Powerextra 4 Pack Li-ion High Capacity 1500mAh Replacement Batteries With Charger for GoPro HERO4,GoPro AHDBT-401, AHBBP-401(Free car charger available now) Powerextra products are CE certified, tested by manufacturer to match OEM products Includes 4 batteries and charger power your GoPro HERO4 camera Rated at 3.8V and 1500mAh for a longer running time. Charging at any time will have no effect on the battery Products come with our Powerextra is 30 days money back 12 months limited guarantee against manufacturer defects from date of purchase,and 24 Hours friendly customer service!