The DJI Extreme Battery for Osmo Action 3 and 4 is a lithium-ion polymer battery with a capacity of 1770mAh/6.81Wh and a power output of 3.85V. It’s capable of powering your DJI Osmo Action 3 or DJI Osmo Action 4 for 160 minutes and can be charged in-camera or with an optional charger.