With the Insta360 X4 Fast Charge Hub, charge up to three X4 batteries at the same time. The X4 Fast Charge Hub comes equipped with an intelligent charging management system that charges each slot independently to prevent overcharging. Supports PD fast charging, charging your X4 battery to 80% in 26 minutes and 100% in just 43 minutes (with 12V/3A power adapter and 2290mAh X4 battery). With the X4 Fast Charge Hub's logical lighting system, know your X4 battery status at a glance. Each X4 battery comes equipped with a battery storage case with built-in memory card organizer slot for peace of mind. Get lasting endurance in temperatures as low as -4ºF (-20ºC) and as high as 104ºF (40ºC). In the Box: 1x Insta360 X4 Fast Charge Hub, 2x X4 Batteries, 2x X4 Battery Storage Cases, 1x Type-C to C Cable, 1x Manual, and 1x RiseUP Cleaning Cloth.