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Old 03-27-2008, 05:58 PM   #1
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Default Battery Prep for Race Day

Hey All,
I need a bit of battery advice. What's the best way to get your nimh batteries ready for a race? Should you cycle them the night before? It's been about a week since they have been cycled, and they were put up with a little bit of charge in them. Or, should I just wait till race day to charge them up?
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Old 03-27-2008, 06:18 PM   #2
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Hey SpidarX,

Try this method... everyone has a different method of cycling batteries but here's how I do mine.

Mid week like wed or thursday cycle your packs about 3 times let them thourgly cool down between cycles.

That should do it. Come race day run a cycle on them what I mean by this is when you go to practice charge them up and go out. 1 run per pack let cool discharge, come the Qualifiers and the main your pack's will be more awake.

There are other ways to but thats how I do mine .
Hope this helps
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Old 03-27-2008, 06:33 PM   #3
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This is my method. It is meant for assembled batteries, not stick packs. Store the cells with some charge left in them. Don't let your cells drop to zero volts. On race day discharge the cells with a high amp discharger. Then put the battery on the charger for 1-2 minuets. Next, move the battery to some form of equalizing device, Smart Tray, etc. Once the equalizing of the cell has completed and the battery has cooled, then start charging so the battery will complete its charge minuets before your race. This process may take some time. It is best to start early with the discharge and mini charge portion. Remember to always follow your charger and battery matchers charging instructions. After your race is over, remove the battery from the vehicle and you are ready to store it for the next event.

Others may have different variations, but this is main format of what many people are doing with batteries.

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Old 03-27-2008, 06:35 PM   #4
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Thanks guys
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Old 03-27-2008, 07:03 PM   #5
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here's my regimen with nimh 4200's before i switched to lipo's...

after the last heat the pack will run on race day, i discharge and equalize the pack. then put in around 1800-2000mah before storing them (make sure tha packs are cool before putting them in the box)

mid week, wed or thurs, i discharge and equalize then put back 1800-2000mah again.

come sat, race day, i discharge and equalize, then fully charge the pack for a practise run.

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