. The Phantom 4 Battery Charging Hub is designed for use with the Phantom 4 Intelligent Flight Battery. When used with the Phantom 4 Battery Charger it can charge up to three Intelligent Flight Batteries. The Intelligent Flight Batteries will be charged in sequence according to their power levels from high to low. Storage Mode allows the Charging Hub to keep the Phantom 4 Intelligent Flight Battery at a 50% charge which is ideal for storageFeatures 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 4 series Charger.. .