Battery drain
I have 2 interstate batteries SRM 24 deep cycle batteries. Have the VictronConnect bmv712 battery monitor. Had to leave our camper sit for 4 days without charging and drew batteries down to 11.6volts...
Forum Discussion
For a battery at rest 12.1V is 50% discharged. Discharged batteries should be bulk charged at 14.8V then absorb charged (charging amps are dropping) then float charged at 13.6V. Do you have a good 3 stage charger?
Your Marine Deep Cycle battery is basically a starting battery and not a true deep cycle battery. Deep cycle batteries are the gold standard for RV house batteries.
Your 1.2A draws means 1.2A*24 hrs * 4 days = 115Ah. Your batteries are about 75Ah so 115/(75*2) = 77% discharged. That's about 11.7V and close to your 11.8V.
Your Marine Deep Cycle battery is basically a starting battery and not a true deep cycle battery. Deep cycle batteries are the gold standard for RV house batteries.
Your 1.2A draws means 1.2A*24 hrs * 4 days = 115Ah. Your batteries are about 75Ah so 115/(75*2) = 77% discharged. That's about 11.7V and close to your 11.8V.
