Help keep essential mobile devices charged with this Battery to Power Bank Adapter for Air 2S & Mavic Air 2 Flight Batteries from DJI. When on location, you need to make sure other essential mobile devices are charged, such as a tablet or smartphone for the controller. This adapter allows you to tap into the power inside the flight battery, letting you use it to charge your device like a power bank. A partially charged battery after the flight is an ideal way to both maximize flight time and provide power.