This is the Hobbico LiFe 9.9V 1500mAh 1C Transmitter Square Battery Pack with Universal Connector. FEATURES: LiFe (lithium iron phosphate LiFePO4) offers a lightweight, high energy density battery with more power than NiCd and NiMH transmitter batteries provide INCLUDES: Hobbico LiFe 9.9V 1500mAh 1C Transmitter Battery Pack, Discharge Lead with Universal Connector, Balance Lead with ElectriFly Balance Connector REQUIRES: Charger such as the Hobbico LiFeSource AC/DC Balancing Charger (HCAM6375) (only use chargers that specifically say they are compatible with LiFe cells) SPECS: Capacity: 1500mah Rated Voltage: 9.9V Continuous Discharge Rate: 1C (1.5amps) Maximum Recommended Charge Current: 1C (1.5amps) Charge Lead: 24AWG, 1.2" (30mm) long wire w/ ElectriFly Balance Connector Discharge Connector: 22AWG, 2.9" (75mm) long wire w/ Universal Connector Dimensions: 3.9 x 1.02 x 1.06" (100 x 26 x 27mm) Weight: 4.59oz (130.4g) including wires jxs 01/28/11 ir/jxs