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princelake 11-21-2013 07:52 PM

reviving dead 18 lithum ion batteries
i have 3 18v ridgid batteries that no longer hold a charge and they do the death flash on the charger. i wasnt to bright and didnt fill out the lifetime warranty 4-5years ago. where can i order new cells for these batteries?

woodworkbykirk 11-22-2013 02:48 PM

just buy new batteries.. ive heard horror stories of guys trying to rebuild their batteries themself only to have the tool catch on fire because they dont know what their doing.. if its an older drill chances are you wont even be able to get those batteries anymore

PoleCat 11-22-2013 04:27 PM

I looked into rebuilding my Ryobi batteries. Cost twice as much as buying a new battery.:eek:

princelake 11-22-2013 07:26 PM

the 3 batteries are the ridgid X3 batteries. i went and just bought a impact/drill kit with a radio and 2 batteries and i bought a 3rd 2.0ah battery so im back up to 3 batteries. i was hoping to rebuild the old batteries so i have 6 but mehhh maybe i'll just by a few more

Gary in WA 11-22-2013 10:29 PM


Larryh86GT 11-23-2013 07:05 AM


Originally Posted by gtortuga (Post 773770)
I have done this many times (5) or more and it has worked every time.
Take your ni-cad (only) battery pack and determine polarity of each contact surface.

Then, (I use a 12v car battery charger as a hi voltage DC device) using the same polarity + to + and - to -, briefly touch (1 second at a time) both contact surfaces of your battery pack. It will spark a little.

That's it! Simple and effective. Your battery pack should show good voltage and hold a charge now.

Note; some battery packs are too far gone to be revived by this method but it works most of the time. Cheap too! You have just burned off the small crystalline connections that have formed inside your ni-cad battery that had effectively shorted it out. Burning off these "dendrites" revives your battery.

This sounds like a good way to cook your battery.

toolaholic 11-23-2013 11:47 PM


Originally Posted by Larryh86GT
This sounds like a good way to cook your battery.

. It works. I have done it.

Larryh86GT 11-24-2013 07:18 AM

Interesting. It might be worth a try.

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