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Old 08-09-2010, 11:44 AM   #16
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Resurrecting lame NiCD's by voltage surging


Finally got around to trying this on a couple old 18v 1.4Ah Hitachi batteries that wouldn't take a charge and I gotta say I'm a pleasantly surprised skeptic.
First charge after zapping didn't hold long, but the second seems to be fine. One went to 21.6v, the other to 21.7. Used one in a flashlight last night for about 30 minutes and the charge held, still well above 18v. I shoulda taken this seriously years ago
I used two 12v marine batteries in series and only needed to zap them once to get results.
I'm still not convinced yet how long this fix will last, but even if it's only a few months it's worth a shot. After all, it's a free fix

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Old 08-10-2010, 06:23 AM   #17
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Resurrecting lame NiCD's by voltage surging


Quote:
Originally Posted by ratherbefishin' View Post
Finally got around to trying this on a couple old 18v 1.4Ah Hitachi batteries that wouldn't take a charge and I gotta say I'm a pleasantly surprised skeptic.
First charge after zapping didn't hold long, but the second seems to be fine. One went to 21.6v, the other to 21.7. Used one in a flashlight last night for about 30 minutes and the charge held, still well above 18v. I shoulda taken this seriously years ago
I used two 12v marine batteries in series and only needed to zap them once to get results.
I'm still not convinced yet how long this fix will last, but even if it's only a few months it's worth a shot. After all, it's a free fix
Yes I don't expect them to be as good as brand new batteries but this method certainly works pretty well. I've been using my old batteries pretty extensively since doing this and they seem to be holding up pretty well.

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