NiCd batteries

[TOOLTIME]

One of my batteries on my drill died and I try this and it worked. Try at own risk and good luck!

http://search.yahoo.com/r/_ylt=A0oG.../**http://www.youtube.com/watch?v=1e8hHLyXAyQ

 

[NSX3tek]

Thanks. I also have a dead battery on one of my drill and will try this out.

I haven't read it in depth, but what is the risk that you're heeding?:biggrin:

 

[Hapa88]

Embed is your friend:
<iframe width="560" height="315" src="http://www.youtube.com/embed/1e8hHLyXAyQ" frameborder="0" allowfullscreen></iframe>

 

[ChrisK]

Embed is your friend:
<iframe width="560" height="315" src="http://www.youtube.com/embed/1e8hHLyXAyQ" frameborder="0" allowfullscreen></iframe>

My dad taught me a similar trick when I was young about 25 or so years ago. He used to call it shocking the nicad battery back to life. I/We have saved many nicads batteries that way. Only difference is we had a variable voltage power supply to use and we didn't tap it 6 or so times, but just held the high voltage on the terminal for about 1 second. Then measured the dead batteries. If the voltage moved from negative to positive then it was good to charge. If it was still negative, we'd zap it again for about a second and measure again. Anyway, I'm over nicads already. Lithium all the way. LOL

 

[pgilliam1]

One question: Is the idea to double the voltage you apply to the dead NiCad (some of my older batteries are 9.5vdc) or does it take a full 36VDC to shock it back to life no matter the voltage stated on the dead battery?

 

[TOOLTIME]

At least double the voltage.