Hi, just a quick question that someone will probably know the answer to.
How do you recover a 'stuck' battery? By this I mean one which has been out of use for a while, shows no charge or partial charge on a test meter, and when put into a phone and the charger is plugged in, there is no beep and charging doesn't start.
Often there is a faint electrical hum from the phone, as though the battery was resisting the charge, so I never leave it that way for long in case it causes damage.
Anyone got any info on this one? Thanks for any comments.