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Old 07-02-2003, 09:41 PM   #1
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Default Charging standard of AA sized batteries...

I'm sorry it's out of topics but I think you guys can help! We R/C got '6A charge, 30A discharge, 0.9V cut-off' as our 'general' sub-C sized battery charging/discharging standard. My problem is how about AA sized batteries!? My situation is that now our company got our own-made AA charger and we hope to improve our charger's 'software' so to compete with other brand commerical chargers (e.g., GP, Sony...).
I did suggest '1A charge, 0.5A discharge with 0.9V cut-off' but my boss seems to believe something more factual... (Haha)
What's your opinions then?

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Old 07-11-2003, 09:01 AM   #2
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Default Charging standard of AA sized batteries...


I prefer to charge my RX/TX packs at 1.0 amps for time reasons (many packs to charge).
Many other People though, like a 0.5 rate for the small packs as it is easier on the cells.

This is all assuming they will be used in a R/C application.
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Old 07-11-2003, 09:05 AM   #3
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Post AA Charging

I charge mine at .5 amps just to be easier on the batteries. But if I am in a hurry I will charge them at up to 1 amp. Never discharged any of my AA cells. All of my RX/TX packs are NimH.

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Old 07-11-2003, 09:19 AM   #4
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I normally charge my AA 8cell TX pack at 1.5 or 2 amps while sitting them on an airconditioning vent so they stay cool. I know it's a bit much but there old 1500nimh batteries and I only need then to last a day of racing, they usually last me three weeks of racing on a charge. I don't discharge my AA'a.

Last edited by fatdoggy; 07-11-2003 at 09:25 AM.
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Old 07-11-2003, 10:16 AM   #5
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I charge my 1800mAH NiMH Monster PowerCells at .6A.

Fatdoggy, you shouldn't ever "force-cool" batteries while charging or discharging.
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Old 07-11-2003, 02:44 PM   #6
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If your trying to match "AA" packs, I would go with somethign like this.

1 amp charge.

2-3 amp discharge.

i don't see charging at a higher rate then discharging (ie 1 amp charge .5 amp discharge).
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Old 07-12-2003, 12:48 PM   #7
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I'm charging my Varta AccuPlus 1100 NiMh 0,5 amps, and discharge them with 2 amps. A couple of times I've even equalized them down to 0,6 volt on a slow discharger (100 mAh I guess).

I've had them for three years now, and they still have plenty of runtime and good voltage too. I'm using them in my transmitter.
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