It's all physics, I'm not strong in it, but a fact is a fact. First of all, when buying, pay attention to the capacity. From it we calculate 60% and get the exact number of charge without loss, which will go into the device itself.
You should not be fooled by buying at a low price and a large number of milliamp hours. Such gadgets are quite mediocre. Remember, a good power bank with 20000 mAh should not cost less than 2000-2500 thousand rubles.
Current strength
It depends on the strength of the current how long the wireless charger will charge your gadget. Typically, smartphones need 1 amp to charge, and tablets 2.
Weight and size
Why is this an important selection criterion? It's simple, portable charging should be:
- compact
- not too heavy
- and have a comfortable design (the thinner the better)
After all, why are you buying it? To take with you on a hike, on a trip, on a picnic, to the country house and so on. In general, in the place where there is no way to charge from the outlet.
Of course, the power bank should be small. Who wants to carry a stone weighing several hundred grams in their bag? But there are two sides of the coin here. The smaller the device you purchase, the less capacity it has.
We need to look for the golden mean. Moreover, manufacturers take into account such parameters and do everything possible to combine high performance and compactness in one device.
Number of USB connectors
Imagine that you went on a camping trip with your friend. So you sat down to eat, relax, go to the social. network or watch a video clip ... But bad luck, as luck would have it, the batteries on your smartphones are empty. And then you remember that you have a portable battery!
You take it out of your bag with a satisfied look and put your gadget on recharging. Your friend certainly feels left out. Well, right, you had to think in advance and buy yourself such a device ...
Of course, you are a kind person and don’t do that, but just share a second usb port with a friend. Not for nothing that many models are equipped with them. By the way, two manufacturers are not limited. You can often find more.
Battery type
The battery itself in the device may be ( click to open description):
lithium ion
In appearance, it is similar to conventional finger batteries and is the most optimal in terms of price and quality. The lithium-ion battery lasts for about 1000 charges, then the power starts to drop and the mAh disappear. 
lithium polymer
May take on a flatter shape. A lithium-polymer battery will last much longer (up to about 5000 charges), which will make it more expensive. Such batteries in power banks are less common. 
Removable battery
Some devices have a removable battery feature. That is, batteries that change as needed. Thus, you get yourself a case of a portable device, and you can always replace the battery yourself.
The advantage of such models is that they will last much longer. Over time, any power bank wears out and its charge becomes less and less. In the case of this version of the device, you can always replace the battery with a new one and, voila, you have a brand new device.
But there are also disadvantages. Such a power bank operates on a small current strength, and this increases the charge time.
Availability of the indicator
In addition, you can find a light indicator on the device. Which indicates how much charge is left. You can also find a device that has a display.
Buyers note that it is much more convenient to see the percentage charge on the display than the indicator lights. But there is also a minus. The screen also consumes some of the energy that could go into the gadget.
Automatic shutdown
One of the important features of the power bank is the automatic shutdown. It protects against short circuits as well as power surges that can damage devices being charged.
In addition, this feature prevents wasted energy. For example, you can charge your gadgets overnight and not worry about waking up after a while and disconnecting the battery.
Additional features and accessories
For example, for hiking, you can purchase a power bank with a flashlight and a hand warmer. Some models are even equipped with a Wi-Fi connection and an input for a flash drive. In short, what they just don’t come up with and as soon as manufacturers don’t decorate the device.
You can also pick up an adapter for charging it and a protective case for your external battery. Mostly silicone cases, they will protect the device from dirt, dust and possible water ingress. The adapter will help you charge the power bank 2 times faster.
Which brand to choose an external battery?
There are a LOT of companies producing these devices. Among them there are both popular brands and unknown ones. Basically, all devices are made in China. For this reason, I see the point in ordering the device there.
- Firstly, you do not overpay extra money
- Secondly, delivery to Russia and the CIS is mostly free
At the exit, we get a device from the same China, but much cheaper than in a city store. Of course, there is also a minus, since you will have to wait for a parcel for about a month. But, for example, it does not scare me at all. In any case, in terms of money, you remain in the black. And if, then the purchase will become even more profitable.
I picked up several power bank models from Chinese marketplaces such as GearBest and Aliexpress. I will also single out a couple of well-known companies whose devices are most popular around the world. Here are the brands that we will cover in this article:
- Samsung- Korean company known all over the world
- Xiaomi- popular Chinese brand
- Canyon is a Dutch electronics company.
