I was out hanging drywall in my garage when my Black and Decker Firestorm 14.4v charger or drill failed.
From what I've read, the chargers are a bit flaky but then maybe the drill died. I had a brain storm, I have a Tenma variable power supply that I can set to limit current. That seems like a battery charger to me.
So I set it to 14.4v open volts, 2.0A current. Atm I'm putting 12 volts into it and after a few minutes, I could get the drill to work so the pack is charging and the drill works.
So what strategy do I use to charge this? I figure I have to go above 14.4v, I've read that the 1.2v cells need to be taken to 1.45v for full charging. Since I'm not checking temperature, I'm worried about just setting 17.4 volts and walking away.
Thanks in advance.
Wes