Specification : Battery Type: Li-ion Capacity: 1800mAh Voltage: 3.85V Replacement Battery for GoPro Hero 9 Black camera/ GoPro Hero 10 Black camera Led Indicator： There are three light on the front of the charger and one light beside the Type-C Port on the back. After power-on: the light next to the Type-C port on the back of the charger is always blue. When charging: lights on the front are red. When full charged, the front lights are green. What you get: 2 x 1800mAh Replacement Batteries 1 x 3-channel USB Charger 1 x Type-C USB Cable 1 x User Manual Read more Battery Type: Polymer Li-ion Battery Capacity: 2X1800mAh High capacity Voltage: 3.85V Charger Input: 5V / 2.1A Charger Output: 4.4V 700mA (each port) Working Time: 5K/30FPS about 90 mins ; 4K/60FPS about 72 mins ; 4K/30FPS about 112 mins (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { P.when('AplusModules-module-16-tech-specs').execute(function(resizeSpecTables) { resizeSpecTables('aplus-index-3', 'aplus-tech-spec-table', 'aplus-tech-spec-hide-loading'); }); })); LED Light Indicator: It charges 2 batteries at the same time. When charging, charger dock flash RED; when full charger, charger dock flash GREEN. Easy to carry: It designs small and compact, which makes it easy to travel with. No memory effects: No memory effects can protect your camera well, and provides super Long Time Recording. Features six layers of protection: Over-charging, short-circuit, high-temperature, and surge protection with high-quality, fire-resistant construction, ensure complete protection for you and your devices. Read more