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Old 07-06-2011, 03:24 PM   #1
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Default how to care for a nickel metal battery

i just got a brand new nickel metal battery pack for my cup racer havent done anything with it yet do i charge it first or run it completly dead then charge it ? i have a good charger just want to know what is the best way to get the most out of this pack considering i spent a good chunk of change on it
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Old 07-06-2011, 08:20 PM   #2
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Depends on what the cell manufacturer or pack assembler recommends. This is what ProMatch recommends for their cells - charge first at low rate and watch temps!

http://www.promatchracing.com/stickpackins.php


If you spent that kind of money, ask them - do they need breakin and if so what do they recommend. They should be glad to help out with advise.
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Old 07-06-2011, 11:08 PM   #3
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the pack came with no instructions so im at a loss i think ill charge it with a slow charger then go from there
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Old 07-07-2011, 06:36 AM   #4
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I think that you should charge it first. Ni-MH batteries still shouldn't be drained fully to where the truck isn't moving anymore. How many mAHs is it rated for? That will tell you how many amps you charge it at.

4000 mAH = 4 Amps, 1 Hour Charge Time

5000 mAH = 5 Amps, 1 Hour Charge Time



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Old 07-07-2011, 11:19 AM   #5
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I usually charge the NiMh Packs when new at 1C (C being capacity)

So a 3300mah pack, would be charged at 3.3 amps. Watch the temps. Should be 120 degrees F or less. (Should be able to hold in your hand without discomfort)

Discharge: I discharge to .9 volts per cell. (5.4 volts in the case of a 6-cell pack) For the first few cycles, again, discharge at 1C. So 3.3amps.

When storing for a long periods of time, be sure to check to make sure the pack voltage doesn't drop to 0 as your pack may be damaged. Usually if this happens, the pack will charge up, but then will not have any punch, or will not hold the charge if left for a day or two.

--Paul Susbauer
Venom Group International
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