Feature:1. Multiple Battery Compatibility: The drone battery charging hub can charge up to three drone batteries, compatible with for Mini 3, for Mini 4, and for Mini 3 Pro batteries.2. Dual Charging Modes: The drone battery charger features full charge mode and storage charge mode, the full charge mode full charges the battery for long term use.3. Storage Mode: In storage mode, batteries with less than 60% power will be charged to 60%, ideal for longterm battery storage. Note that batteries above 60% will not be charged in this mode.4. Sequential Charging: The charging hub charges batteries in order based on remaining power, with full charged batteries receiving power first to maximize efficiency.5. Fast Charging: With an input of PD35W, three for Mini 3 4 Pro standard batteries take about 150 minutes (about 50 minutes per battery), and three for Mini 3 4 Pro plus batteries take about 195 minutes (about 65 minutes per battery).Specification:Item Type: Drone Battery Charging HubMaterial: Plastic, ElectronicsInput: 5V, 9V, 12V, 3ADC Output: 8.5V, 3.8A.Package List:1 x Drone Battery Charging Hub2 x Charging Hub Power Cords1 x Charging Hub Instruction Manual