48v Multiplus-II input current limit from AC: arbitrary minimum threshold?

Q&A and troubleshooting
, , ,
1

I have a Multiplus-II 48/3000/35-50 120v inverter/charger running on a very small off-grid cabin setup. I plan to use solar to charge the batteries almost all of the time, but in case the batteries get very low, I’d like to be able to use my very small Honda eu1000i gas generator to charge the batteries. The output of the Honda generator is 8A at 120v.

When I go into the settings of the Multiplus in the Cerbo-GX, I am able to set the input current limit to 8A, but when I try to save the setting, it reverts to 9.5A.

-Am I understanding correctly that the Multiplus will attempt to draw a maximum of 9.5A @ 120V with that setting?

-Is the 9.5A minimum charge current some sort of necessary value, or is it arbitrary?

-Is there any way that I can make 8A stick as the value?

video of cerbo-gx reset

2

If you search for minimum input current limit you’ll see this is a common question. The Multi’s manual indicates the minimum AC input current limit if PowerAssist is enabled. If you want to be able to set a lower AC input current limit just turn off PowerAssist. That has its own implications but could be a solution for you.

1 Like