This is the HydriMax Ultra 4.8V NiMH 2000mAh AA Receiver Flat Battery Pack. / / FEATURES: Ideal for .40 size and larger aircraft, nitro cars, trucks and boats / High discharge cells for the high power demands of digital servos / Gold plated terminals for excellent conductivity / / INCLUDES: HydriMax Ultra 4.8V NiMH 2000mAh AA Receiver Flat Battery Pack with / Universal connector / / REQUIRES: Battery charger such as, / Hobbico Quick Field Charger MkII, HCAP0290 / DuraTrax ICE, DTXP4170 / Hobbico Accu Cycle HCAP0260, Accu Cycle Elite, HCAP0280 / Great Planes ElectriFly TRITON JR GPMM3152 / Great Planes ElectriFly TRITON2 GPMM3153 / Great Planes ElectriFly TRITON ZX GPMM3154 / / SPECS: Rated Voltage: 4.8V / Dimensions: 2.3"x 2.1"x .6" (58x53x15mm) / Weight: 4.3oz (122g) / Lead: 20AWG 5.9" (150mm) with Universal connector / Charge Rate: 11 hours @ 200mAh / / jxs 9/20/06 / ir/jxs