Why is my Victron Multiplus discharging my battery?

[akke]

I’m new to this Multiplus II 48/5000/70-50 device but I can not figure out what is happening.
This is how it is setup:

Grid <> Multiplus II <> 2x Pylontech batteries
Also on AC OUT I have a load (switches, wifi, cameras, …)

Now when I go to Overview I see 100W on the left (Grid) and 88W on the right (AC Loads)
The Inverter is in Pass-thru mode and the battery is Discharging constantly at -9W.

I do wonder why it is discharging while I have grid power and I also wonder why the grid load is about 12W higher compared to the AC load ( even while the battery is also discharging at 9W)

Any help please?

[ricardocello (Rick)]

Assuming you have the 230V 48/5000/70-50.
The zero-load battery power consumption of the device is 18W as shown in the spec sheet.
Which is actually really great number.
This power must be drawn from the battery, not the grid.

Also, measurements of low wattages like that are not particularly accurate.

[Ludo]

Set your float voltage higher, then the charger will kick in and take over your ~10w.