Great Planes LiPo 4S 14.8V 2200mAh 30C Electrifly with Ult Plug 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 INCLUDES: Great Planes ElectriFly Lithium Polymer 4S 2200mAh 14.8V 30C Balance Battery Pack with ElectriFly Balance Connector, Deans Ultra Plug and In REQUIRES: Balancer such as the Equinox LiPo Cell Balancer (GPMM3160) and LiPo compatible charger OR LiPO compatible charger and balancer such as the E