Amazon.com : Wasabi Power Battery (2-Pack) and Charger for GoPro HD HERO2, GoPro Original HD HERO (2010 model) and GoPro AHDBT-001, AHDBT-002 : Camcorder Batteries : Electronics
GoPro Hero 2 Action Camera Replacement Battery CAM-GP001 - Camera & Photo Lithium - Watch Batteries - AA AAA batteries - Rechargeable Batteries - Discount Batteries - Shipped Free in US