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Old 08-04-2006, 10:23 PM   #1
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Default battery numbers help

I have 3 3300 and 1 3700

how do i learn at how many amps to charge and discharge each pack/

is there a mathmatical equation.
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Old 08-04-2006, 10:30 PM   #2
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here is a good link for battery care. http://www.promatchracing.com/faq.php

Hope this helps.
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Old 08-04-2006, 10:57 PM   #3
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Originally Posted by keachj06
I have 3 3300 and 1 3700

how do i learn at how many amps to charge and discharge each pack/

is there a mathmatical equation.
Charge at 6 amps, with 12-18mv delta peak for the entire pack, thats .02-.03, use the lower setting for hotter ambient temperatures.

Discharge at 30 amps to 5.4 volts for the pack (6cell).

Generally I believe you can get away with a 2-3C charge rate. Meaning, you can charge at a rate that is 2-3 times the capacity of the cell. That is how the 2000's were at least.

So, you should be able to charge a 3300 at 6.6-9.9 amps. I frequently charge at rates up to 10 amps if I am late to make a race. I NEVER let the pack reach a peak at that amperage rate. You are safest at 5-6 amps charge, and I think your packs will probably last longer too.
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Old 08-04-2006, 11:12 PM   #4
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WOW 10 amps
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