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Old 02-26-2006, 10:55 AM   #1
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Default Charging Amp??

Hi, I have a couple Questions about charging amp. My battery have a label in back that say charge at 2-3 amp rate, and my charger have a marked label amp for nimh recommend amp, which say 0.5-3 amp. That's what I did and work fine. After reading alot of post, I see alot of people charge at 5-6 amp, is it because they have matched cell that can do that?? will it hurt the battery if I turn the amp up?? I just purchase a couple new battery pack which don't have chargeing label on them and wonder what amp to charge at.

-Old battery
Orion super duty 3000 nimh stick pack
-New battery
trinty sanyo 3000nimh stick pack
-Charger
integy 16Xpro
duratrax intellipeak pulse

Last edited by evilphu; 02-26-2006 at 11:40 AM. Reason: more information
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Old 02-26-2006, 12:51 PM   #2
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Charging at 5-6 amps gets the batteries done quicker but does decrease the runtime slightly and the battery gets punished a bit more charging at those amps so for u I would charge at a slightly lower amp 3-4 and have the battery last longer.
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Old 02-26-2006, 05:02 PM   #3
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Good to know, I'll keep it at 3 amp for now. Any other input in the amp??
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Old 02-26-2006, 06:43 PM   #4
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yes,if you are rich then charge at high amps.your batteries will last for 6 months only.i charge at 3 - 4 amps,and my batteries can still be used up to 2 years.but of course by that time there is a noticablew drop in performance,but if u charge at 6 all the time,the the drop will come by 6 months.
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Old 02-26-2006, 06:44 PM   #5
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3amp is too low. imho

try 4.5-5flat.. just dont go beyond 6
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Old 03-15-2013, 07:47 AM   #6
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yip benlinus must be a bot as this is car audio advice !!
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Old 03-15-2013, 08:39 AM   #7
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Quote:
Originally Posted by SlideMasteR View Post
yip benlinus must be a bot as this is car audio advice !!
It appears that is the case. I think the reference to Orion is triggering the car audio responses. Orion has made some of the best and most popular car audio amplifiers.
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Old 03-15-2013, 08:56 AM   #8
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old schooled. Charger able to charge .5-3amps. Charger charges upto 3amp or 3000mah. .5-1amp for peaking the battery. Nimh batteries you can charge upto .10-.20% over the ah(amp hour) rating. Heat is the worst thing to do. Overcharging like doubling the ah rating will overheat or overcharge will damage the cells, may burst while charging, especially with old NiMh batterries or NiCd. If overcharging DO NOT leave them unattended. Have a temp gauge near. If you cant hold by hand its overcharged, Me personally wou8ld not sharge over .10% with these old type of batteries. LiPo's and LiFe a whole different chemistry.
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Old 03-15-2013, 12:00 PM   #9
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Quote:
Originally Posted by Geezatec View Post
old schooled. Charger able to charge .5-3amps. Charger charges upto 3amp or 3000mah. .5-1amp for peaking the battery. Nimh batteries you can charge upto .10-.20% over the ah(amp hour) rating. Heat is the worst thing to do. Overcharging like doubling the ah rating will overheat or overcharge will damage the cells, may burst while charging, especially with old NiMh batterries or NiCd. If overcharging DO NOT leave them unattended. Have a temp gauge near. If you cant hold by hand its overcharged, Me personally wou8ld not sharge over .10% with these old type of batteries. LiPo's and LiFe a whole different chemistry.
Seriously!?

Look above..... The original topic was posted over 7 years ago! Nobody cares about charging Nimh batteries anymore. Only reason this thread popped up was from a bot posting about car audio capacitors. Have a read above sir.
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Old 03-15-2013, 12:15 PM   #10
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Wow this thing is reviving all kinds of old useless threads. They did this one too.
http://www.rctech.net/forum/electric...869-radio.html
Maybe a mod should look into this.
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Old 03-15-2013, 12:50 PM   #11
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For a rookie on the thread, just glad to help him on the past. Experience on NiCd and NiMh still good to know. Lipo and LiFe chemistry a bit different. RCTech threat that's what it here for. RC stuff past or Present.
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Old 03-15-2013, 03:07 PM   #12
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I have been charging at 10 amps for 2 seasons, While i do not notice any decrease in performance, the internal resistance has gone up slightly.

I use a turbo 35 with the newest software & revtech 2s 65c batteries.

I now charge at 12amps, 4.27v per cell, and have zero issues with the batteries.

And i almost never balance them
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Old 03-15-2013, 03:56 PM   #13
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Quote:
Originally Posted by Shortbusallstar View Post
I have been charging at 10 amps for 2 seasons, While i do not notice any decrease in performance, the internal resistance has gone up slightly.

I use a turbo 35 with the newest software & revtech 2s 65c batteries.

I now charge at 12amps, 4.27v per cell, and have zero issues with the batteries.

And i almost never balance them
The high charge rate damaging batteries in only a few months pertains to NiMH batteries. Most of the newer LiPo batteries can be charged at 1 to 2 c with a balancing port with little degradation in performance. Until they begin to reach their max number of cycles. Usually in the 200's. Then their voltage will begin to fall off quicker from max and capacity will begin to fall off quickly.
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Old 03-15-2013, 08:04 PM   #14
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Max 1c and always balance charge .
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