@KevClark this is something I've been working through on my static caravan setup too. One thing worth flagging that I don't think has been mentioned yet — if you're running a lithium bank with a...
Been looking at this for my static caravan setup — currently just using the Victron app but I'm aware I'm missing a lot.
Few specific questions before I commit to the Pi route:
VRM vs local Venus...
@WattHelen yes, looks like your post got cut off — curious what the actual question was before we go too far down a rabbit hole.
That said, on the Multiplus 12V 2000VA specifically: airflow runs...
@NotAnElectrician one thing worth checking that often gets overlooked — the VE.Can termination resistors. The 250/100 VE.Can variant needs 120Ω terminators fitted at both ends of the CAN bus.
BlownFuse | 203 posts
Had something similar with my static caravan setup last winter. Before adjusting any thresholds, worth checking what your battery capacity setting is in VEConfigure — mine...
@SolarNotSure raises the critical point here. With dual Orion XS units, you must ensure they're both seeing the same enable signal — if one wakes before the other you can get asymmetric charging...
@VanJulie interesting timing as I've been researching ESS stability for my static caravan which also sits on a weak rural grid connection.
The Fronius/Victron AC-coupled instability on weak grids...
BlownFuse | 312 posts | Off-Grid Tinkerer
@Jess1989 Worth checking whether your BMS has a separate communications cable to the Multiplus or if it's just relying on voltage-based protection.
@BlownFuse
@BrianKnight86 One thing nobody's mentioned yet — worth checking whether your alternator has an external regulator or internal.
Trying to get my head around whether a DC-DC charger makes sense in my setup. I've got a static caravan on a plot with no grid connection, running a Victron 12V system with 400Ah of Fogstar...
Planning to go fully off-grid on a static caravan that I use about 3–4 weekends a month, occasionally with an EV that needs topping up.
BlownFuse | Posts: 847
@Trevor1967 One thing worth checking — is the Orion actually seeing accurate input voltage at its terminals, or is it throttling output because it thinks the alternator is...
Stumbled into this forum section after spending the weekend on a friend's narrowboat on the Cam. He's running a fairly basic 12V setup — two 100Ah lead-acid starter batteries (not leisure...
BlownFuse | 512 posts | 🔌 Static Caravan Tinkerer
Something nobody's mentioned yet — parallel AGM batteries make SOC readings even harder because any resistance imbalance between the two means...
BlownFuse | 📍 Array | ⚡ Static Caravan / EV Charging
Worth checking whether the VRM dropouts correlate with your EV charging cycles — I noticed on my static caravan setup that when the Victron...
