[rames14]

Nebfox, I have a couple of suggestions. First, spend a few bucks and install a Victron Battery Monitor. That way you can tell what is really going on with your batteries. You will know how much is going into them and what is going out. Second, join the Factory Montana Solar page on Facebook. Matt Wolkins of Future Sales monitors that (they provide the system). And, if you haven’t already done it, download the Keystone app and the manual on solar flex 200. The Jaboni solar charge controllers were failing in 2021 (one of ours did). With a meter you can check incoming voltage, you would need a DC clamp meter to check amperage. Best of luck.