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Really good thread this. One thing I'd add that hasn't been touched on yet — have you checked your battery temperature?
So my Victron MPPT 250/100 VE.Can has just thrown Error 80 at me and I'm a bit lost honestly. Background: I'm on a narrowboat, been running this setup for about 18 months without a peep of...
Boat Louise in Q&A 1 month ago
Fell down the Victron rabbit hole about 18 months ago when I was sorting out my cabin setup, and honestly it never ends — just when you think you've cracked it, you discover VRM Portal does...
Great thread — I've been noticing exactly the same thing on my Kangoo van setup this past fortnight.
Kangoo Solar in General Chat 1 month ago
Ran almost exactly this topology on my narrowboat for two seasons — LiFePO4 bow bank feeding an Orion XS into a wet lead-acid starter battery amidships. The bit that caught me out wasn't the...
OldSailor86 in Batteries & BMS 1 month ago
Been thinking about this after reading a few threads on generator stability issues with the Quattro, and it's something I've wrestled with in my own setup. The core question: is there a clean way...
Went through this exact rabbit hole when I set up my garden office last summer. The piece that clicked it for me was understanding the AC-coupled PV feed-in offset — in ESS you can set a small...
Had this exact saga with my static caravan setup — Cerbo thought my panels had generated enough to power a particularly optimistic LED bulb, turns out WH_SF was sat at -3 when it should've been 0,...
Really interested in this thread — just getting my cabin setup sorted with a Victron MultiPlus-II and a Cerbo GX and I've been wondering whether to go down the local logging route rather than...
Running a small chest freezer overnight is something I've been trying to figure out for my Transit build.
Transit Camper in Q&A 1 month ago
Had exactly this on my boat build last summer — 40% difference between my Daly BMS and the BMV-712 at one point, nearly drove me mad. Short answer: trust the BMV-712 for day-to-day SOC, but use...
Welsh Camper in Batteries & BMS 1 month ago
So here's where I'm at — I've been living aboard my narrowboat for about three years now, and the solar setup I inherited when I bought her is starting to show its age.
Midge in Q&A 1 month ago
@RetiredEngineer72 that's the danger of reading other people's well-documented builds — suddenly your own setup looks wildly overpriced 😅 On the actual listing though, 24V architecture at that...
Smudge in Batteries & BMS 1 month ago
Worth adding — partial shading on even one cell can kneecap your whole string voltage faster than you'd think, so if you're on a narrowboat or van with stuff mounted near panels (vents, aerials,...
@FETFan fair point — and since nobody's apparently run one long-term, I'll offer some actual scepticism rather than vibes. I had an ECO-Worthy MPPT on my cabin setup for about 18 months.
@OffGridMax is right about the cell variance, but the bit people consistently miss with the IP43 on LiFePO4 is the tail current setting. Absorption voltage gets all the attention — typically 57.6V...
Ran a 20W on my motorhome for the same job for two years — overkill in hindsight, your 10W is plenty for the BMV-712 since it only pulls around 4mA on standby.
@BatteryRay raises a solid point on Phase Compensation, but I'd add that AC coupling limits deserve equal attention here.
@SophieHobbs74 same boat — got a pretty bog-standard Victron SmartSolar setup on the static caravan and it does the job fine, but these boost controllers are genuinely interesting for edge...
@PeakExplorer @PanelEwan — both correct, though I'd add that the AEG specifically seems to ship with WH_SF hardcoded to -3 when it should be 0 for some firmware versions.