Hi guys,
I finally finished my campervan build and found my two new batteries to be failing.
My conclusion is that the batteryprotect never activates because the minimum voltage is not met during daytime.
I have a Multiplus 12/2000/80, a MPPT 150/60 (with 2x200w PERC) and 2x 105Ah Calcium traction batteries.
We have no sun most of the time this time of year, but the MPPT is giving between 13 and 14 volts, so starts charging with allmost no current. I draw more current than it gets, so the batteries are draining without the BMV seeing the voltage drop below 11.9v.
What can i do about this and protect my (second) new batteries?