Just to note:
During SCP, "cactus" wasn't charging for the first 18 days, during which time Vmote dropped from 12.9->11.3V, or about 0.1V/day.
I note that Tsoil.a2, which doesn't have a solar panel, over the last 2.5 days has dropped from 12.8->12.5, or about 0.1V/day.
It is nice to see consistency...