An easy fix for a battery that wont charge. Why the battery of an electric screwdriver does not charge. Make sure you follow the battery manufacturers instructions in this regard.
Shut down your laptop unplug the charger and remove the battery.
It could be quite dangerous. First you need a battery that is fresh and holds a charge. Make sure you follow the battery manufacturers instructions in this regard. Depending on your battery pack size a deep cycle battery needs 12-48 hours of charging.