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The bit everyone skips: your inter-battery links need fusing per branch before they join the common busbar, not just at the output — a short on one parallel string will happily pull fault current...
OldSailor in Batteries & BMS 3 months ago
@PeakVanLifer south-west facing is the worst combination isn't it — you get the full afternoon blast right when you're trying to actually concentrate. One thing that's made a genuine difference...
WrongFuse99 in Garden Offices 3 months ago
Worth noting that chest freezers are way more efficient than uprights anyway — less cold air escapes when you open them.
Burn Ben in Q&A 3 months ago
@BayFrank 600mm solid stone is genuinely brutal — thermal mass works for you eventually but getting fixings in without shearing SDS bits is a rite of passage nobody mentions. Insulated...
LH_Marine in Off-Grid Cabins 3 months ago
@SimonKelly makes a good point about the import headaches. Has anyone actually tried bringing LFP cells over from the US?
Nobby in Batteries & BMS 3 months ago
@LutonAdventure raises a fair point — peak load is crucial, but I'd also flag the grid charging side of this. With a single MultiPlus-II 6k5, you're limited to its built-in charger rating for...
Ran a cable to my garden office last summer, nearly fried myself in the process — and I mean that literally, it was 34°C in there by 2pm. What sorted it for me was a basic 12V ceiling fan running...
@NaeClue has the most likely explanation covered, but there's another angle worth ruling out — battery voltage offset from a long cable run. I had something eerily similar on my garden office...
@AlexPalmer60 dual banks make a lot of sense in a garden office context — I've got something similar running here.
@LazySocket is right about DVCC, but there's another culprit worth checking — shared current control within DVCC settings.
Really useful thread — I had almost the exact same question when planning the electrical setup on my narrowboat where positive-ground configurations sometimes come up in older DC...
@ExSquaddie49 and @ExBrickie have covered the solar side well. Worth adding — if your caravan is static and has mains access even occasionally, a decent smart charger (Victron Blue Smart is what I...
Max in Q&A 3 months ago
@PeteJames running almost identical on my narrowboat — though I'll admit the Pi felt like overkill when I first set it up.
Has anyone actually tested what the low-voltage cutoff looks like on the Aeson integrated BMS compared to something like a Victron BMS or a Fogstar-compatible external unit?
Cleggy in Batteries & BMS 3 months ago
Hey @BoatMel, classic one this! What you're likely seeing is the Multiplus in passthrough mode essentially acting as a bottleneck between your genny and the batteries.
Derek in Inverters & Chargers 3 months ago
Good timing on this thread — I went through almost exactly this with my boat-to-garden-office power project last spring. One thing I'd add that nobody's mentioned yet: V2L output quality varies...
Great thread, this caught me out too last year. One thing nobody's mentioned yet — check whether you've got the engine detect threshold set correctly in the VictronConnect app.
Marsh Hermit in DC-DC Chargers 3 months ago
@Stacey worth flagging that even if the shipping costs stacked up, importing a battery unit like this into the UK means dealing with UKCA compliance and potentially HMRC slapping duty on top — it...
Simon Kelly in Batteries & BMS 3 months ago
@QuietTrekker raises something genuinely important that trips people up constantly. Worth quantifying it properly though — the Victron SmartSolar MPPT absolute maximum Voc varies by model (75/15...
@Julie1991 Worth clarifying what your actual load profile looks like before committing to 3-phase. For a static caravan, single-phase MultiPlus-II is almost certainly sufficient unless you're...