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Old 06-15-2003, 07:28 PM   #1
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I have a 7.2 battery and when I charge it, it gets up to 8.5 before I end up disconnecting it. Is my peak charger broke or is this normal? If I leave the battery charging, will it eventually peak at a safe range?
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Old 06-16-2003, 09:01 AM   #2
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I assume you have NiMh batteries and a good charger (one that uses a power supply, not A/C or a car battery) We use Novak Millenium, but others, like the Pit Bull, are equally good. Chargers that work with timers are junk.

Charge at 5.0 amps with a .04 V cut-off. Use a fan to cool the batteries while charging and after until they are cool. Heat kills batteries.

A good pack will charge up to 9.2 volts and beyond. They heat up, but this is OK because you want the volts. That's why the fan.

Re-peak about 20 minutes before the race.
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Old 06-16-2003, 11:28 AM   #3
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If your pack maxxes out at 8.5 volts, you may want to get a new one, it's pretty much destroyed. I can get 9.6 out of all of my packs before they are done charging.
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Old 06-16-2003, 04:01 PM   #4
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I could probably get 9.6 too, if I keep charging it, but I stop it manually because Im scared its not suppose to reach that high.

I have an activator sport charger, which uses AC or a power supply. It doesnt have a fan too cool that batteries while charging. Its just for a starter box because I run nitro.

Are power supplies better than electric sockets?
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Old 06-16-2003, 10:07 PM   #5
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Now we learn you're a gas guzzler. Just charge the ##$%^&* things.

Any kind of peak detection charger should be OK. If the cut-off voltage is adjustable, set it for .04 if you have NiMh batteries, .08 if you have NiCads.

The fan is something you provide, and it will help but is not necessary.
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Old 06-17-2003, 03:27 PM   #6
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Quote:
Originally posted by nitrosaurus
Its just for a starter box because I run nitro.

Are power supplies better than electric sockets?
Should have got a pull-start[lol].According to the instructions on my new charger, AC will only charge at 3 amps, while a DC power supply will charge higher. The guy at the LHS warned that NIMH shouldn't be charged over 4.5 amps.

I have a question too. If I plugged in a car[actual car, not RC]charger, then hooked the RC charger to that, would it charge at over 3 amps? I don't think it would, but I want to know anyway.

I got some Peak matched 3300's, and they'll go a little over 10 before they're done.
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Old 06-17-2003, 03:28 PM   #7
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If your charger doesn't tell you that they're done, they aren't done. Unless something's wrong with your charger.
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