BFL13, Thanks for your response. I have a meter and have been monitoring the wattage coming down from the panels. Yesterday afternoon I read 13.8 so charging does appear quite good overall.
For sure the inverter has never been left on. The key so far seems to be that Systems Monitor on the wall. It comes and goes. I know my tank cycles very well and seldom use the idiot lights on systems mon for tanks but regarding battery health, sometimes it shows what would appear a normal reading for batt and then suddenly it shows just one red light at the bottom. I hit it several more times and it returns to normal again. What I am wondering is this. When it has a failure and shows no or low signal, is that actually affecting the charging system or is it merely a charge "viewing" problem?
