Lithium Polymer (Lipo) batteries are a type of battery now used in many consumer electronics devices. They have been gaining in popularity in the radio control industry over the last few years and are now the most popular choice for anyone looking for long run times and high power. Specifications Battery Type: Lithium Polymer (LiPo) Voltage: 11.1V Capacity: 5200mAh (milliampere-hour) Discharge Rate: 35C (C-rating indicates the maximum continuous discharge rate) Cell Configuration: 3S (3 cells in series) High Energy Density: Provides a large amount of power in a compact size Lightweight: Designed to be lightweight for improved performance in RC applications High Discharge Rate: Capable of delivering high currents for increased performance