Victron 100/50 seems to skip Absorb stage of charge
bigbillsd Registered Users Posts: 24 ✭✭
I just finished my second night of dry camping. Yesterday morning my batteries were down a bit below 70% SOC prior to sunrise in the New Mexico desert. By about 11:30am there was a steady 30+ amps going into the battery and based on my Trimetric were close to 80% SOC, close to moving to the Absorption stage. At 12:15pm, 45 minutes later I checked the controller and it was in Float putting in an amp or 2. Based on Victrons chart for Absorption times, it should have run for 4 hours. I see no way to tell if it ran for 5 minutes, 30 minutes or skipped it completely.
Consequently the batteries never got up to 81% SOC even though I had almost 6 more hours of bright 5000' elevation sunshine. I have the controller set to 6 hours for Absorb, but I think that is just the max and the length of that stage is controlled by the starting voltage of the batteries in the morning for what the manual states. I'm starting to wonder if there is something wrong with this controller or just made a horrible decision buying a Victron controller.
Is there a way to force the controller into absorb? The float stage won't even keep the amperage coming from the batteries even, as we are drawing more than its charging.
4 each Renogy 160w Solar Panels mounted flat on RV roof, Serially connected @ ~80v, Victron 100/50 MPPT controller. 520AH LA batteries @ 12volt, 2800w PSW Magnum Inverter. Bogart Trimetric.