The SyncBac PRO for HERO4 and the SyncBac PRO for HERO6/7 Black can be used to pass power through to the HERO4 Black or Silver and HERO7 Black cameras respectively, when the SyncBac PRO is connected to an external power source.
If you are considering using the power through option running on the mains supply, we would advise using on of GoPro's recommended chargers.
If you would prefer to use a power bank, you can view our recommendations here.
Unfortunately, this is not an option for the HERO6 cameras, due to instability in the GoPro firmware when external power is connected. To avoid potential hardware crashes, we made the decision to remove this feature when the SyncBac PRO for HERO6/7 Black is connected to a HERO6 camera. All other functionality remains the same.