Power Bank enclosures with replaceable batteries 18650. What batteries are used in the bank. Select Power Bank or portable charger. Where to get lithium batteries

Situations can be in life all sorts of - empty smartphone battery and the lack of a power outlet for recharging nearby - frequent business. That is why it was decided to make your own, powerful turning bank from the old laptop battery, with USB power. Of course you can buy Chinese, but their 10,000 and 20,000 MA is a great exaggeration! This article will show you how to collect a device consisting of a lithium battery charging module that increases the converter for USB, as well as a LED state indicator battery Power Bank.

Where to get lithium batteries

The batteries themselves are better not to buy (expensive and the weak things come across) and use from the old laptop. Inside this, that in the photo - 3 packs of two parallel assemblies of lithium 18650 types by 2200 mA / h, which are connected sequentially.

In our design, we will use all 3 packages in parallel, after conducting a check, whether they keep the charge for quite a long time.

As a last resort, if some banks are already very weak, put one double package - then the plibs will become easier and less, albeit weaker.

Modules Pelo Bank

The next important part of the USB PowerBank is charging board. This is cheap for this. Additionally, it turns off the load if the voltage of lithium batteries falls below ~ 3.7 volts, thereby protecting rechargeable battery From deep discharge.

Now take a scheme that increases the voltage from batteries to 5 volts (to power the USB output). This is any boost converter to USB.

How to combine each other -. Naturally schematic scheme will have a small toggle switch to turn on the Power Bank. The toggle switch is needed, since an increase in the transducer always receives power from the battery (and pulls a small current), even if no device is connected to the USB.

Case for homemade Power Bank

The case is better to take a non-metallic - a suitable plastic box, a channel cable and so on. For this project used non-standard and eco-friendly material - a tree, more precisely. Two covers and walls around the perimeter, all this is connected by screws.

Product is provided free of charge for review Chinabuye.com
Smartphone discharged, and there is no socket nearby? This situation is quite frequent, because modern smartphones are very "voracious" and quickly sit, if they use them quite actively. In such an unpleasant situation, the so-called "Power Bank" can come to the rescue, or in a simple - portable charging. About one of such charging that uses 2 batteries of type 18650 in its composition - this review.

If someone else is "not in the know," I will tell you what Power Bank is.
In fact, it is a battery, but it is not created to feed some specific device, and to give your energy to others. Power Bank needs to be charged in advance, and only then to charge almost any devices providing for the possibility of charging through a USB cable.

Now I will tell you a little about why the "Mobile Charging" on the Batteries of the 18650 format is most practical. The fact is that buying such charging only on the principle of "more Mah + less size" can never be hoped for the manufacturer's honesty and as a result, such a device, most often, will soon cease to keep charge and will be thrown into the trash, because Pick up and replace the battery in it will be almost impossible because of its uniqueness.

The solution to this problem is to use charging, power sources in which the batteries of a standard, generally accepted type 18650 perform. Such batteries today can be purchased separately and for example, extract the laptop battery from the failed.
In this case, most often the cause of the malfunction is the battery controller, while the "banks" of 18650 turn out to be quite efficient and at the same time they are advantageous from purchased separately by their quality, since Only high-quality capacious batteries are used in laptops.

So, hero this review It is a device designed to work with two batteries of type 18650 and, by the way, equipped with them initially by the manufacturer.

Specifications:
- Input Voltage (INPUT): 5V 1A
- output voltage (Output): 5V 1A
- declared capacity: 5200 Mah
- Actual age: 3600 Mah
- Dimensions: 46 x 96 x 23 mm

As you can see, the characteristics are quite mediocre, but here I want to focus on the tank of the device. Has repeatedly noticed that many chinese manufacturers With reluctance, but still begin to show the real capacity of their batteries. In this case, the manufacturer emphasizes that the loud sign of 5,200 mAh corresponds to the real 3600 mAh. This, by the way, we will check further ...

Supplied device here in such a box placed in a rigid plastic frame

Delivery set: Device itself, 2x18650 battery and short microusb-USB cable

Batteries, judging by the form, belong to the well-known and widespread Chinese brand "Noname"))

Weight - not to say that small, but also nothing talking about a large capacity

The device-box itself looks quite attractive.
The on / off button is located in front, as well as the three battery status indication LED. Rear are brief TTX

Two connectors are located on the top odder:
- Full USB - to connect the device you need to recharge
- microUSB - for connecting external source Power and battery charging

In order to push the battery compartment, you need to keep it over a white case to prescribe to the bottom gray

Weight device without batteries

Batteries are inserted into spring-loaded contacts on the principle of conventional finger batteries.