- Baseus is a young Chinese company
- USAMS- another Chinese brand that produces electronics and accessories
- Yoobao– high-tech electronics from China
Canyon CNE-CPB130DG one of the best portable chargers
Please note that the model is equipped with a light indicator and two USB ports, which allows you to charge two devices at the same time.
VIEW FEATURES
- Capacity: 13000 mAh
- Current: 2.0 A
- Voltage: 5V
- Battery type: lithium-ion
- Weight: 259g
- Size (mm): 62 x 142 x 23
- Package contents: device, usb cable, user manual
- Additional features: LED indicator, 2 USB ports
- Country of origin: China
Samsung EB-P3000C external compact battery
A fairly compact and lightweight power bank, but at the same time it is not inferior in its power to charge a smartphone or tablet. Has one USB port. The warranty when buying in the original store will be 6 months.
SHOW FEATURES
- Capacity: 10000mAh
- Current: 2.0 A
- Voltage: 5V
- Battery type: lithium-ion
- Weight: 240 g
- Size (mm): 71 x 147.5 x 15
- Package contents: device, usb cable (with microUSB/Type-C), user manual
- Additional features: fast charge mode
Original Xiaomi PLM06ZM with good power
The original of the well-known and quite popular Chinese company XIAOMI. The power bank has two USB output ports and one micro USB input for charging the device itself. As well as indicator lights on the battery power status. Real power guaranteed at 14000mAh.
SHOW FEATURES
- Capacity: 20000 mAh
- Current: 2.4 A, 2 A, 1.5 A
- Voltage: 5.1V, 9V, 12V
- Battery type: lithium polymer
- Weight: 328 g
- Size (cm): 13.55 x 6.76 x 2.39
- Package contents: device, usb cable
- Additional functions: fast charging, supports small current, so it is easy to charge bluetooth headset, earphones, smart bracelet and other small things
USAMS mini compact portable battery
Small and compact, yet powerful. Able to charge two gadgets at the same time. For lovers of the classics, the device is available in both white and black. There is also a model with or without a display to choose from.
baseus super slim power bank
The thickness of the device is only 15 mm, which immediately indicates that the type of battery is polymer. This means that the performance of such a device is much greater, but the charging time is also increased. Black or white design to choose from. The actual charge capacity is approximately 7000-9000 mAh.
SHOW FEATURES
- Capacity: 10000mAh
- Current: 2.1 A
- Voltage: 5V
- Battery type: lithium polymer
- Weight: 181g
- Size (mm): 135 x 67 x 15
- Package contents: device, usb cable, instruction
- Optional: 2 USB ports, display
USAMS US-CD06 ultra thin external battery
Another polymer battery with an unusual mosaic design. It has two USB ports and one micro usb for recharging. The power indicator will tell you about the power status.
Romoss Sense 8+ powerful 30000 mAh power bank
A fairly large, universal power bank with a large number of different ports. Suitable for charging iPhone, iPad and various Android smartphones. And you can connect all this at the same time, because the charge will definitely be enough for everyone.
SHOW FEATURES
- Capacity: 30000 mAh
- Current: 2.1 A
- Voltage: 5V
- Battery type: lithium polymer
- Weight: 671 g
- Size (cm): 167 x 80 x 32.8
- Interfaces: input - lightning, micro-usb, usb Type C; weekends - usb x 2
- Package contents: device, usb cable, instruction
Yoobao A2 lithium polymer portable battery
Powerful portable battery with accurate up to 1% digital indicator, two ucb ports, one micro usb and one lightning port.
SHOW FEATURES
- Capacity: 20000 mAh
- Current: 2.1 A
- Voltage: 5V
- Battery type: lithium polymer
- Weight: 500 g
- Size (mm): 174 x 93 x 14.5
- Package contents: the device itself + micro usb + carrying bag
A year ago, I didn’t understand anything about gadgets at all and decided to buy myself a portable battery. Then no one told me how to choose a power bank for a smartphone. I spent 500 rubles on a battery, the capacity of which, as stated, is 8000 mAh. But in reality, the milliampere hours turned out to be only 3000.
Yes, it was my bad purchase... My iPhone 6S will never fully charge with this battery. Only 60%. Why am I writing this. If you want to buy a really high-performance device, then you should not spend less than 1000 or even 1500 rubles. Otherwise, you will have to pay twice and buy a second device with more power, as I had to do.
I hope this article was informative and helped answer the question of how to choose a portable charger for your phone, tablet and other gadgets.
