ok, the rain let up for a few minutes so I pulled down the high solar sky and put the low-AA sky in its place, just in case I have a future hardware replacement in my future. One thing I noticed was that the SPA came off ‘really’ easily in my hand, although there was no moisture inside.
I reattached the SPA to the Sky and it did not come online. Hitting the reset button through the slots did nothing. Finally gave up and used AA in the Sky (which came online instantly with no reset needed) to verify the Sky hadn’t failed. I’ll let it run that way for a bit and see if it stays stable off batteries.
The SPA is charging hopefully in a kitchen garden window but given the greyness this time of year it might be April before there is a sunny enough day.
update - I see sensor_status=64 (failed wind) so we might find the Sky has failed, but lets let it go through the weekend and see if it loses its mind again.