Amazon.com : Complete AC/ DC Power Kit for GoPro Hero 3+ and Hero 4 (Not compatible with Hero 3 & older) Includes USB Power Cable,Water-resistant Backdoor Passthrough,and 3 Adapter Plugs (US &
Amazon.com : Switronix DVGP3USB Battery Eliminator USB with 10-Feet Power Cable (Black) for GoPro 3/3+ : Electronics
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Battery Eliminator 24hr Power 30 Pin for ALL GoPro Hero3+Hero4 Black Camera's | eBay
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Amazon.com : Switronix DVGP4USB GoPro 4 Battery Eliminator USB Power Cable, 10-Feet (Black) : Electronics
5V Battery Eliminator for GoPro® HERO® 3 and 3+ - Group B Distribution Inc