Weight device with inserted batteries

Apparently, the manufacturer did not set itself the tasks of making a big secret from the electronics of the device, so if necessary, it is possible to disassemble it enough, unscrewing only a few screws

To charge any device, such as a smartphone, it must be connected using a cable button and press a single button

At the same time, the current charge of the battery will be displayed using blue LEDs.

Posstanding the problem of checking the battery capacity at home, together with the Overview of Power Bank, it was ordered here such a household USB tester, no one claims, however, to the title of professional, but nevertheless, quite suitable, judging by the reviews for Use at home ...

The device is connected by "into the gap" of the line for which charging is carried out and during the entire process fixes the necessary values \u200b\u200bof the current passing through it, voltage, and also calculates the capacitance of the charged device.

This device has three connectors: USB - output, microUSB - input, USB tail, as well as a multifunction control button to switch and erase memory cells.

The device screen is capable of displaying the following information: voltage, current, consumed capacity, as well as the current memory cell number.
In total, the device provides 10 cells (0-9) non-volatile memory, in which the measured container is stored, it is saved even after shutdown.

As mentioned above, one single button is intended for control.
To go to the mode of memory cells, you need to make two short press, after which the screen will flash and each short press will follow the transition to the next memory cell. Exit mode - repeated two short pressing.

With a long holding button (about 3-5 seconds), it is resetting the memory cell value following the one on which you are now. Those. If you need to reset the 1st cell, then you need to become zero and detect a long retention of the button (first it was strange - then I got used to).
The presence of several memory cells can be useful, for example, if you need to test multiple devices or one, but in different modes, and then compare the obtained indicators

After full discharge, Power Bank was delivered to charging through this tester and that's what happened in the end

It can be noted that the resulting container is practically converged with a honestly declared 3600 mAh. Why "practically"? Because still the testimony of the tester is not fairly accurate due to the characteristics of the process of measuring the capacity, because It is still possible to measure the measurements during the discharge, and not charging the battery. In this regard, judging by the reviews, the testimony of the tester may differ from the true approximately 100-300 mAh in one direction or another.

Here for example, measuring the capacity of the battery of the smartphone with the claimed value of 3000 mAh.

In conclusion, I will say that in general this mobile charging Well suited as a backup power supply, well, if the estimated time of stay away from the outlet promises to be quite long, you can always take with you about the supply of several charged batteries 18650 and change them in charging as needed.

Thanks for attention.

Smartphone discharged, and there is no socket nearby? The situation is frequent - modern smartphones quickly sit, if you use them to the entire coil. Here comes to the rescue portable charging! But how to make the right choice so as not to stay without communication and entertainment? Let's show you that I chose and with what problems I encountered in the end.

By tradition, first a little theory.

Now the most popular power source is a lithium battery. They are everywhere - in phones, cameras, laptops ... Even in disposable electronic cigarettes there is a rechargeable lithium battery.

The most common format for lithium is 18650 (18 * 650 mm). Such "banks" is used in most laptop batteries.
Well, once laptops are one of the most running goods in the world, manufacturers seek to improve this type of batteries.
What makes the 18650 ideal option for use in lanterns, electronic cigarettes and portable charging.

Lithium batteries have their drawbacks - they do not like if they are very difficult to discharge and deteriorate with uncontrolled charging. Therefore, in regular stores you will not find "naked" lithium batteries, they are embedded in devices or sold along with charge / discharge controller. But no one prevents you from finding your laptop battery and pull out batteries from it. Their condition may be distant from the ideal, but Halyava.

It would seem, where are the batteries from laptops, if portable charging is sold ready and often unintended? It is enough to dial in the search for cherished words - and here they, die with bright colors:

Faceless brains. The usual buyer, of course, never disaster charging and does not think about replacing the batteries. Therefore, the manufacturer can shove anything - from Chinese low-quality batteries to the same used laptops. But even if there are high-quality batteries in Power Bank, they are not eternal - a couple of years and in the garbage. Therefore, the possibility of replacing the power source is simply necessary, otherwise the device may be "disposable". Try to find such a replacement battery:

I used to take everything in China, I recommend and you - we do not find normal things for a reasonable price. From the moment of review, my past for more than two years, during which time I ordered dozens chinese products, visited many sites. There were cases of deception, there were a very large delivery time. Most liked for very fast delivery and many options free shipping. There I have acquired several charged charging.

All of them have the ability to replace the battery and, which is important, supplied "empty", that is, the batteries are purchased separately.

Familiar to all lovers of Lanterns ML-102 is very easy to use. It is enough to insert the battery and ... everything. There are no buttons or charge level indicators. I connected the phone via USB - I went charge, connected by MicroUSB to the PC - charging the battery itself. The stated current limit - 1.2a

Blue LED shows current USB current consumption. The brighter, the more voracious device is connected.

