I needed a connection to my Pocket Wizard which would run a Sony a6600 and provide power via a USB power supply. It worked great on my target lines where they shot for about 6 hours straight. With constant use like this, it doesn't deliver power fast enough to run indefinitely. The battery level will drop during charging/use, but my testing shows that the overall battery life is at least 4x, if not 5x or more. The maximum runtime I need is just over 9 hours, but after the first use I'm sure that I can easily get to this time with the mains adapter connected and a freshly charged battery to start.
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