This is the Great Planes ElectriFly Lithium Polymer 600mAh 11.1V 25C Battery Pack with Balance Connector. FEATURES: Balancing allows all cells to fully charge to 4.2V ensuring maximum power from the pack, plus conditions the cells better so they will last longer Safer as long as the Cell Balancer or a properly equipped Charger with Balancing Capabilities is used INCLUDES: Great Planes ElectriFly Lithium Polymer 600mAh 11.1V 25C Balance Battery Pack with ElectriFly Balance Connector, Deans Micro Connector, and Instruction Sheet REQUIRES: LiPo compatible charger and balancer such as the ElectriFly AC/DC TritonEQ (GPMM3155) or the ElectriFly AC/DC Triton2 EQ (GPMM3156) LiPo Charging Bag SPECS: Capacity: 600mAh Number of Cells in Series: 3 Rated Voltage: 11.1V Discharge Current: 25C Maximum Recommended Charging Amps: 0.6A Pack Dimensions: 2.1 x 1.2 x 0.75" (52 x 31 x 19mm) Weight: 1.8oz (51g)