Hi. Just a quick update. I found a 3m USB lead on Amazon and ran the Theta for an hour in streaming mode, recording via OBS running on my desktop pc. All good and the camera got no more than slightly warm. (I’m in Scotland. We rarely do high ambient temperature!) I would be unlikely to use a cable that length on my current project but it does offer more possibilities to hide a laptop should that be needed. As you suggest, I will need to test that a battery powered setup will deliver enough current to the camera but good to know it’s a possibility.
Thanks again for your input. Much appreciated.