This is the battery that powers the Mavic Air 2 and Air 2S drones from DJI. This is a 4-cell (4S) LiPo battery with a maximum capacity of 3500 mAh or 40.42 Wh. This battery will provide up to 34 minutes of flight time with your DJI Mavic Air 2 and up to 31 minutes of flight time with your DJI Air 2S.