This is the Great Planes ElectriFly 8-cell 1100mAh NiMH Battery.FEATURES: Flat pack (side-by-side)shrink-wrapped & pre-assembled with Red 2-pinconnector (GPMM3106)Used in ElectriFly Park Flyer model airplanesINCLUDES: One Great Planes ElectriFly 8-cell 1100mAh NiMH BatteryREQUIRES: Charger capable of charging Nickel Metal Hydride batteries.A suitable charger is the Great Planes Triton2 (GPMM3153)SPECS: Cell Size: 2/3 ALength: 5-1/4" (135mm) Length of lead: 4" (101mm)Width: 1-1/8" (29mm)Height: 5/8" (17mm)Weight: 6.34oz (180g)