Becomes in front of every user of a newfangled gadget. Only a good charger can provide it. Usually it comes with the phone, but over time it can become damaged and become unusable. In this case, the question becomes an edge before the happy owner of the device: how to choose a charger for the phone. Not everyone will fit your smartphone and be able to perform its functions flawlessly. It is important not to make a mistake and not to sell too cheap.
The main characteristics that you need to pay attention to when choosing a charger
A type
The memory can be original, suitable analogue or universal. Of course, it is most convenient to give preference to the first option. In this case, there is no need to puzzle over the compatibility of devices and be afraid of explosions or fires due to low-quality Chinese fakes. However, it is not always possible to get the original charger. Sometimes its cost is high and does not suit the buyer. In such a situation, it is best to choose a high-quality analogue.
On a good charger, it should be written with which smartphones it is compatible and the value of the output current.
There are also universal memories. They can be used to charge not only phones, but also other gadgets (for example, tablets, e-books, etc.). Such an acquisition is very profitable, since it replaces several portable chargers at once. When traveling, you do not have to carry a complete “combat kit” with you.
Output current
Must be at least 2.1 amps. This is enough to quickly charge your smartphone and tablet.
The charging speed depends on the strength of the output current. The lower the value, the slower the phone will charge.
For smartphones, you need a charger with a current strength of 0.7 A or more. A standard device usually has an indicator of 1 A. In order to charge a tablet, 2 A is required. If you want to be able to charge both gadgets, then make sure that the output current is at least 2.1 A. This technical characteristic is marked opposite the word “output”, which means “output”.
And finally, one piece of advice. If you want to charge your smartphone faster, put it in flight/airplane mode or offline mode. Then all unnecessary applications will turn off and the irreplaceable gadget will be ready for use 15-20 minutes earlier.
Good day dear readers! In this post, I will tell you and give you examples of how to properly charge your smartphone! All the details are under the cut :) Nowadays, every person, and even more so a geek, has at least three chargers in his house for his devices on the Android OS. But everyone…
Good day dear readers! In this post, I will tell you and give you examples of how to properly charge your smartphone! All the details under the cut :)
Nowadays, every person, and even more so a geek, has at least three chargers in the house for their Android devices. But all charges have a slight difference. Charging for a smartphone, for example, has a current strength of 1A, and charging for a tablet is 2A.
Most people have a question, is it harmful to charge a smartphone with charging from a tablet, or vice versa? And the main question is how to properly charge a smartphone? This question, of course, arises most often among newcomers to the mobile world. But still it has its place!
There are a lot of opinions about how to charge a particular device. Someone advises to discharge the battery of the device each time to 0% and charge up to 100%. And someone recommends keeping the charge in the range from 20% to 80%. A complete discharge of the battery takes place if the battery is nickel, because nickel batteries have the so-called "memory effect". But as we know, batteries in modern devices are "lithium-ion", and such batteries do not have this effect. Thus, we immediately exclude the myth of "discharging at 0%" from our methods of charging devices :)
What then method will be more sparing for our accumulators?
- Recharging the device
The most gentle mode for the battery of the device will be its regular recharging. Many advise that the battery charge does not fall even below 50%. I would advise you to recharge the device every time the charge drops to 20%. It is best to keep the charge between 20% and 80%.
- Do not leave the device to charge "overnight"
As I said above, the sparing mode for the battery is from 20% to 80%. It is believed that if you leave the device on charge "overnight", then this is what shortens the battery life. But this applies more to "no-name" devices (China). Since most official, branded gadgets have built-in controllers that control the charging / discharging current of the battery. Upon reaching 100% charge, the controller opens the key, and the voltage stops being supplied to the battery, in order to avoid overcharging. So leave for the night, and do not be afraid of anything!
- Discharging at 0% is USEFUL, but not often :)
Yes, yes, exactly discharge to zero. Although I wrote above that this is very harmful to the battery, it should be done once a month. Now I will explain why! All our devices display the charge as a percentage, due to frequent recharging, this indicator shows incorrect readings over time. You can calibrate these readings in a simple way, by discharging the battery to zero and fully charging it to 100%.
— Keep the device in the refrigerator!
No, about the refrigerator is of course a joke. But I must tell you that high temperatures shorten the battery life of the device. Those who really wondered about the effect of temperatures on lithium-ion batteries know that if you store it at a temperature of 20 degrees Celsius for a year, the battery loses about 20% of its total capacity.
Is it possible to charge a smartphone with a charger from a tablet?
