Adata PV100 4200mAH Power Bank (Black)
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- 5 volts lithium-polymer battery with 4200mAH capacity
- Input:5V-1A (micro USB) and output: 5V-2.1A (Type-A USB)
- LED power indicator
- Protections from overcharging, over discharge, short circuit and over temperatue
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Description for Adata PV100 4200mAH Power Bank (Black)
You hate it when you run out of power for your electronic gadgets. The PV100 provides you with the power to keep your smartphone or tablet operating and connected. Portable and handy, it is the perfect accessory for those who embrace the modern mobile lifestyle.
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For calculating the 'ReaL Capacity' of power bank
Power bank capacity x 0.74x 0.85
For Ex:10000 mAh power bank.
10000x.74x.85 = 6290 mAh ( This will be average /standard output of 10000 mAh power bank ) assuming it to be 85% efficient!!!
10000x.74x..90= 6660 mAh ( .90 = 90% efficient .85 = 85%)
Very VERy few Power bank are 90% efficient ( Ex : Ravpower ) other power banks are 85% or below!!!
What is efficiency?
In simple terms, Layman terms , there are losses in transfer from one battery to another!!!! ( circuit losses ,, etc,,, )
So , in reality a 10000 mAh power bank will give below 6500 mAh capacity.
That means a Note 3 battery of 3000/3200 mah can be charged twice!!!
Or a ipad retina ( 6400 mAh odd ) can be charged fully once!!!
ihave ia1310 Boss 10000mAH Power Bank (Gold) / ( grey ) is giving 6000+ mAh output which is awesome!!!! ( their 90% effeciency claim is TRUE ) tested 2 ihave : Gold) / ( grey !!!
By the way it charges in 5 hrs using 2.1 amp ( sony charger ) tested it
Most android phones battery between 2000 - 3000 mAh
Most tablets battery between 3000-5000 ( 7-8 inch )
Most tablets battery between 6000 - 8000/10000 for (9-10 inch tablets )
So , now u know what capacity power bank u need to buy !!!
This Adata power bank gives 2.1 amp output which is gr*8 for sub 5000 mAh power bank.
(2.1 amp ) , the internal circuit / board & components have to be top class!!!
If u have/ own just a smartphone to charge , this will do the job perfectly! , I mean this capacity from a good brand !!!
4200 mah power bank will give 2641 mAh ( approx @ 85% efficiency )
As most smartphones have batteries between 2500-3000 mah , it will get the job done!!!
Also as it supports faster 2.1 amp output ,, it will charge ur high end !!phones which support 2.1 ( easy way to check : check ur Company battery charger/ adapter ,, it will b printed on it in small fine print )