question

Hi XMD

As I dont have that unit I cant give you the Answer. and even if I did I would have to put a amp meter in the line myself as well to get the readings.

but as you do have it, put a amp meter in line with the battery feed and test it yourself its not that hard.

in relation to the how the switches work I would presume its the last one that you used would take priority. but what ever reality is testing will only tell

Sorry to be so Blunt, however I dont work for victron and am only helping out from time to time,

so Thats my answer anyway .

Others maybe able to give you more information, if they have a unit themselves

Thanks, Paul - I was hoping this was all documented somewhere, but if not, I'm happy to do some sleuthing.

I have a clamp-on DC ammeter but I suspect it doesn't have a fine enough resolution to detect 1W vs 5W.

My multimeter has a 10A setting, but I'm a little worried about the inverter inrush current blowing up the meter. I think this should work: Turn on inverter (while connected to battery), connect multimeter in parallel, then disconnect battery, leaving only the multimeter connected. In theory that shouldn't blow up my multimeter. We'll see!

I did some testing today, and was able to use my clamp-on DC ammeter so it was quite easy.

When the switch is ON, the unit pulls about 0.5-0.8 A which roughly matches the specifciations which claim 6.5W idle for the 12/800 model.

When the switch is ON, but I've used bluetooth to turn the inverter OFF, then it pulls only 0.05A (or about 0.6W). In this mode, bluetooth remains active, so it's easy to switch the inverter on/off using my smartphone.

Conclusion: having the inverter switched ON, but turned OFF using Bluetooth is a mode that has some appeal. Since the idle draw is less than 1 watt, it would take over a month to drain a typical 100AH house battery.