Hi all! My tiny cabin off grid setup consists of: victron phoenix smart 48v 3000W inverter mppt 150/35 victron controller cerbo gx victron lynx distributor 1000 DC dyness 5.12kwn 48v battery And 6 solar panels that round up to a total of around 2400W. My problem is that I see huge DC power draw,…

Have a read of this FAQ. It is on the FAQ category at the top of DIY. [image] The DC System Power on a Venus device is jumping, erratic or does not match other loads DIY This topic covers the reported power in the DC system tile as shown on a Venus device (such as CCGX, C…

Thank you for that. But on the battery, the total discharge rate reported is the AC load + DC power. This means that the battery draw is inaccurate? Should I watch only for the AC loads?

No, the DC power = Battery discharge - ac power. You have no DC power meter so it is an estimate, that is what the FAQ described. The AC load is accurate, the power flowing into or out of the battery is accurate and the power out of the MPPT is accurate. The DC load is not accurate, it is the calc…

that’s interesting, could inefficiencies and cable losses account for such a high wattage? thank you for all the answers

If you do not have any DC loads other than the Cerbo then disable the DC loads display, they add nothing other than confusion. Cerbo will take something like 6W. The inverter has a minimum 25W load and the losses are approx 10% for a resostive load, so for a 1000W load you have losses of around 12…

I just discovered something else. I am only powering one AC load through a smart plug that shows power draw. Looking at the power draw reported by the plug (around 240-250w) and the PV charge, it makes sense to see around 16w on the battery. It’s just the AC load reported in VRM that are off. Is t…

Victron Phoenix off-grid huge DC draw with no DC loads

DIY

pwfarnell 2 July 2025 13:15 2

Have a read of this FAQ. It is on the FAQ category at the top of DIY.

Topic		Replies	Views
Phoenix Inverter shows negative AC outpit DIY beginner , offgrid , phoenix_inverter , cerbo_gx	2	70	2 November 2024
Issue with AC Readout on Cerbo GX DIY beginner , offgrid , gx_device , cerbo_gx	1	66	5 September 2025
Cerbo Dashboard "DC Power" Reading DIY diy , campervan , gx_device , cerbo_gx	1	217	22 March 2025
Wrong DC power in vrm DIY expert , offgrid , vrm , phoenix_inverter , dc_system	0	97	16 September 2024
DC Load Displayed on Ekrano DIY diy , ekrano_gx , cerbo_gx	2	90	28 August 2025

Victron Phoenix off-grid huge DC draw with no DC loads

Related topics