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Fixing a defective 18 volt lithium battery

Posted By: Stump jumper

Fixing a defective 18 volt lithium battery - 03/15/22 09:16 PM

I had one that tested defective on the charger. While looking for a replacement I ran across a You Tube video explaining how to bring one back to life. I took it apart and tested the voltage at the cell and it had 16 volts. Put the plastic cover back on it is charging. I had tested the battery with the charger several times. I did not get to try the recovery procedure I saw on You Tube.
Posted By: COFF

Re: Fixing a defective 18 volt lithium battery - 03/15/22 11:46 PM

Can you post a link to that youtube video? If it works I'd be interested to see it.
Posted By: hopalong

Re: Fixing a defective 18 volt lithium battery - 03/16/22 12:42 AM

batteries plus used to rebuild them pretty cheap too, I had good luck with the few they did for me.
Posted By: BThomas

Re: Fixing a defective 18 volt lithium battery - 03/16/22 02:30 AM

Originally Posted by COFF
Can you post a link to that youtube video? If it works I'd be interested to see it.



https://www.youtube.com/watch?v=bmA8ukBJU9o&t=140s

https://www.youtube.com/watch?v=kUsNnUFKbZA&t=44s

Embedding is not working for some reason.
Posted By: RedRanger

Re: Fixing a defective 18 volt lithium battery - 03/20/22 01:54 PM

Is it a Dewalt Batter? I went Milwaukee I got tired of the Dewalt batteries always dying.
Posted By: SoonerDG

Re: Fixing a defective 18 volt lithium battery - 04/08/22 03:53 PM

The issue a lot of times is that the battery does not have enough of a charge for the charger to recognize it. You can sometimes jump them back to life. I've tried the fix on youtube and it worked for one battery but not for another.
Posted By: RedRanger

Re: Fixing a defective 18 volt lithium battery - 04/08/22 08:31 PM

Team Red

[Linked Image]
Posted By: hopalong

Re: Fixing a defective 18 volt lithium battery - 04/09/22 10:30 AM

Originally Posted by RedRanger
Team Red

[Linked Image]



been on a few jobsites that it would have been nice to have one of those in the tool belt.
Posted By: bradnitro175

Re: Fixing a defective 18 volt lithium battery - 04/29/22 02:38 PM

That's badarse
Posted By: Emit R Detsaw

Re: Fixing a defective 18 volt lithium battery - 04/30/22 01:55 PM

I have used my trickle charger on my Kobalt battery before. Kobalt batteries are notorious for draining/not working if you leave them in the charger past their recharge state.
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