. The Mavic Air 2 Battery to Power Bank Adaptor is designed to provide power from the Mavic Air 2 Intelligent Flight Battery to mobile devices such as smartphones or tablets. Use the intelligent flight battery as a power bank. An intelligent flight battery has a rated capacity equivalent to an ordinary mobile phone & about 20% of the remaining power after flight can be used to charge a mobile device. Top Features. Turns an intelligent flight battery into a power bank Makes full use of the remaining power. What's in the box?. 1 x Battery to Power Bank Adapter..