Product Description Keep your Mini 2 in the air and mobile devices charged with the 3-Battery Two-Way Charging Hub for Mini 2 from DJI. Simply insert up to three Mini 2 flight batteries and connect it to a USB charger (not included). The hub supports both Quick Charge and USB Power Delivery technologies for charging the batteries at up to 29W. Sequence Charging The Mini 2 charging hub recharges the batteries in sequence. It automatically detects the battery with the most power and charges that one first. That way you can be up and flying in as little time as possible. Device Charging The hub can double as a makeshift power bank. A USB Type-A output can draw from the batteries' power to provide up to 5V/2A to a smartphone, tablet, DJI Pocket, Osmo, or other compatible device. Battery Status Built-in LED lights for each compartment let you easily view the battery levels of all three batteries The DJI Mini 2 Intelligent Flight Battery features a high energy density that not only lowers the overall weight but extends max flight time to 31 minutes for even more fun. With the built-in DJI Intelligent Battery Management System, battery status is monitored and reported in real-time, allowing you to focus less on battery level and more on flying. Stable energy output and accurate calculation of remaining flight time add another layer of safety during flight. Battery Type: LiPo 2S Rated Voltage: 7.7 V Charging Voltage Limit: 8.8 V Max Charging Power: 29 W Package contains 1x DJI Mini 2 Two-Way Charging Hub 2X DJI Mini 2 Intelligent Flight Battery