How To Fix A Lithium Battery That Won T Charge. Before blaming the battery make sure the charger is in perfect working order a simple test to do is to use a multi meter set to DC volts connected to the battery you do not state the voltage of the battery but with the charger running the voltage must be at least higher than the stated voltage of the battery remember that too high a charging voltage can damage the battery so the best would be to get the right specs for the battery you are charging. I show how to fix a DeWalt Flexvolt battery that wont charge even after the contacts are clean and Ive tried different chargers.
A charger that can detect battery chemistry is best to use. If so please allow the battery to cool then reinsert the battery on charger to try charging again. When charging lithium battery it will naturally expand but generally not more than 01 mm.
To float or not to float.
There is a special charger for lithium batteries. If the battery is not charging one of the best things you can do is check each of the exterior components of the charging system. If your battery is not charging and the charger is rapid flashing and the battery is warm it may be too hot- particularly after heavy or continued use. The best way to fix it is using an overvoltage-protected charger charge your bare lithium battery directly.
