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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.

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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...

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fwjs28

8 years ago

The third is porlly for the ground...