Amazon.com: 2 Replacement Batteries AHDBT 501 for GoPro Hero 5, 6, 7 Silver and Black Edition Includes eCostConnection Microfiber Cloth : Electronics
Amazon.com : Gomadic Portable AA Battery Pack Designed for The GoPro HERO5 Black - Powered by 4 X AA Batteries to Provide Emergency Charge. Built Using TipExchange Technology : Electronics
GoPro Rechargeable Battery for HERO5 Black | Dick's Sporting Goods