Welcome • User Guide
ToS • Privacy • Canary
Donate • Bugs • License

©2025 Poal.co

1.4K

I'm trying to test some 18v batteries. Need to know which holes to put leads into and where to set the knob.

Don't tell me to GTS. I'd rather get human advice.

I'm trying to test some 18v batteries. Need to know which holes to put leads into and where to set the knob. Don't tell me to GTS. I'd rather get human advice. [Link Title](https://pic8.co/sh/HK6sUW.jpg)

(post is archived)

You are currently inside a comment thread.
Click here to see all the comments (22).
[–] • 2 pts

I think I've seen the same video. If I recall correctly, the guy says "jumpstart" for lack of a better term. He explained that the charger won't "see" the battery if it's completely drained. So you might have a battery that is still functional but the charger can't "see" it.

I'm way out of my ballpark here, but my layman's understanding is that he put the dead battery into a circuit with a charged battery until it had enough charge to be "seen" by the charger.

You seem to be knowledgeable in this regard. Does that have any merit?

[–] • 0 pt (edited )

Weird, I was trying to revive a few Dewalt's I have last few days. 8/10 charged up, 2 have dead cells, can only charge to 30% or so.

I had to do a +/+ -/- good to bad battery on 6 of them to get enough juice in there to get them going.