HPI Racing 101936 Plazma NiMH 6.0V 1600mAh 9.6Wh Receiver Battery Pack FEATURES: Sized to fit the HPI Nitro 3 Drift, Firestorm 10T and any of the Savage Monster Trucks 3+2 configuration, 3 cells on bottom with two on top INCLUDES: Plazma NiMH 6.0V 1600mAh Hump Receiver Battery Pack with BEC Connector REQUIRES: NiMH compatible charger