt (5V) charger, and the current may vary. Simple push-button phones they use chargers up to 1A, and smartphones need a current from 1A to 2A. Most modern smartphones charge from 1A, but some phones with capacious batteries may require a more powerful charger, for example (2A), models with 4000 mA batteries (2A), Z series (1.5A) and others. When choosing a charger, you can rely on the factory specifications (manufacturers always indicate this information on its case, albeit in very small text). Otherwise, you can read it in the instructions for your mobile phone, as well as on the manufacturer’s official website.

What happens if you use a charger that has different characteristics from the factory ones? If you charge your phone with a weaker charger, then charging will take longer, especially if you are downloading something, even if it is 3D models that this site provides, and this will damage the battery over time. And when using a strong charger, the phone’s built-in controller will take only the necessary part of the current and nothing bad will happen, although manufacturers do not recommend doing this. Note that USB outputs on computers only have 0.5A, so it takes a long time to charge your phone this way.

To increase the battery life of your phone, you should know the following rule: if the charge is too low (less than 10%), charging the lithium-ion battery is “stressful” and negatively affects its operation. Therefore, we make sure that the battery charge does not fall below 10-15% and do not leave the phone charging overnight. It is better to recharge the phone (for example, for 15-30 minutes), it does not damage the battery.

Tablets. Technically, most tablets are not much different from mobile phones, only they have a larger battery, so they use a powerful charger. But when choosing a charger for a tablet, you need to take into account a nuance - some tablets are charged from a 12-volt charger, while others are charged from a 5-volt charger. Therefore, if you connect a tablet that needs 5V to a 12V charger, it may burn out. If it’s the other way around, the tablet simply won’t charge. All other selection rules are similar for mobile phones: you need to determine the correct amperage (for most tablets this is 2A), monitor the charge level but do not overcharge.

Laptops and netbooks. Manufacturers equip their laptops with a variety of chargers, so their choice should be treated more carefully. Here you can purchase either an original charger (identical to the one included in the kit) or a universal one. The universal charger is suitable for several types of laptops, so before purchasing it, check whether it fits your PC. Check whether the connector is suitable for connection, and whether the parameters match the laptop. If the universal charger has a voltage selection switch, it should be placed in desired position before connecting to a computer. Remember, when using a laptop for a long time from the mains, its battery should be removed (of course, if this is provided for by the design). This will extend the life of the battery itself.

Electricity from thin air. Nikola Tesla invented the ability to transfer current from one device to another inductively (non-contact), and modern manufacturers began to use his ideas. There is currently a small amount of such equipment, including mobile phones, but this situation is gradually changing.

In order to charge your phone, you just need to place it on the charger, without connecting a cable, but it is necessary that it has a built-in magnetic receiver. There are few such models: these are some Nokia models, the Samsung flagship – Galaxy S6 and several other types of phones. By the way, the Finns were the first to use this know-how. If your phone does not support wireless charging as standard, do not worry, there are cases and replacement phone panels with a built-in signal receiver. Such an accessory will increase the functionality of the phone, but will also slightly increase its size.

Now we have figured out how to choose the right charger for your phone, tablet and laptop. And remember, the better you take care of your equipment, the longer it will last you.

For ordinary person Charging is a cord, two contacts and a plug for the socket. If everything were that simple, all charges would be the same. But have you noticed that with some devices your phone comes to life faster, with others – slower. The third charge is not suitable at all. We constantly lose them, forget them with friends or in a cafe. Once every six months the cable will definitely break down.

Chargers are one of the most necessary and popular accessories. We explain which charger to buy so you don’t go broke and it works.

Inside modern cables there is a circuit board with microcircuits, which determines the operation of the accessory. different modes: from charging to synchronization. Socket adapters have different characteristics and speeds.

Original charger: it will definitely work, but very expensive!

Who better than the manufacturer to know everything about his brainchild! The original charger suffers from only one drawback - its high price. 3,590 rubles for charging for a MacBook and a new generation iPhone is a robbery. And other brands set a high price bar. Both Samsung and Sony - from two thousand.

In Russian online stores, prices for analogues start at about 800 rubles. On Aliexpress - even 300-400 rubles. Add to this a branded cable for 1990 rubles - and you will get a fast charging kit for iPhone 8 for 10% of the cost of the smartphone itself.

