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post #1 of 28 (permalink) Old 07-15-2015, 07:23 AM Thread Starter
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Default NICAD Battery Rebuild

I have some NICAD batteries that need to be rebuilt. I've seen several companies on the WEB that rebuild nicads. Anybody have any first hand experience and willing to provide a recommendation? Thank You
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post #2 of 28 (permalink) Old 07-15-2015, 09:47 AM
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Jim...can't vouch for this place but it comes up a lot in many forums that discuss rebuilding battery packs...

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post #3 of 28 (permalink) Old 07-15-2015, 11:13 AM
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A few years ago I had a couple of nicad packs rebuilt and I was very satisfied with the results. Sorry I don't remember the company name.

Papa Bob
Using a couple of old Craftsman routers & a Bosch 1617EVSPK & a Dewalt DWP611PK Routers in SW Louisiana.
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post #4 of 28 (permalink) Old 07-15-2015, 01:39 PM
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I believe there are some videos on youtube showing how to rebuild the packs. You have to be careful to get the connections from battery to battery correct so before you take the old one apart you need to make a diagram. It didn't look that hard to do but I haven't tried it yet. It seems to me I've seen the batteries on ebay.

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post #5 of 28 (permalink) Old 07-15-2015, 01:50 PM Thread Starter
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Default NCAD Battery Rebuild

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Originally Posted by Cherryville Chuck View Post
I believe there are some videos on youtube showing how to rebuild the packs. You have to be careful to get the connections from battery to battery correct so before you take the old one apart you need to make a diagram. It didn't look that hard to do but I haven't tried it yet. It seems to me I've seen the batteries on ebay.
I've got DeWalt batteries which are easy to open. I've watched a couple of the videos. Voltman has a video that shows an employee using a machine. Not sure of the terminology...tack weld or spot weld? I've also seen one where a soldering iron was used. There is also a company that sells a solderless connection system. Just trying to decide what to do. I've got 4 batteries. 2 are older and I was recently able to shock them back to life but I'm not sure how long they'll last. One of my newer ones got weak real fast after charging so they may be on borrowed time.
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post #6 of 28 (permalink) Old 07-15-2015, 04:21 PM
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I have an old PC 12volt that I would really like to use again so I've toyed with the idea of re-doing it. But that is way down my priority list so it may be a while. My son showed me a trick that works reasonably well and that is to freeze the batteries for a day or two. We took a cordless phone battery that would only last 5 minutes and cost $30 something to replace. We froze the battery and it would hold a charge for a half hour conversation for another 6 months after that. I froze the PC battery once, maybe I should try it again. I haven't really needed it lately.

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post #7 of 28 (permalink) Old 07-15-2015, 04:30 PM
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I tried it with the old Makita 12v batteries, and it didn't work.

Herb
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post #8 of 28 (permalink) Old 07-15-2015, 05:46 PM
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I found a local battery store that does this kind of thing. But be sure they use the exact same type and size, and capacity battery. One of my packs they substituted a smaller battery and it has never been much good.
Check local first.
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post #9 of 28 (permalink) Old 07-15-2015, 06:21 PM
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Bulbs And Batteries (the old Batteries Plus) rebuilds but it is just about the came cost to buy new. I found a couple of places that sell the cells; have to look them up. You have to be careful to hook them up in the same order. I have also read that you can touch a welder's leads to a battery, really quick, and this "dissolves" the crystalline junk.
I have five old Ryobi batteries.

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post #10 of 28 (permalink) Old 07-15-2015, 08:32 PM Thread Starter
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Default NICAD Battery Rebuild

I used a 12 volt AC to DC power converter to zap 2 of the dead batteries. After the zap I was able to charge both of them. Before the zap neither would charge.
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