We all, including myself, have at least two chargers in the house. In my case, this is charging from LG Nexus 4 (with an output current of 1.2 A) and from ASUS Nexus 7 (2012) with an output current of 2A. And no matter how much I want to, I either charge the tablet with charging from my smartphone, or vice versa. So let's see if such an interchange of chargers is harmful?
Opinions on this matter are divided ... Some say that more current than in the "native" charge can damage the battery, or even disable the device. Others say that it is completely harmless to the battery.
But personally, I believe that the "interchangeability" of chargers is the place to be, and nothing will happen to your devices. Why? Because, as I already said, each device has charge / discharge controllers and a battery controller. So this very controller will not allow the device to “take” more current than it needs. If, for example, a smartphone is charged from “native charging” with a current of 1A, then from charging a tablet (which has a current of 2A), the smartphone will also consume the 1A it needs.
IMHO
Personally, I charged my Galaxy Nexus with an ASUS Nexus 7 (2012) charger for a year, and nothing terrible happened. And now I’m charging LG Nexus 4 with the same charger from Nexus 7. And I don’t worry about battery damage, and even more so, device failure!
What do you dear readers think about this? Is it possible to "interchange" chargers from different gadgets in the house?
Probably, everyone at least once encountered a problem when the charger that came with a smartphone or tablet died. And now you have to go to the store to find a replacement for him. But, having bought a new charger, it suddenly becomes noticeable that with it your multi-core pet charges much longer than with the original one. And then it doesn’t charge at all, but just works from the network. In fact, this problem is quite easy to avoid. How? We'll tell you below.
If you believe the stories of former employees of official retail, then such products can be purchased even at Euroset or other well-known networks. And if you buy a charger on Gorbushka or Savelovsky, and even more so on Aliexpress, then you should be especially vigilant. Unfortunately, Aliexpress cannot be checked here. But the charger that you plan to purchase in your hometown can be tested. And you need it, because it's no secret that the lion's share of chargers that are sold in stores are just ordered from Aliexpress and sold to you at a premium.
The most common problem with them is when the charger gives out insufficient current to charge your smartphone, the device consumes more than it manages to receive from the network.
How to choose a quality smartphone charger?
- Buy original products. For example, if you have a Xiaomi or Samsung smartphone, then it is better to go to the company's branded showroom and purchase a charger there. Thus, you will get the original charger, which, by the way, will correctly and safely support various Quick Charge chips.
- Test the product before buying. Ask to insert the charger into the socket and check it with special software. For example, using the Ampere app .
- In some cases, you can even determine by weight which of the two charger power supplies is better. If it weighs too little, it will most likely give out minimal current and charge your gadgets extremely slowly.
- Pay attention to logos and inscriptions. They should be applied evenly and neatly, all inscriptions should be easy to read, and the fonts should not be smeared. These are clear signs of counterfeiting.
- A high-quality charger today cannot be cheap. We were unable to find a quality copy with a price of up to 500 rubles. From 500 and above, and even if you bargain, there are chances.
By the way, do not forget that the charging speed will also depend on the wire. It must at least be free from defects in order to obtain normal results.
Comparison of Noname and original chargers
We purchased and tested some not the most expensive (up to 500 rubles) and often found in retail outlets mobile chargers. Nothing exploded or burned, which is not bad. But the results of the battery charging process were disappointing.
Charging, which is in the title photo for the article, turned out to be one of the slowest. When connected to the network, the smartphone simply did not run out of battery, but it is almost impossible to charge it in this way if at least the screen is on. With such a charger, the device should be left alone in order to reduce energy consumption. Ideally, charge it off or in airplane mode.
The second type of charging is similar to the one in the picture above. By the way, "Samsung" is often written on them, but in reality it is not. If you put such a charge next to the original one, you can easily notice the difference in the fonts, as we wrote above.
Testing was carried out on a tablet.
So, several Noname chargers and a fake Samsung gave the following results:
The last result is still out of the question.
And now the result of the usual proprietary charging from HTC, without Quick Charge support.
As well as the numbers that the branded Xiaomi charger with Quick Charge support gives out.
You should not be 100% attached to these results, since there are many factors that can give an error in measurements. Including the device model, installed OS, the number of running processes, etc. However, now, when choosing a charger in a store, you can focus on these numbers at least approximately.
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Unfortunately, smartphone chargers today do not have a single standard. And how convenient it would be!
But, alas, when buying gadgets, users have to delve into technical subtleties that are completely uninteresting to them, according to the principle “whatever happens.” Is it really all that scary?
