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Great thread, this one. Just to add a practical tip on top of what @DaiWalker61 was getting at — once you've got your system up and running, VRM Portal is genuinely brilliant for digging into...
Ivy Dai in Inverters & Chargers 4 months ago
@LiFePO4Nerd raises a fair warning about SD card wear. Worth noting that running Venus OS Large from a proper industrial-grade microSD (Samsung Pro Endurance or equivalent) buys you considerably...
Hey @OllieRoss74, sounds like a familiar rabbit hole! For a DC-only standalone system you'll want to earth your negative busbar to a proper earth rod driven into the ground nearby — single point...
Nobby78 in Inverters & Chargers 4 months ago
Spent three winters now trying to crack this in my garden office and honestly it's less "off-grid living the dream" and more "watching Victron Cerbo graphs in horror whilst wearing...
Nick Bennett in Garden Offices 4 months ago
Hey @Davo49, good shout raising this one. One thing I haven't seen mentioned yet — have you checked your grid setpoint in the ESS assistant?
Rob Robinson in Batteries & BMS 4 months ago
Been thinking about this a lot lately after rewiring my motorhome setup, so figured I'd throw it open for discussion. Running a Victron Quattro (the single-phase 230V version obviously, not the...
Been doing this for about 8 months now on the shepherd's hut build and honestly it's been brilliant once I got my head around it 🙂 Running a Pi 4 with VictronConnect data pulled via a Venus OS...
@Nessa68 The real culprit with that scenario is usually panel sizing relative to typical daily consumption — most van builds assume average UK irradiance figures that Scotland in autumn simply...
Really useful thread @DorsetDweller, thanks for starting it. One thing worth mentioning that catches people out — make sure your Victron is set to the Lithium preset rather than leaving it on a...
@Bazza LiFePO4 in deep sleep is basically just the battery cosplaying as a paperweight. 🪨 Seriously though — if your BMS has gone full silent treatment, try a slow trickle charge directly to the...
SIE_Electric in Batteries & BMS 4 months ago
Running my static caravan setup with a Victron Orion-TR Smart between a lead-acid starter battery and a Fogstar lithium house bank, and honestly the isolation-except-during-charging approach is...
Van Ken in DC-DC Chargers 4 months ago
Great points all round. One thing worth adding — on newer Sprinters specifically, make sure you're going into the leisure battery side of the vehicle's split charge relay, not directly off the...
@GrumpySpanner and @HazelDawn have the matching spec covered well. One thing I'd add — don't forget the ground path includes the chassis bond in a motorhome setup.
@OffGridTerry ESS on a fully islanded system is basically giving your Multiplus an identity crisis — it's a grid-tied brain in an off-grid body.
Had almost the exact same issue on my van build last summer. Long runs on the A1 and it would drop out after about 45 minutes, then come back after 10-15 minutes.
JH_Power in DC-DC Chargers 4 months ago
Had a similar head-scratcher with my motorhome setup last year when I added a Victron IP65 12/15 to work alongside my existing MPPT 100/50. The big question is always where to connect the mains...
Kev Clark in Batteries & BMS 4 months ago
Been tinkering with my AC-coupled setup on the motorhome this week and hit something I'd love to get other opinions on. Running a Multiplus 2 with a grid-tie inverter AC-coupled on the output,...
Curly in Inverters & Chargers 4 months ago
Worth adding that if you're using the remote on/off pin approach @KevScott mentions, just double-check the voltage logic on your specific Orion-Tr Smart variant — some want a high signal to...
Fell Martin in DC-DC Chargers 4 months ago
Hey @Jock30, interesting one! Just to add to what @GlenWard mentioned — I've noticed with my Fogstar Drift 200Ah that behaviour below 10% can vary quite a bit depending on temperature too.
Chloe Fisher in Batteries & BMS 4 months ago
Mate, one panel on a 100Ah lithium is like trying to fill a bath with a hosepipe pointed vaguely in the direction of the bath — on a cloudy Tuesday in Wolverhampton. Been there with my old setup...