Amazon.com : Gomadic Portable AA Battery Pack Designed for The Garmin VIRB Ultra 30 - Powered by 4 X AA Batteries to Provide Emergency Charge. Built Using TipExchange Technology : Electronics
Garmin VIRB Ultra 30 Dual Charger by Wasabi Power
Garmin Replacement Battery Part No. 010-12389-15 for Garmin Virb Ultra