Battery Rules
All classes are limited to Sub-C 4 or 6 cell maximum, any pack that is readily available.  Example: the new 4500 and 4600 batteries will be legal once available.

Lipo is legal but must be a hard cased 7.4 volt, 2s , ROAR approved, Lipo (found here: http://www.roarracing.com/approvals/lipobattery.php)
When charging at the track you will need to charge in an Ammo box or lipo bag. You must run a Lipo smart stop system. This can be built into the ESC or as a separate unit.