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Forum topic by shipwright posted 10-25-2010 05:33 AM 1579 views 0 times favorited 13 replies Add to Favorites Watch
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8128 posts in 2967 days

10-25-2010 05:33 AM

Has anybody tried the miracle cure for dead Ni-Cad batteries offered on eBay: ?
If it’s this easy why isn’t everybody doing it? How can they keep the secret and sell the “simple process”?
My curiosity is piqued.

Paul M

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese!

13 replies so far

View Dan's profile


3630 posts in 3050 days

#1 posted 10-25-2010 05:41 AM

I have seen that on ebay. I have 4 dead batteries, two of which only lasted a few months. I did a lot of searching online and couldn’t find any real direction on how to repair them.

-- Dan - "Collector of Hand Planes"

View treeman's profile


208 posts in 3619 days

#2 posted 10-25-2010 11:56 AM

I have used the method to revive dead ni-cad battery packs and it worked for me. I posted it here .

View Schwieb's profile


1871 posts in 3631 days

#3 posted 10-25-2010 12:22 PM

If it works I’d sure like to know too.

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

View shipwright's profile


8128 posts in 2967 days

#4 posted 10-25-2010 05:43 PM

Thanks treeman. That site you referred me to looks strangely familiar. I’ll be trying the fix today, I knew if there was anything to it, it would be “out there” somewhere. I guess the seller on eBay is just hoping that not everyone looks very hard.

Thanks again

Paul M

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese!

View NathanAllen's profile


376 posts in 3314 days

#5 posted 10-25-2010 06:16 PM

I remember seeing the exact procedure they’re selling not too long ago. It has to do with connecting the battery to a source that is 2x the voltage requirement to clear out the deposits and re-align the flow along the plates. Requires a bridge between the battery and the source and a volt-meter to verify you don’t have any bad cells along the line.

I’m sure you can google up a free version that should help you, check for key words like volt-meter, replacing cells, etc.

View Abbott's profile


2570 posts in 3473 days

#6 posted 10-25-2010 06:21 PM

I finally replaced all of my cordless tools as I grew tired of purchasing new batteries. I don’t know if I could go back to Ni-Cad now becuase of the extra weight. It was tough taking 4 or 5 tools and a 1/2 dozen batteries to the dump but became easier when I went and replaced the tools with the Ion stuff.

If I would have recharged the batteries I may still be using them…good luck.

-- Ohh mann...pancakes and boobies...I'll bet that's what Heaven is like! ♣ ♣ ♣ ♣

View ChrisForthofer's profile


150 posts in 3236 days

#7 posted 10-25-2010 07:32 PM

This can be very dangerous. Even if you are absoulutely sure of the battery chemistry you are dealing with (NiCd, NiMh, Lion, Lpoly) you could wind up with anything from a short circuit to an explosion. The lithium chemistries can be particularly nasty if misshandled/abused. Do this at your own risk and the fact that sites/sellers of this info dont explicitly state that over the first dozen paragraphs is scary. I guess though it is the internet, nobody can be held accountable for any “advice” you get on it :P

-- -Director of slipshod craftsmanship and attention deficit woodworking

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18378 posts in 3845 days

#8 posted 10-25-2010 08:55 PM

treeman How long did the batteries last after yoiu gave them teh treatment?

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View Gregn's profile


1642 posts in 3153 days

#9 posted 10-26-2010 02:57 AM

Will have to give it a try, beats paying $80 for a replacement battery.

-- I don't make mistakes, I have great learning lessons, Greg

View lwllms's profile


555 posts in 3451 days

#10 posted 10-26-2010 04:17 AM

If you get killed by a poisonous explosion it means you did something wrong.
Electrocution is a real possibility also….”

From one of the links above

View mvflaim's profile


189 posts in 3261 days

#11 posted 10-26-2010 04:45 AM

My buddy is an electrical engineer and he has revived his Ni-Cad batteries. I have no idea how he did it though

View SST's profile


790 posts in 4364 days

#12 posted 10-26-2010 05:23 AM

It’s cheap enough to try & you’re not out a lot if it doesn’t work. Feedback is mostly good.

-- Accuracy is not in your power tool, it's in you

View treeman's profile


208 posts in 3619 days

#13 posted 10-27-2010 11:25 AM

treeman How long did the batteries last after yoiu gave them teh treatment?


They are still working. I first did this on a Porter Cable battery pack back in the spring. It still holds a charge and lasts quite a while. I have since done it on a couple of others and they all work like new.

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