WH, AH , V
I would like to understand how to read those numbers and see how many times a power bank charger can recharge my phone or laptop.
In: 0
V (Volts) – the power bank “V” out and the device “V” in must match. Usually at 5 volts.
A (Ampere) – it is written on both the power bank and the device.
AH (Ampere-hour) – the power bank “AH” means that it can pretty much deliver the “A” written on it for an ‘hour’ at its “V” rating.
Your device battery also have its “AH” rating. Just divide the power bank “AH” by the device’s “AH” rating to get how many times you can charge it.
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