Its not just the smaller batteries either.
I have a little used Black & Decker drill that has 2 bad batteries.
Bought a new charger just before they crapped out.
I noticed my son was throwing out a fairly expensive hand held spot light. One of those million candlepower jobs. He said he never really used it much. I thought I would try to salvage it and found that after charging in my trucks cigarette lighter for 10 hours it only charged to 6 volts.
Bad Batteries
the best 2ya
just