Newmowa Replacement Battery (2-Pack) Dual USB Charger Kit GoPro Fusion INCLUDE: 2 batteries, 1 dual charger, 1Micro USB cable CAPACITY: Each battery features 3.8V, 2800mAh WORK FOR OEM BATTERIES OR CHARGER: Batteries and charger are fully compatible with GoPro Fusion CHARGE 2 PACKS BATTERIES SIMULTANEOUSLY: Innovative design allowing for two batteries being charged at the same time and Two Independent Smart LED light indicated RED when charging and GREEN when completed All items include a 2-year warranty