 "GoPro Rechargeable Battery for HERO3 and HERO3+ (GoPro Official Accessory)" "Camera & Photo Accessories - Page 131 | All Tech Toys"
"This 1180mAh lithium-ion Rechargeable Battery can be used a spare or replacement for GoPro cameras." 
 "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)." 