Stage 2 performance provides faster acceleration and longer run-times compared to Stage 1. The included Prophet™ Sport charger (DYNC2030) provides a safe and convenient method of charging the included 2S 30C 7.4V 5000mAh Dynamite® Reaction® battery and offers the next step in speed, acceleration and overall performance. Your vehicle's ESC must have a LVC (low voltage cutoff) to utilize the included 2S Li-Po battery.