Conveniently charge two GoPro batteries simultaneously with this Dual Battery Charger and spare 1220mAh lithium ion battery for your GoPro. It charges via most USB ports. For up to 38% faster charging, use it with the optional GoPro Supercharger (International Dual Port Charger). Dual LED indicator lights display the charging status.
I love this! I always have a spare battery that is charged up and ready to go! Sometimes I bring it on the boat (especially if I'm doing a 3 tank dive), other times I leave it at home so I have a fresh battery ready to go when I want to download my footage!