Angle grinder battery won't charge?
7/17/2026 10:19:00 AM
#1
WoodWorkerWill682
New Member
Posts: 0
Hey guys, my Makita 18V grinder battery stopped charging after I dropped it a few feet. The charger shows green like it's full but the tool doesn't run. Any ideas? I already tried cleaning the contacts.
7/17/2026 10:44:00 AM
#2
ToolTimeTim43
Member
Posts: 0
Classic drop damage. Probably a broken internal connection. Pop the case open and check for loose wires. If not, the BMS board might be fried.
7/17/2026 12:13:00 PM
#3
PowerToolPete804
New Member
Posts: 0
I had a similar issue with a DeWalt battery. Turned out one of the cells was out of balance. Try leaving it on the charger for a few hours, see if it balances itself.
7/17/2026 4:28:00 PM
#4
LevelLarry571
New Member
Posts: 0
Don't waste time. If it's dropped, the cell tabs can break. Cut your losses and buy a new battery. Not worth the fire risk from a DIY repair if you don't know what you're doing.
7/17/2026 1:39:00 PM
#5
WoodWorkerWill682
New Member
Posts: 0
Thanks all. I'll pop it open but if it looks sketchy I'll just get a new one. Appreciate the input!
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