Red replaces green after full charge Battery

The insides are just as simple as the charging itself:

We connect the consumer to 1a and see that charging perfectly copes:

With a discharged battery, charging until the latter is trying to produce the requested current, then flies:

My conclusion: Best Charging at 1 * 18650. Extremely simple and therefore convenient. Due to the independence of the circuits and transformation schemes, it is possible to charge it at the same time, and connect something to it. But if you have a fully discharged smartphone, "squeeze the latest juices" from charging will not be able to give the right current and cut off.

Of the minuses - is not designed for protected batteries. They simply do not climb there, although some people manage to shove them into it, modifying the design with a knife and a file. No charge level indicator. Constantly enabled and is in standby mode (blue diode is noticeable, but glows).

This charging is already bigger, three batteries are closed in it. In some versions there is a built-in flashlight (shines really good). There is a button and charge indicator. When used, the indicator flashes in red / green / yellow, when charging internal batteries, first flashes red, then orange, then green - depending on the level of charge. Announced current in 1a

Inside, everything is not very good - there is no cooling at the LED, some details are not removal. In the photo details from the versions with a flashlight and without:

At the moment, I do not have a similar charging on my hands, because the tests will not see.

From the conclusion - I did not really like it. Although B. this device And three batteries, all three channels independent! It is good in terms of the fact that batteries will not affect each other, but it is bad that at the same time the energy is taken only from one of them. If none is able to give the requested current, the device turns off. In parallel, the connected batteries could have "common efforts" to give the necessary current.

What do you like - it is convenient to change batteries. Removed the lid, changed the battery and ready. It is really convenient, there are special excavations for extracting. Places a lot are placed and protected batteries, soft springs, are inserted without difficulty.

Also, when used, the indicator is simply blinking. It is impossible to find out the charge level without turning off the charging device. Power supply is stopped immediately after turning off the cable, there is no delay. Yes, and turn off the charging during work is impossible.

Also on three batteries, but not a triangular shape, but flat. Instead of a tricolor indicator - four blue LEDs. But here are already two USB ports, on 1a and 2.1a. When used, once in 5 seconds the current charge level is displayed. When charging, the charge level is also visible.

It keeps everything on the screws, disassembled uncomfortable. And it is also difficult to collect, the springs are lying to push the cap:

Also copes with consumption in 1a (supports 2.1 A, but I did not find anything that he eats so much):

And just also turns off if you connect a voracious device at a small charge level:

and then instantly cut off

The result is a good charge for 3 * 18650, maybe one of the best. Fully metallic case. The button is recessed so as not to be pressed randomly. All batteries are in parallel, due to which the efficiency of work increases. Can give a larger current, so it has two USB portOne of which is 2.1 A. Indicators work and when used, and when charging from the network.

Of the minuses - it should also be turned off by a button, button only for switching on. It turns off itself, after 10 seconds inactivity. Already mentioned the inability to quickly shift batteries and not particularly convenient assembly with screws.

Also on 1 battery, like ML-102. It has a button, 5 indicators, supports "special" mode for iPhone. Included adapters for various phones and flashlight. There are no specifications for the output current.

Alas, I could not disassemble her, so I will not see the insides. Plastic floods very hard.

In the same conditions, charging was able to issue only 0.66a as usual and 0.87 in a special (which for iPhone):

The special mode is activated only for a couple of minutes, so do not excuse high values

What is interesting, can work and with a highly discharged battery (perhaps, after this by voltage):

This is observed only in "special" mode, but for emergency cases!

Summing up: collected on conscience, it has been working for two years. The standard cable was poor quality, fed a new one. Charging is leopard, but more efficient - will work until the end, limiting the outputted current. The only one of the observers, which can be turned off with the button while working!

Of the minuses - only one USB connector. Through it, there is a charging from the network. So without a special cable (USB - USB), it will not be charged.

What can be concluded from the considered options? Universal things do not exist. To each his own. It is more convenient for me to throw in the Power Bank backpack for 1 * 18650 and several batteries. Someone is more convenient to Ruinovo - spinled screws and forgot until you have to change the battery. In general, I told you all possible problems when choosing portable charging - Do not erase.

But one moment I missed. Batteries! Not from laptops to pull them out? After all, they need high-quality, so that there is enough such charging for a long time. And the Chinese are lying to slip cheap under the guise of a normal battery:

First of all, remember - there are no 18650 batteries with a capacity of more than 3400 mAh. Yes, and they are achieved only on non-standard modes of operation (which are not in the standard Power Bank). Standard capacity 2200 mAh, more quality - 2600 Mahu

Still, you should not take Chinese brands (Ultrafire, TrustFire, Fandyfire ... *** Fire) - not to understand where the original, and where is the fake, you can run into batteries with a capacity of 1000 mAh and even 250 mAh instead of the specified 2600. (see photo above )

If I want to save, pay attention to the signatures about the real capacity of batteries on the site:

If a real capacity is less than 2200 mAh - it is better not to take. It is not worth it.

