This is the Great Planes ElectriFly 8.4V 7-cell 650mAh NiMH Battery. FEATURES: Rectangular shaped shrink-wrapped and pre-assembled with Red 2-pin connector (GPMM3106) Used in ElectriFly Park Flyer model airplanes INCLUDES: One Great Planes ElectriFly 7-cell 650mAh NiMH Battery REQUIRES: Charger capable of Charging Nickel Metal Hydride batteries Suitable Chargers: ElectriFly DC Peak, the AC Park Flyer Peak (GPMM3005), and the TRITON series SPECS: Cell Size: AAA Length: 3.7" (95mm) Length of lead: 4" (101mm) Width: .85" (21.5mm) Height: .85" (21.5mm) Weight: 3.35oz (95g) kpm03/02/200 ir/jxs