This is the FT2F1700BV2 6.6V 1700mAh LiFe Transmitter Battery. FEATURES: For use with the Futaba 18SZ, 14SG, 10J, 6K, 6J, 4PV, 4PX/R, 4GRS, 4PKS/SR and 4PL/LS YOU WILL RECEIVE: 6.6V 1700mAh LiFe Transmitter Battery with Balance and Discharge Connectors Instruction Sheet REQUIREMENTS: Compatible charger-constant current/constant voltage balanced charging system such as the Hobbico LiFeSource Charger, HCAM6375 SPECIFICATIONS: Nominal Output Voltage: DC6.6V Nominal Capacity: 1, 700mAh Number of Charge/Discharge Cycles: Approximately 500 (depends on USAge) Ambient Temperatures: Charging: 32 to 113F (0 to 45C) Discharging: -4 to 140F (-20 to 60C) Storage: -4 to 77F (-20 to 25C) DIMENSIONS: 1.7 x 3.1 x 0.67" (42.5 x 79 x 17mm) approximately Weight: 3.2oz (91g) approximately COMMENTS: Do not use as a receiver battery. jxs 11/08/16ir/jxs&