I had a long conversation with the folks at AM Solar about my situation today, and I’ve decided to go with the Victron battery monitor to I can being testing to see what kind of individual loads I am putting on the battery. They suggested if I could accurately measure amp hours used, and compare it to what my batteries are rated for at 100% charge, I could figure out if my batteries might be bad. They are only a year old, so hopefully that’s not the issue, but there seems to be no other good explanation for what is happening.
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