This is a 3000mAh Pro 6-cell NiMH stick pack from Epic FEATURES: NiMH chemistry Long run times. Assembled. INCLUDES: One 3000mAh stick pack with 16 gauge wire and pre-installed Tamiya type connector REQUIRES: Charger capable of charging NiMH packs SPECS: Length: 5 1/4" (133mm) Width: 1 7/8" (47mm) Height: 3/4" (19mm) Voltage: 7.2 Volts