Reverse charging, which damages batteries, is when a rechargeable battery is recharged with its polarity reversed. Reverse charging can occur under a number of circumstances, the two most important being:
When a battery is incorrectly inserted into a charger.
When multiple batteries are used in series in a device. When one battery completely discharges ahead of the rest, the other batteries in series may force the discharged battery to discharge to below zero voltage.
can we recharge an mp3 player which is to be connected to an USB port of a pc by using a charger of...
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can we recharge an mp3 player which is to be connected to an USB port of a pc by using a charger of any different voltage output? if we can are there any long term bad effects like battery explosion?