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Power Bank Xiaomi 20800 mAh provides up to 6 full charges phone or to 2 full charges tablet.
JBL Charge 2+
JBL Charge 3 (waterproof)
JBL Pulse 3
Mi Power Bank 10400 mAh199 грн. Buy
Mi Power Bank 12000 mAh
Mi Power Bank 16000 mAh299 грн. Buy
Mi Power Bank 20800 mAh
Solar Power Bank 5000 mAh250 грн. Buy
What is poverbank (Power Bank)?
- capacity of batteries used (their quality, type);
- casing design;
- materials used;
- The number of connectors;
- complete set.
How to choose poverbank ( POWERBANK )?
Why do I need an external battery (Power Bank)
How many times have enough charge
When selecting an external battery, most guided by a simple formula - divides universal battery capacity on the capacity of your device's battery and considers, that is how much time they will be able to charge your device.
In fact it is not so, no Power Bank on 9000 mAh battery will not charge a smartphone battery with three times 3000 mAh, at best, it will charge half, and most - one.
Why? There are several reasons.
Always there is minimal battery self-discharge, and over time its characteristics gradually deteriorate. Voltage batteries used in external batteries anyway 3,7 AT, depending upon the level of charge at the moment it is changed in a large, and in the smaller side.
Standard USB output voltage, chargers and respectively, Power Bank – 5 AT, so it's worth a special scheme within the device, which increases the voltage to the required level.
She has her own efficiency (efficiency), which can be very different for different models of batteries. Similar, but in the step-down circuit should charge the device.
It turns out, that at each stage of some of the energy is lost, so no external battery can not provide one hundred percent out of its container, you should always choose "with reserve" in 20-30%.
For all occasions
think, that attention should be given only the most capacious model? It is not always so.
Of course, a battery charge all your gadgets without problems, and even friends can help, Now only have to carry it in a bag or in the outside pocket of outerwear.
Sometimes you just need to recharge the battery further, just to "hang on" to the house and a normal charge. In such situations, you can pay attention to the compact models.
Usually, They are much smaller and lighter than their older counterparts, some can be worn as a pendant on the keys. This baby always included and will not interfere, but will add, eg, half of charge sevshemu smartphone.
Excellent example of, What can be battery MI 12000, lightweight and compact.
there are models, provided in a cover shape for smartphone. Universal will not name, because each battery is made for a specific smartphone, but this way you can kill two birds with one stone - and a cover for your smartphone to get, and the work to improve. The only negative point - a marked increase in the size of the Assistant.