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Anker · Part A1229
Anker specifies a 10,000 mAh bank with USB output, and GoPro documents USB-C charging for HERO7 Silver.
Use a USB-A to USB-C cable; the HERO7 Silver side door must remain open while powered.
Wasabi Power
Wasabi Power lists CLUTCH for GoPro cameras, and HERO7 Silver can record while receiving USB power.
Connect through the HERO7 Silver USB-C port; the side door must remain open while powered.
Open the evidence, limitations, and model identity for a single accessory.