Motorola Moto Mod Battery Users can instantly add up to 22 hours of battery life to their device without adding bulk. The Battery Moto Mod snaps on so users can recharge on the run. Forget about fumbling with batteries or searching for open wall outlets. Just snap and go. Product Features:Up to 22 hours of battery. Enjoy extra battery life on the go, so users never run out of power.Sleek, integrated design. Add battery life to a device without adding bulk. Efficiency Mode for more power. Automatically charge at the most efficient times, and get up to 20% more battery life.