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Old 03-07-2010, 03:15 PM   #1
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Default charging NI-MH batteries

I have 2400ma 7.2v NI-MH stick packs and am unsure what charge rate i should set my charger to (swallow)
whats the best rate so not to damage the packs but for a fast charge
thanks
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Old 03-07-2010, 04:19 PM   #2
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1 amp for every 1000mahs they say. u can push it but watch the pack temp.
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Old 03-07-2010, 10:24 PM   #3
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thanks
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Old 03-08-2010, 09:59 AM   #4
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1 amp for every 1000mahs they say. u can push it but watch the pack temp.
Yes, 1 amp per 1000mahs. Better chargers with adjustable amperage by .1 milliamps, you can adjust them to 2.4amps for peak voltage.If charged at 2amps, just let it trickle charge the rest, just takes a bit longer,
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Old 03-08-2010, 05:01 PM   #5
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Thanks guys so I should be ok charging at 2.4 amps with the swallow
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Old 03-08-2010, 07:08 PM   #6
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I would charge at 5 amps. Be alot faster charge and more punch. Just monitor the packs temp or keep a fan on it if neeed be. Restart the charge if it false peaks.
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Old 03-09-2010, 08:50 AM   #7
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how do you know when there is false peak? i think i get that often my self. with my old pack, i wud peak it off, and then chare it again if the pack wasnt too hot.
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Old 03-09-2010, 11:17 AM   #8
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how do you know when there is false peak? i think i get that often my self. with my old pack, i wud peak it off, and then chare it again if the pack wasnt too hot.
Well, good chargers will check when they think the internal resistence is high and shut it down causing false peaks. But basically the charger thinks its charged or may stop the charge thinking it'll damage the pack. Older batteries get this alot and you might have to cycle the packs. Which is charging/discharging fully to get them taking a full charge again. Really old packs sometimes wont take a charge so you have to force charge them for 1-5 mins to get them going then switch to the normal mode. Cheapo Dynamite chargers are good for that. :P Even some will try "zapping" the old batteries with a big surge to get some life in them. Might want to read up on it. 20amp discharges are good to get a pack down fast and then charge it once cooled but make sure you dont discharge it dead or you'll damage the pack.
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Old 03-09-2010, 06:38 PM   #9
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yeah im using a dnamite charger. i charge my new 3800mah packs at 4 amps. once there warm, i turn it down to 1 or 2 to finish, and then it peaks. even if its false, the 3800 give me good time, so i dont bother to re charge.
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Old 03-09-2010, 08:40 PM   #10
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yeah im using a dnamite charger. i charge my new 3800mah packs at 4 amps. once there warm, i turn it down to 1 or 2 to finish, and then it peaks. even if its false, the 3800 give me good time, so i dont bother to re charge.
Which Model type Dynamite Charger You have??
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Old 03-09-2010, 08:56 PM   #11
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you really want a great nima charger?? astroflight 110D these things are bullet proof and work fantastic! this isnt a sales pitch but I went all lipo and have 2 of these for sale, you or anyone else interested shoot me a PM
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Old 03-10-2010, 11:29 AM   #12
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vision peak 2..

Im waiting on hobbypartz to get some more of their "blue lipos" in. im gonna try those. 3-cell 3000mah. $19.70x2
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