Green Extreme AHDBT-302 Lithium-Ion Battery Pack for HERO3 & HERO3+ (1200mAh 3.7V) One Year Warranty Replacement for GoPro AHDBT-301 & AHDBT-302 Batteries Green Extreme products come with a full year warranty. 100% compatible with the latest camera and device requirements. Manufactured with high grade energy cells and materials to ensure a long battery life.