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02-14-2012, 07:21 AM | #1 |
Quarry Creeper Join Date: Jan 2004 Location: Long Island
Posts: 248
| Restoring old battery packs
My packs have been sitting for so long, many of them won't take a charge. Even my beautiful Ballistic 3000 matched packs won't take more than a 5% charge. I've tried everything short of voodoo. Things I have tried: -Low .1amp charge/discharge cycles -5amp burst charges -Freezing them -Hooking them to a 8v 300 mah D/C converter overnight The NiCads seem to come back better than the NiHMs which, from what I have read, is standard. Anyone have any tricks I haven't tried? |
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02-14-2012, 10:55 AM | #2 |
RCC Addict Join Date: Dec 2011 Location: Raleign
Posts: 1,439
| Re: Restoring old battery packs
I had some old NiMH packs that I had to hook up to an old school trickle charger I had and let them trickle over night. I think I had some 2000mah packs and the charger was 50ma so that's technically about 40 hours for a full charge. You'll want to trickle them for a while and then drain them fully and do it again. I'd try a slightly lower charge rate than the 300ma you already did. This only works for NiCD and NiMH, never do that with LiPO!! |
02-14-2012, 11:50 AM | #3 |
Quarry Creeper Join Date: Nov 2007 Location: NH
Posts: 427
| Re: Restoring old battery packs
I've played around with old batteries in the past (I'm a broke mofo and a cheapskate) and I'll be honest with you. Don't waste your time with them, if they aren't charging good from the get-go then they probably will dump shortly after to get ready to use them. Battery pack prices are really stpid low, spend a few bucks and get your self some new packs.
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02-14-2012, 09:42 PM | #4 |
Quarry Creeper Join Date: Jan 2004 Location: Long Island
Posts: 248
| Re: Restoring old battery packs
I've had 2 chargers going for the last week trying to work some life into these. I've probably spent more in electricity than the cost of buying new packs. I found a 100mah adapter and have one battery on it for the night. If it doesn't work, guess I'll pry open my wallet. |
02-15-2012, 01:49 AM | #5 |
Rock Crawler Join Date: Mar 2010 Location: Happy Top
Posts: 777
| Re: Restoring old battery packs
I shot my last bad pack with a 357 that worked good after I got some new ones. (Side note 3s will stop a 38 )
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