1、3 Channel Charger: The battery charger features three power slots, allowing you to charge three batteries simultaneously with a USB C cable. When not in use, you can store a storage card in the card slot. 2、Fast Charging: The battery charging hub input 5V 3A, output 4.4V 1.5A (maximum); 4.4V 1.1A (min), with each charging slot working independently. 3、Intelligent LED Display: The charging station is equipped with safety features such as overcharge, over discharge, short circuit, surge, and overvoltage, ensuring your safety during use. 4、Longer Battery Life: The batteries have approximately 27% higher capacity than the previous version, allowing for an increased runtime of about 67%. The 2500mAh high capacity batteries enable recording at 5.7K30fps for 120 to 135 minutes. 5、Safety in Use: The batteries have built in safety circuits for overcharge safety, overcurrent safety, and over discharge safety, ensuring the safety of your equipment and battery longevity. Item Type: Battery Charger for X4 Material: Plastic, Electronics Application: for X4 Input Voltage: TYPE C 5V3A Output Voltage: 4.4V 1.5A (Maximum); 4.4V 1.1A (Min) Battery Replacement: Application: for X4 Battery Type: 2500mAh Lithium Battery x 2 (battery included) Capacity: 2500mAh Rated Voltage: 3.85V Charging Voltage: 4.4V 2 x Replacement Batteries 2 x Portable Battery Cases 1 x Battery Charger 1 x Power Cable for Charger 1 x Manual