Changed from 15 mins forced update to 60 mins:
With 15 mins forced updates:
95% to 80% in 8 hours, approx 1.8%/h
With 60 mins forced updates:
93% to 82% in 14h, approx 0.78%/h.
12V discharge was cut in half by going from 15 mins to 60 mins. Makes sense. Frequent updates does drain the 12V faster.