You definately want lipos. How long a pack lasts does depend on the car, gearing, how you drive etc, and also on how many rounds of qualifying we get in a day.
In theory 2 packs of around 5000mAh ought be be plenty for a 2wd with a sensible motor.
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Yz4 - Yz2
DEX210 - Cobra 4210- DEX410
RC10 Team - Manta Ray - RC10T
Mini Trophy - Blizzard - Wheely King
Tz4 - GT24B
BMRCC
Emergency back-up race controller
(but only if nobody better is available)
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