DJI Phantom 3 Battery Charging Hub (Pro/Adv) Part 53

Small and easy to carry, the Phantom 3 Battery Charging Hub enables you to charge up to four Phantom 3 Intelligent Batteries together. The charging hub will automatically select the battery with the highest amount of remaining power, and charge it until full before moving on to the next battery. The entire process is monitored and each battery’s status is shown using LED indicators, making the charging process simple and easy. 

Used with either the Advanced or Professional Phantom 3 charger, it's compatible with P3 batteries only. 

Note that charging 4 batteries in the hub will still take the same amount of time as charging 4 batteries individually with one charger, but will be far more convenient.