Prices for accessories on the Apple website are steep, but the choice of alternatives is not as wide as that of Android competitors

In the kit, Apple includes its old slow charger and cable, which will charge the new iPhone by a maximum of 25-30% in 30 minutes. In the same half hour, the flagship from Samsung/Sony/Huawei will be half charged, and the battery capacity of Android devices is one and a half times higher. The desire to make money selling accessories overcame common sense.

Where can I buy: in the official online store of the smartphone manufacturer or in the nearest official reseller store (not to be confused with the kiosk in the transition).

Chargers from “foreign” trusted companies: already cheaper

If the price scares you, you can buy a device from a “normal” manufacturer of universal accessories. For example, Belkin, Nillkin, Qi Wireless, Anker, SnowKids and others. See the assortment of retailers at the re:Store level. You will receive a guarantee that the characteristics (power figures, output current) correspond to the declared ones and a company guarantee. The same Belkin is among the certified Apple manufacturers.

For Android phones, official chargers are quite stylish and/or cute. You can use such chargers without fear for the safety of your gadget.

Will you forget this kind of exercise? / Photo – Andru

Where can I buy: on the websites of device manufacturers or in hardware stores. Be sure to check that the charging company is the one you need. The price is already average: you can’t buy a charger from a famous manufacturer for less than 500 rubles.

Counterfeits and no-name chargers: better buy coffee with that money

Anything that costs roughly 100-500 rubles and is sold at a stall in the passage is a bad choice. Such charges are divided into two types: counterfeit expensive brands and noname.

The purpose of fakes, of course, is to be similar to the original. Noname is some kind of miracle with an unpronounceable name that is clearly of Asian origin, like Olaudem crdc.

Such charges may suddenly contain other functions, such as a flashlight.

Manufacturers of well-known accessories are afraid of ruining their reputation. Counterfeits and nonames have nothing to worry about - there is no reputation.

In the case of Apple's lightning connector (and these are iPhones from 5 to 7 Plus), everything is completely bad. The iPhone will not charge and may display a message that the accessory is not supported. And after some time, about two weeks. It’s too late to return the charger to the store, and I’m too lazy to bother with hundreds of rubles.

With USB Type C and the still most common MicroUSB connector in Android, everything is simpler in terms of compatibility, but just as unreliable in terms of quality.

Disadvantages of counterfeit chargers: discrepancy with the numbers on the label, the slowest charging, incompatibility with declared devices, and, of course, a short-lived controller.

Controller - important detail, which protects the phone. This is a small set of transistors that are responsible for the fact that the smartphone will automatically turn off charging when it reaches 100%. Plus, the controller evaluates the supplied voltage and prevents overheating.

The problem is that cheap Chinese power adapters are made from dubious components. When the transistors burn out, your smartphone can receive a powerful incoming current charge and burn out. But you won’t be able to check in advance what quality the controller is in the charge.

Chargers with many connectors are less reliable than those with one. In addition, this is a clear sign of a cheap Chinese accessory. Branded chargers with multiple connectors also exist, but there are only a few of them.

Fire hazards and the risk of breaking a smartphone are not the only problems. The charging numbers may be stated alone, but in reality the current strength and voltage will not correspond to reality. About them - below.

Just something complicated: the higher the output current, the faster the charging

If you are used to charging your phone not from a laptop, but from an outlet, it is important to have a good power adapter (the same outlet to the cord). When choosing an adapter from a third-party manufacturer, focus on the original charger, or more precisely, on the current value “A”.

A few simple truths:

• Current strength is measured in amperes. Always First of all, look for the marking on the charger Latin letter"A";
• Typically, a smartphone charger has a current of 1 ampere, less often: 1.2A, 2A, 2.4A;
• Most smartphones require adapter sockets to charge power from 5W (W).

Many modern smartphones can charge much faster if you use a more powerful charger. In most cases it will come bundled with the exception of Apple and Sony.

The standard iPhone package (even those that support fast charging) includes a power adapter with a power of 5 W (or the Latin “W”) and an output current of 1 A. Standard charging with a current of 1 A will charge the iPhone 7/8 Plus for hours, and Samsung Galaxy S8 can handle it in an hour.

At the Apple Store you can buy a charger with a power of 12W, 29W, 61W and even 87W. The thickest adapters. The output current will be from 2.4 A, and such adapters are intended for Mac or iPad.

Don't be afraid that your phone may burn out: a special controller will limit the current to that which is supported by the phone, so you can safely use powerful charges.

If you have other manufacturer's equipment (computers, tablets) - use their chargers to achieve high speeds. A computer connected to a power outlet is itself a complex controller.