The DJI Phantom 3 Battery Charging Hub is an an extremely useful accessory for anyone who has more than one battery for their DJI Phantom 3, as it allows you to charge up to 4 batteries without having to switch your charger between them. This means that you can charge all of your batteries while you sleep! The Charging Hub automatically determines which battery has the most remaining power, and charges it until full before moving on to the next battery. Intelligent charging management, capable of automatically charging up to four batteries. Each battery‘s status is shown using LED indicators. Small and easy to carry. Internal power management ensures safety at all times. Integrated port enables future firmware updates. Compatible with the Phantom 3 series Charger.