This Dual-Battery Charger with Two Enduro Batteries for HERO9/10/11 Black from GoPro outfits you with two high-powered Enduro batteries and a dual-battery charger to expand your power capabilities for your HERO9, HERO10, or HERO11 Black. The Enduro battery has a 1720mAh capacity and increases your recording time. Its built for performing in colder temperatures down to 14°F. Both batteries charge 13% faster than standard GoPro batteries. The included dual-battery charger can charge both simultaneously and features a USB input port. Using the separately available Supercharger can reduce charging time by 38%. LED indicators display the charging status of both batteries.