Classic phone chargers
The first association with the words "charger" is a block with a power plug and a wire with a plug for a smartphone.I also remember that the plug from one model may not fit another, and in the case of products this will almost certainly happen.
In fact, to the delight of mobile device users, today you have to choose from a variety of bad exotics much less often, connectors in most models come down to a small number of standards:
- microUSB- the most popular type, often found in modern devices.
- USB Type-C- a progressive standard with a bunch of goodies: the ability to turn on the connecting cable at any end, the high power of the transmitted energy, as well as the high speed of data exchange.
- lighting- a special standard used in their gadgets.
For example, if you are still using an iPhone 5, then you will need a Lighting 8-pin MFI memory type. Therefore, when buying, it is important to explain to the seller for which particular gadget you need a charger.
The most vulnerable part of the memory is the cable, which tends to “break” and fail if not used very carefully. On this basis, two device type:
- with fixed cable;
- with detachable cable.
Such models are more “survivable”, in addition, very often there are several connectors, so you can simultaneously charge several different devices. And here we turn to the need to have an idea about the characteristics of "charges".
They can be easily found on the body. In most cases, three main parameters are indicated:
- Allowable input voltage range:
- Operating frequency.
- Output characteristics.
But the third one is much more important. It may look something like this: 5VDC - 850 mA. This means that charging is done with direct current (DC) 850 milliamps at 5 volts. And this is exactly what we are interested in.
For most modern smartphones, the current of the charger must be at least 1 A. But it is best to clarify the information on the specific smartphone model for which the charger is purchased via the Internet.
After all, if the current strength is too high, then the device will not burn out, but will heat up during the charging process, just like the unit itself. And if it is too small, then charging will stretch over time.
A related problem is that when using a "non-native" charger, the process takes much longer than with the original device.
This is due to the fact that, due to incompatibility, the built-in protective system of the smartphone switches the process to a safe mode at a low current strength (0.5 A).
Charging without wires
A fashionable trend in the models of the leaders of the mobile industry is the use of wireless charging.
The absence of wires is always a fat plus: less unnecessary items on the table, as well as the absence of cables and connectors that can fail.
To recharge the gadget, just put it on a special stand, after which the process is activated automatically, just like when you connect the "normal" charger cable.
Currently, such an opportunity is provided only in, such as, for example, the Samsung Galaxy S8, but "state employees" also have the opportunity to use this technology.
To do this, you need to purchase a special adapter that connects through the appropriate connector, for example, Lighting, if you need to charge your iPhone, or microUSB, if we are talking about any Android model.
Quick charge function
Very often you can find references to the so-called Quick Charge technology developed by Qualcomm, a well-known manufacturer of mobile chipsets.
It would seem, what do they have to do with charging? The most immediate.
After all, it is in the chipset that a system is built in that allows you to adjust the current strength, due to which the process at the first stage is accelerated literally at times.
Therefore, it does not make sense to look for chargers with Quick Charge, as some inexperienced users try to do.
The only thing you should pay attention to when buying a memory for a smartphone that supports this technology will still be the same current strength: if it is insufficient, then the chipset will simply have nowhere to take it from.
It may also seem that such "outrage" over can be harmful. Indeed, the first generation of Quick Charge provided a lot to complain about.
However, starting from the second generation, the process has become absolutely safe, and in Qualcomm Quick Charge 3.0, in addition, the time during which the gadget is charged up to 50% has been significantly reduced.
Mobile chargers
You can charge your smartphone not only from the network. Absolute mobility involves the use of gadgets even in conditions when it is unavailable for a long time.
The most common device for such cases is a portable charger, or Power Bank. Depending on the capacity, it can have a variety of sizes and weights: from a small box a little more than a flash drive to a weighty “brick”.
The main problem of such devices is self-discharge during storage. With the advent of lithium-ion batteries, its sharpness has decreased, but still not completely. The solution was the use of solar-powered memory.
To charge the Power Bank with their help ... no, it will be possible, of course, if you use sufficiently large and expensive models. But usually such gizmos are used precisely to compensate for self-discharge.
A convenient case allows you to hang such a charge, for example, on a backpack and recharge the external battery from the sun while walking or cycling.
It is also worth mentioning that some smartphone models were originally designed to operate in Power Bank mode for other devices. To do this, they provide a very large battery and an appropriate interface.
In conclusion, it is worth noting that when buying a charger, it is advisable to consult with the manager, explaining to him for which particular gadget it is being purchased. Most large online stores offer this option when choosing products.
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