I was trying to bring back an old DeWalt battery that wouldn't charge by using a jump-start method with a new battery. Mistakenly, I crossed the wires and shorted it out. Now, my good battery won't charge either. Does anyone have suggestions on how to fix this situation?
2 Answers
Sounds like you probably burnt out some fusible links in the battery. When you tried to jump start it instead of using a multimeter or the proper charger, that’s a recipe for disaster. If you don't have spot welding gear or nickel strip, you might be out of luck.
You should definitely take that battery to a recycling center before it causes a fire hazard. Honestly, I can’t believe some folks still try the jump-start technique; it's like playing with fire for a pricey battery.
I doubt it’ll actually burn your house down, but yeah, trying to revive a battery this way isn’t the smartest move. It often costs less to just buy a new battery than to buy all the gear needed to do it right.