Key Features: HOVERAir X1 PRO and PROMAX Charging Hub. Supports parallel charging of two batteries at once. Fully charges one battery in 45 minutes and two batteries in 60 minutes. Compact design allows you to check battery level with the press of a button. Specs: Charging Temperature: 5AdegC to 40AdegC Charging Speed: Use the Charging Hub and 65 Watt Power Adapter to fully charge one battery in 45 minutes, or two batteries in 60 minutes. Recommended Charging Adapter: PD 65W adapter