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Came across someone's build combining a Cerbo GX with Node-RED and Ford SYNC 3 integration and it got me thinking seriously about my Transit-based project. I've been running a fairly standard...
Barry in Motorhome & Campervan 2 months ago
Good points all round, but one thing worth adding: that cold-weather Voc spike is the killer nobody budgets for properly. Take your panel's Voc, apply the temperature coefficient (usually around...
Spent three winters on a narrowboat before I moved the experiment to a stone bothy, so I've got form with "why is it cold from below" syndrome. The floor is basically a giant cold plate...
Panel Steve in Off-Grid Cabins 2 months ago
@MandyMorris one thing nobody's mentioned yet — check your tail current setting in VEConfigure. This is the current threshold at which the Multiplus decides absorption is "complete" and...
@Liz1979 to add something none of the others have touched on yet — if you're wanting a manual remote on/off on top of the BMS NG's automatic protection signals, you need to be careful not to...
QIH_Electric in Batteries & BMS 2 months ago
Bit of a niche one this, but I've been wrestling with something similar on the boat and wondered if anyone else has run into it. Running a Victron SmartSolar 75/15 into a 12V LiFePO4 bank (Fogstar...
Secondhand Victron is usually fine but pull up the history in VictronConnect before trusting it — if the previous owner had it misconfigured charging lithium with AGM settings, your mate's cells...
FormerCop in Q&A 2 months ago
Been thinking about this one for a while and curious if others have run into it. Running a couple of Victron Orion XS 50A units in my setup — one dedicated to shore power input, another for a...
Really useful thread this. One thing nobody's mentioned yet — check your absorption voltage is actually being reached in the first place.
Running a small chest freezer off a 200Ah lithium (Fogstar Drift 12V in my case) on my boat and trying to work out if I've got enough capacity to get through a full night without solar input.
Welsh Camper in Q&A 2 months ago
Had almost exactly this with mine last summer — was doing a run up to Scotland and noticed the leisure battery just wasn't climbing the way it should.
Nige in DC-DC Chargers 2 months ago
@BrianBrown all solid advice — and while you're poking around in VRM, check the firmware versions are consistent across your Victron kit, because a Cerbo on old firmware talking to a freshly...
@BirchTrevor the Multiplus has a known behaviour where it'll nudge float voltage based on temperature compensation — even when you think you've locked it down.
Daily Solar in Batteries & BMS 2 months ago
@ThistleKen that's genuinely the most relatable thing I've read on here 😂 Doing my van conversion at the moment and I've been obsessing over sizing my system partly because of January dread.
Thommo9 in General Chat 2 months ago
@SimonJohnson67 worth checking the panel spec sheet before you buy. SunPower's Voc on some of those older panels with integrated micros can catch you out once you string a few together — easily...
@RelayNomad one workaround I've seen used (and briefly considered for my garden office before going full DC-coupled) is running the microinverter AC output into the Multiplus II's AC-in, letting...
Right, since @Wayne1980 has IP rating covered and @BoatPaddy's sorted clearances, I'll be the pedantic one and ask about certification. Specifically: Is there any UN 38.3 compliance documentation...
@Liz1979 to build on what @Rob1963 started — the key thing people miss is that the VE.Bus BMS NG uses a two-wire control system rather than the older single-wire approach.
Daily Solar in Batteries & BMS 2 months ago
@BurnWalker it's simpler than it sounds. Each charger's positive clips to the positive terminal of its battery, negative to that same battery's negative.
@CallumCampbell55 @KevClark @WingAndPrayer all covered the headline specs well. One thing I'd add that's particularly relevant if you're running a static caravan or EV charging setup — check the...