Black and Decker 20 volt Battery wont charge
I have 2 Black & Decker 20 volt "Matrix" batteries.
During another household project, I used the battery as a power supply for something else. Low draw, was not getting hot. Discharged down to 17 volts. Now when I plug it in, charger just shows "bad battery".
Another just shows "bad battery" on the charger when I plug it in. It's practically new but I have no insight on that one.
Anyone familiar with how these opperate that might have a fix at least for the first one? My suspision is that somehow the battery knows it was used for something it should not have been. If that's the case...can it be reset?
Same problem with older 18 volt "Firestorm" battery. This could be age...but every battery (3) shows bad?