243Views2Replies

Author Options:

Home made charger for a cordless. screwdriver.?How do i connect 2wire charger to 3 prongs on batt. Answered

Blk & dec vpx 7 vdc cordless screwdriver.Missing charger,not available anymore.Batt. has 3 prongs for charger.

2 Replies

user
orksecurity (author)2009-07-28

Generally you don't have grounds on low-voltage connections... I would suspect that the third wire is for a monitoring circuit so you don't overcharge the battery. If so, this may be absolutely essential -- NiMH and Lithium batteries in particular can be Significantly Dangerous if you abuse them. Given how cheap these tools are, I'd get another and disassemble this one for parts, but...

Select as Best AnswerUndo Best Answer

user
fwjs28 (author)2009-07-28

The third is porlly for the ground...

Select as Best AnswerUndo Best Answer