Not a big deal, just trying to understand it. I have 2 interstate batteries, connected to a 25 watt panel. Meters on both input and output side. As of this morning, batteries were at 11.75v or so. This afternoon, dead at 1.25v. The load was barely anything, just a camera. Had this setup for a month or so, with varying loads, just to see what happens. Again, no loss, just trying to be educated. Anything i can look for, postmortem?