Problem was- Hitachi SDS 24v drill battery not charging. Charger flashing "duff Battery"and only 18v on battery.
Solution- 12v car battery charger/booster, dab on + to +, - to -, with charger set to max. slight spark, hold on for 20 to 30 secs. transfer battery to it's own charger.
30 mins later, fully charged, reads 26v . problem solved.
This will probably work on 18v and 12v, but be careful not to cook it!
Solution- 12v car battery charger/booster, dab on + to +, - to -, with charger set to max. slight spark, hold on for 20 to 30 secs. transfer battery to it's own charger.
30 mins later, fully charged, reads 26v . problem solved.
This will probably work on 18v and 12v, but be careful not to cook it!
