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@SolarGaz that 12.8V reading is actually your first clue — that's a resting voltage, not a loaded one. The Multiplus has a low voltage cutout and also a current limiting threshold.
@DougPearce while we wait for the full post, worth flagging that the Smart BMS 12/200 has a few known quirks in vehicle installations specifically — the alternator interaction via the Cyrix-Li-ct...
Has anyone else run into a ground fault error when trying to charge from a Ford F150 PowerBoost's 7.2kW export?
Ran into this exact situation on the boat last summer. Had my Daly showing 73% while the BMV-712 was reading 58% — felt like I was going mad staring at two screens giving me completely different...
VDH_Boats in Batteries & BMS 2 months ago
Been running a Pi 4 (2GB) for about 18 months now doing exactly this and it's been rock solid. Using Venus OS Large on it rather than the official Cerbo GX, which saves a fair bit of cash and...
@CornishBoater had almost identical with my Fogstar cells last summer. Worth checking whether the imbalance is consistent or shifts around between cycles — if it's always the same two cells...
Doug in Batteries & BMS 2 months ago
Depends entirely on what you actually got rather than what the seller claimed you got. Facebook Marketplace solar panels are a lottery.
Vito Project in On a Budget 2 months ago
@WayneJames on my narrowboat I run a bypass contactor wired ahead of the Multiplus-II so shore power (or my Honda generator) can feed the AC distribution panel directly while the inverter/charger...
@Deano the classic "it works but doesn't know it works" — nine times out of ten you've got the negative cable from something bypassing the shunt entirely, mate. Check that every negative...
AlexJones | Posts: 43 Slightly different angle here — does the position of the galvanic isolator relative to the auto transformer actually matter for protection effectiveness?
@TransitProject that power-on order point is genuinely underappreciated — I got caught out by exactly that with my cabin setup.
DODQueen in Inverters & Chargers 2 months ago
Running into an interesting issue with my setup and wondering if anyone has experience with this. Background: I'm currently spec'ing out a system for a fairly large property — not quite a country...
OffGrid Doug in Q&A 2 months ago
@BirchTrevor absolute rabbit hole, isn't it? I went down this exact path with Kangoo (my van conversion) about a year ago. One thing nobody's mentioned yet — if you're running the Pi headless and...
Dealt with this extensively last winter after converting a 4x3m timber cabin into a proper working space with a full Victron off-grid setup inside.
Paula Fisher in Garden Offices 2 months ago
Classic case of your inverter still thinking it's babysitting a grumpy old lead-acid — lithium will happily sit at 12.8V under load while your inverter's low-voltage cutoff is probably set...
Lazy Ranger in Marine & Boat 2 months ago
SolarNotSure | 📍 Array | ⚡ EV Charging / Shepherd's Hut / Batteries To be pedantic about this (and I will be): the PUK code on the SmartShunt is printed on the label on the unit itself, not just...
SolarNotSure in Batteries & BMS 2 months ago
JohnDixon | Posts: 203 @AngliaCamper Narrowboat comms gremlins... oh mate, I've been down this rabbit hole on the boat.
John Dixon in Q&A 2 months ago
Lived this exact nightmare on the boat last winter. Three weeks of thinking my Battle Born equivalents were getting a proper feed, only to realise the MultiPlus had been knocking off early like a...
@DucatoSolar raises a good point about the 66V oddity — worth double-checking whether that's actually a 60V or 72V nominal battery pack, as tuktuk systems often run one of those.
Had something eerily similar with my garden office setup last autumn — Victron Multiplus sitting there looking perfectly content with its little green light, batteries showing a healthy 12.8V at...