Quote:
Originally Posted by happysnapper22
Lithium batteries can be reluctant to charge if run down completely or left discharged for a long time. Sometimes they can be 'woken up' by charging with a USB battery power bank type device rather than a mains charger even then might take couple of hours to get it going. If it works once battery is at 20% or so revert to mains charger if desired.
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Likely makes no difference on any Kindle with a 4 pin cell connector, i.e. a controller in the cell pack.
There is a fire / explosion risk charging a totally flat lithium cell which is why the "empty" symbol isn't meaning really flat. Devices turn off when the battery is too low and generally won't charge at all if the battery is really flat or too flat. Manually charging a "naked" pouch or cylindrical cell is a good way to cause a fire or explosion. Also no Lithium cell is trickle charged when full, as that also is dangerous. The charger will pulse on and off as the battery/cell discharges.