ok last report on the experiment until cover gets here.
After work yesterday the sun was out full and the controller read 13.1. cooler always 31-37 it seems. The panel was giving 3.00 amps to battery @ that time.
I went into the cooler a few times at intervals to get . Resituated a large water jug over to the freezer/cooler compartment. That's the only compartment where the cold is applied. Others compartments are by circulation only. The temp reading is from the freezer/cooler compartment. That's Important. After that I read the controller one more time @ 730 or so and it read 12.6. I left the maxx air fan on #3 and left it all night.
This morning it was 12.3. The sun was almost going to hit the panel through the trees a bit as I left.
Just info. Almost could run perpetually with full sun but not quite. See what the cover does and then maybe install 2 new batteries but that could wait a bit.
Report back in a week or so on the cover.