So, I have a new A6500 with the Nauticam housing. Love them both, FWIW.   However, a big selling point for me on this setup was that the new Nauticam housing has provision for a thin battery pack under the camera that plugs into the micro-USB on the camera and gives you another 2100 mAh of juice. That solves what, for me, was a pretty big limitation on the camera.   Here's the problem and I'm curious if anyone has a solution (or failing that, at least it gets the word out to Nauticam and p