LiFe (lithium iron phosphate LiFePO4) offers a lightweight, hig energy density battery with more power than NiCd and NiM transmitter batteries provide. 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 Charger such as the Hobbico LiFeSource AC/DC Balancing Charger (only use chargers that specifically say they are compatible with LiFe cells)