Synergy Digital Camera Battery, Compatible with GoPro HD Helmet Hero, HD Surf Hero, Hero, Hero 2 HD2-14, Hero HD 1080p Digital Cameras Camera Battery (3.7, Li-ion, 1100mAh) - Walmart.com - Walmart.com
Review: GoPro HD HERO2 | Mountain Bike Reviews Forum
GoPro Hero 2 HD2-14 Camera Battery - 1100mAh Li-ion 3.7V – Batteries Global
Best Buy: Digipower Rechargeable Lithium-Ion Battery for GoPro HERO7 Black, HERO6 Black, HERO5 Black & HERO RF-6H50
GoPro HD Hero2 Battery Replacement - iFixit Repair Guide
Best Buy: Digipower Rechargeable Lithium-Ion Battery for GoPro HERO7 Black, HERO6 Black, HERO5 Black & HERO RF-6H50