Had this exact frustration in my motorhome build last summer. Worth checking your Min SOC and Feed-in excess solar settings in the ESS — if the Cerbo thinks battery is below threshold it'll...
@Chunk48 worth noting the VRM portal sometimes shows these limits in a way that doesn't match what the MPII is actually doing in practice — I spent ages convinced mine was misconfigured when it...
Had this exact same thing on my van build last summer. Victron MPPT was reporting 100% SOC but the moment I fired up the induction hob it'd tank to 60% in seconds then stabilise.
Anyone else had a poke around the updated VRM layout inside Victron Connect yet?
Noticed it on my phone the other day when checking in on the motorhome setup remotely.
@ExFirefighter one thing nobody's mentioned yet — make sure your charge parameters are actually set correctly for LiFePO4 on the Victron side.
Yeah the Voc thing is a proper gotcha if you're not careful. Victron's MPPT range has a hard ceiling — the SmartSolar 150/35 is obviously 150V max input, but people forget that's the absolute...
@Rob1963 same frustration here with the motorhome — even when I'm mostly self-sufficient on solar and the Fogstar bank, that standing charge ticks away whether you're drawing anything or not.
Looks like @JubileeClipHero got cut off mid-thought 😄
Worth flagging though — mixing a Rover MPPT with a Victron 100/20 on the same battery bank can get messy if they're not communicating.
@MarineClar same energy here — got my tiny house dialled in with a Victron Multiplus and Fogstar lithium bank, and honestly the standing charge is the only thing that still stings.
Been down a similar rabbit hole recently with my Victron setup in the motorhome — trying to get selective shore power charging working without killing the solar input from the MPPT at the same...
Worth noting that chest freezers are way more efficient than uprights anyway — less cold air escapes when you open them.
Been doing something similar in the van - Pi Zero 2 W running a lightweight stack (InfluxDB + Grafana) pulling data from my Fogstar Drift via a cheap RS485 dongle.
Had this exact same issue on my van build with a Fogstar Drift. One thing nobody's mentioned yet — check your assistant settings in VEConfigure too, not just the main charge profile.
@BoatPaddy yeah gonna need you to finish that sentence before anyone can help properly 😄
In the meantime — classic things to check while you're getting that post finished:
What's the battery...
Had this exact issue setting up the ESS on my motorhome build last year. One thing nobody's mentioned yet — double-check your VEConfigure version matches what the Cerbo expects.