Ok, so I kicked both cameras down to 1080p instead of 4K, figuring it would reduce the heat build-up. And I managed to get the expected 4+ hours out of camera #1. Great!
However, camera #2 is still having problems – it would shut down as soon as I hit record. I tried doing a factory reset, I tried swapping SD cards, but the problem appears to be that it just doesn’t like the sidecar battery. It doesn’t matter which sidecar battery I use – as soon as I turn it on, it turns off. Take off the sidecar battery, and it’s quite happy recording for 100 minutes.
I think for this weekend I’m going to try using the sidecar battery on camera #1, but just going bareback on #2. I’ll probably put #2 on the bow facing back, because that view is usually only important in the first part of the race. When I get home, I’ll see if GoPro will admit there is a problem with their camera, although since it only happens with a third party battery I don’t have high hopes.
use a “sidecar” battery for my GoPros to get some extra battery life.
And when I was using them with GoPro Hero 5s, I was frequently getting
3.5-4 hours of video recording. But at the Round The Mountain race, one
of them shut down after less than an hour (I’d turned them both on
really early hoping to capture some of the flavor of the start area, and
it ended up shutting down when I was warming up). I took them out for
another test and I got 99 minutes out of the first and 120
minutes out of the other. In both cases, the sidecar battery appears
empty or nearly empty, but there’s plenty of life left in the “built-in”
battery. I’m able to turn them on and record another 80-90 minutes
after I finished.
know if it’s an overheating problem, or what. Unfortunately the sidecar
requires both it and the camera to be in a clear plastic case, which
can’t help with the heat problem. I wonder if I should cover the whole
thing in tin foil except the lens area?