1…The 14.15v reading was taken while a P-Lax 7455 2 stage converter was charging two fully discharged Interstate Marine/RV batteries.
2…The pictured B/M is plugged into a 12v
power port which is powered only when the isolation switch is in the "use" mode. If the converter is out of the circuit it will read zero.
Plugged into S/P….If the batteries are out, mode switch in "use" it will read 13.2, the float voltage of the IOTA, batt's installed it will read charge voltage.
Un-plugged from S/P batteries installed, "use" mode, it will read battery voltage.
3…12.9 after 8 hrs is still fully charged.
With our IOTA the charge voltage rate will vary between 13.2 & 13.8v.
Now I'm cornfused
so much for simple.