AnOldUR

My guess would be a voltage drop from the VE.Bus Smart Dongle. Could be wire size or a bad connection somewhere. I had a situation where water got into an inline fuse holder. It resulted in corrosion… (View Post)

Voltage from a solar panel should be higher than the battery rating. A typical voltage will be over 20V's when in sunlight and not connected to a controller. Have you checked the voltage coming from … (View Post)

Agree with the two posts above. We went with two 100Ah LiFePO4's a while ago, but if I were to do it today, I'd go with a single larger LiFePO4 of at least 300Ah. This past winter I upgraded my 100W … (View Post)

That 5V difference is between the solar panel output and the battery. I believe it uses the open circuit voltage (Voc), not the maximum power voltage (Vmp). The mppt monitors the Voc before any curre… (View Post)

I was questioning that also. It would be interesting to hear from @pthomas745 what he meant by, " I think it ran almost constantly". Is there a condition that could cause the element to not… (View Post)