 "CND1133B001AA - Canon CB-2LX BATTERY CHARGER" "Camera & Photo Accessories Page 2121 | All Tech Toys"
"The CB-2LX Battery Charger charges Canon NB-5L batteries, allowing you to charge an additional battery for your digital camera." 
 "GoPro Dual - battery charger USB" " GoPro USB AHBBP301 Digital Camera Accessories CDWG.com
"Conveniently charge two GoPro Li-ion batteries simultaneously with the dual battery charger. Featuring USB compatibility, you can power it with most standard USB chargers, the GoPro wall or auto charger or a computer. Dual LED indicator lights display the charging status of both batteries: in process (amber) and fully charged (green)." 