Quote:
Originally Posted by compurandom
I've had a bad cable actually cause the battery to be drained instead of charging it. Not quite sure how that works but...
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It's called back draining. The most common occurrence is charging something using a laptop USB and the laptop goes to sleep and the charging switches directions and the battery drains. This is why new laptops these days have one port that can be set not to turn off when charging when the laptop goes to sleep.