I am trying to determine if adding a USB charging bulkhead to my z6 housing is worthwhile. The Z6 is my new underwater camera, replacing a D90. I’ve never had a a need to replace my d90 battery for several days of my typical dives, usually 3-4 50-60 minute dives a day. I know I won’t be able to that with the z6, but topside shooting when traveling unusually only change/charge the z6 battery once a day, but the camera is not on full time as it will be underwater and I expect more live view shooting underwater than above. I plan to mostly shoot stills and occasional video (maybe 5-10 minutes of video per dive). In order to not require opening the housing between dives, I am considering adding the nauticam usb bulkhead. Does anyone have experience you can relay pertaining to Z6 or Z7 battery life for underwater shooting styles? Thanks.