This Rage RC factory replacement 2S lithium polymer battery is designed specifically for the Hero-Copter Military model. It delivers 7.4V nominal voltage at 350mAh capacity with a 25C discharge rating. The battery features a USB-C charging port and a power button built directly into the pack, and connects to the helicopter via an integrated clip-style mount. Features: 7.4V nominal, 350mAh capacity, 25C discharge rate Built-in USB-C charging port Integrated power button on the pack Clip-style mount for direct helicopter installation 2S lithium polymer cell configuration 7/7/26 cs