GOPROAHDBT-201/301. With LED charging indicator to show battery status. When the charger is powered, battery in socket, screen lights on. Use the micro USB cable and connect a USB plug to any 5V power source, such as to laptop, to AC adapter, to car charger, to power. (USB plug is not included.) Perfect for travel and home use. Portable and convenient to carry. Specifications: Material: ABS Applicable Battery: For 7.2V-7.4V Li-ion battery Compatibility: ForGOPRO AHDBT-201/301 Input: DC 5V, 1~2A 10W Output: DC 4.24V, 600mA 2.5W Connect Main Power: To Laptop; To AC Adapter; To Car Charger; To Power Bank Item Size: 8.5 * 5.4 * 1.8cm / 3.3 * 2.1 * 0.7in Item Weight: 30g / 1.0oz Package Size: 11.5 * 10 * 2.3cm / 4.5 * 3.9 * 0.9in Package Weight: 65g / 2.3oz Package List: 1 * Li-ion Battery Pack Charger 1 * USB Cable 1 * User Manual (in English)