This is the Ofna 1700mAh NiMH Flat Receiver Battery. FEATURES: Five-cell flat (side by side) cell configuration for on-or off-road nitro vehicles Five-cell, 6-V rechargeable receiver packs offer more voltage that standard 4-cell NiCd packs for faster servo reaction time and longer run times INCLUDES: Ofna 1700mAh NiMH Flat Receiver Battery with universal connector REQUIRES: Battery charger for NiMH batteries SPECS: Length: 3.3" (84mm) Width: 1.2" (30mm) Thickness: 0.67" (17mm) Weight: 4.23oz (120g) Lead Wire Length: 8.9" (226mm) jxs 8/28/06 ir/jxs