Kastar Battery (2-Pack) for GoPro HERO4 and GoPro AHDBT-401, AHBBP-401 Sport Cameras Kastar Brand Replacement Lithium-ion (Li-ion) Battery. High Quality, Long Lasting and Manufacture Price. Kastar Battery 100% decoded and 100% Compatible with the Original Batteries and Chargers. Kastar Battery High Capacity. Use high quality Japanese Cells for longer battery life with no Memory Effect. Use Integrated Japanese microchip which can prevent the overcharge and overdischarge. The Battery Include 30-Day Money Back and 3-Year Manufacturer Warranty.