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Daniel Tamm asked

Configure Multiplus-II without a battery connected?

Hi! I've always configured (VEConfigure) the Multipluses by first running them on battery only (no AC-connected) and then when all is configured, connected to AC.

Currently I have the batteries for the installation at a different location, but I'd like to configure the Multiplus before I go to where the batteries are.

Is it OK to connect the Multiplus to only AC-in (no DC-connected) and configure them without a battery connected? There's no mention on any limitation for this in the manual.

https://www.victronenergy.com/upload/documents/MultiPlus-II_230V/32424-MultiPlus-II___Quattro-II_120V-230V-pdf-en.pdf

In this video Guy Stewart clearly says that it's possible to use either battery power or AC-power at (1:27 in the video) and gives no precautions to that.

https://www.youtube.com/watch?v=6lH3mF2cVaY

Below is a discussion about this but the conclusion is not clear as it gives the impression that you risk tripping the circuit breaker just trying start it for configuration.

https://community.victronenergy.com/questions/102003/can-a-multiplus-ii-be-started-without-battery-conn.html

If there's a problem with inrush current, it would be helpful to know how many amps you should expect on the AC-in.

I'm guessing there's a lot of seasoned installers in this forum so if any of you have experience in configuring with AC-in only it would be nice to hear and if you also have experienced high inrush current tripping the circuit breakers (or not).

Multiplus-IIVEConfigure 3
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