Interested in other things? Write in the comments! Perhaps it is your topic that I will choose for review next time.

Hello everyone. Today we will talk about a fairly well-known device. Twenty-first century - century of information technology. Portable devices that constantly lack nutrition. Especially smartphones based on the Android operating system, very voracious, one browser only uses about 80% of the battery capacity of the smartphone. And, as you know, the Internet is now used very often. It is even better to say - constantly! See the weather, the dollar rate, answer messages to the social network, check the kidney, order a pizza to work, order a taxi, book a place in the hotel is far from full list Purpose of a smartphone as an intermediary between the user and the Internet. In such cases, far from the outlet will not be able to. And if there is no access to the outlet ...

In general, where is the problem, there is a solution to the problem, and in this case it was proposed to assemble a portable charger, it is the same external battery, it is PowerBank (Delibank).

A kind of portable charging to replenish the battery reserves of your smartphone.

What is Power Bank?

Translated into Russian Power Bank is a bank energy. That is, an array of batteries collected in one case. There are several writing of this word PowerBank and Power Bank, as well as external battery for smartphone / tablet, mobile battery and autonomous charger .

If you completely simplify, then Power Bank is a socket in your pocket.

What is needed by Power Bank?

Housing external charger It has a universal output (USB) and input (most often microusb). This means that from Power Bank you can drink with energy everything that connects via USB, ranging from smartphones, tablets, navigators and players, ending with consoles and racing.

There is a huge selection of Power Bank today on the market today different firms, capacity, design, sizes, reliability. How to choose what you need?

How to choose Power Bank?

Just as before buying something, you first ask yourself: " Why do I need Power Bank?».

If you are going on a long journey and a socket "doesn't shine" for several days, then you should look at cream batteries from 15.000mAh to 20.000mAh, such as . In addition to the container, Pineng has a huge mass of advantages, more on which you can read.

And perhaps you wander around the city all day, show the presentation from the tablet, you have a million calls and there is no time to sit in a cafe at all, recharge your gadget. Then you are suitable elegant or . You know, these two Power Bank 'and not ashamed to put next to the iPhone as they both possess the same stylish design.

But not only the power should be paid attention. Also, an important difference external batteries is the number USB outputs. Agree, there is a difference - or you charge one smartphone, or you charge and smartphone and tablet. And each of the gadgets is sewn with the energy of the strength that it is recommended. This feature is in all Pineng presented in our store.

It is also worth paying attention to the presence of a LED-lantern, this pleasant bonus can hardly come in handy. This is not just a flashlight, but a flashlight on powerful batteries, So shum will be long.

If you have any questions -! We will be happy!

And even if you do not understand anything in millions and other things, you can simply tell you about your tasks for Power Bank, and we will help you with a choice!

Select Power Bank or USB Catalog Tester

Let any please mean a lot about what is the magical Power Bank gives the characteristics indicated on the packaging, but the most accurate thing is that you can collect yourself. Armed with this particular thought, I ordered a separate Power Bank building and already known for its quality. I ordered, and when it came, began my "research". Briefly, it is the best that you can buy, accurate and reliable.
The housing came in the package.
The set is a bank and cord for charging. The plug of this cord is ideal for routers, with the help of this particular cable, I wasted the router with Yota from Pauner Bank, so that a fairly common connector, and as a plus there is always a backup battery to the router in case of light shutdown.

At first reviewed the bank, I was in amazement, since when the order had to be indicators, there were a box on the box, and in front of me a solid monoton case with the power button.

Looked in the lower part, there are specifications.

2a for 2 USB ports are quite good parameters. By connecting the same power, the indicators were miraculously manifested.
In front, we see 2 USB ports and port for charging the cable from the kit.


I connected in it, not only me, batteries with Sanyo protection. Their tests were held here many times and I will not spend your time on it. It looks like this.

The insides look very presentable, nothing superfluous, everything is high quality and neat. That is, we have a bank for 4 batteries with protection, by the way, you can use the usual, without protection, batteries, but I prefer not to save on it. I use the same batteries not by chance, if you need performance, this is how it can be achieved. Weight with 4 batteries is 298 grams. Each battery is almost 2600 mAh, that is, we have 10400 mAh, it is rounded this value, taking into account the current conversion and get a bank per 10,000 mAh, perfectly honest with minimal weight and maximum compactness and efficiency. That's exactly this Power Bank I recommend completely to everyone, I myself use for travel and in domestic situations, and hardly something will be able to compare. Thank you.

P.S. The meaning of the review how to collect something is yours, then what can really rely on, without disputes in forums and measuring equipment, having obviously good batteries and simple and reliable housing.