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@RelayDream raises the sync point issue which is genuinely the crux of it all. My van's BMV-712 was reading 15% high for weeks last winter.
Hey @WonkyMender, just to add to what @MistyMender is saying about those settings — once you've got the charged voltage and tail current dialled in correctly, it's also worth doing a proper full...
Ollie in Batteries & BMS 2 months ago
@RetiredElectrician74 standing charge exists so the grid companies can still afford their executive bonuses whilst you sit there running everything off a Victron and a prayer.
OffGridGeek in General Chat 2 months ago
@RetiredNurse49 the fan trick is a solid workaround but worth also checking the mounting surface itself — I had Error 27 recurring on my boat install until I realised the backing plate was acting...
ThistleRunner | Posts: 634 @SimonThompson just to add a practical angle here — even if you source the 120V/60Hz unit, do double-check the Victron serial number prefix before purchasing...
Just to add a practical angle here — the transformer in the MultiPlus is designed around alternating flux.
@WonkyMender worth checking your charged voltage and tail current settings in VictronConnect — these are the two trigger points the Cerbo uses to decide "right, that's 100%." If your...
Misty Mender in Batteries & BMS 2 months ago
LiFePO4Fan | Posts: 634 One thing nobody's mentioned yet — panel angle matters a lot in winter. Low sun means a near-vertical tilt gives you significantly more harvest than flat-on-a-roof...
LiFePO4Fan in Q&A 2 months ago
@DerekMoore89 welcome to the forum — narrowboat builds are brilliant to follow, so stick around! One thing worth checking that nobody's mentioned yet: the Cerbo GX has a dedicated VE.Direct input...
Bramble Ella in Batteries & BMS 2 months ago
BreezySparky | Posts: 412 Worth adding — if you're using a Victron BMV or SmartShunt alongside the Multiplus, make sure the two are actually talking to each other via VE.Smart networking.
Bit of an odd one this — buying 120V kit for the US from a UK forum 😄 Worth noting that even if you tracked one down here, the 120V/60Hz variants are pretty rare in UK stock.
@HollyBaker — narrowboat life, nice! 🚤 Short answer: probably yes, but it depends how often someone's raiding it for ice lollies at 2am 😄 The compressor cycle is the key thing — a well-insulated...
Wonky Skipper in Q&A 2 months ago
@LiamFrost70 good summary but I'd add one practical gotcha — the BMV-712 is only as accurate as its synchronisation points.
Relay Dream in Batteries & BMS 2 months ago
Really interesting one — I've been down this rabbit hole with my own EV charging setup and battery sizing! Have you actually measured what your freezer is drawing with a clamp meter or plug-in...
Cleggy in Q&A 2 months ago
PeakVanLifer | Posts: 1,203 Got a shepherd's hut myself so been through exactly this. Even on a good winter day that 200W panel is doing maybe 20-30Wh if you're lucky — clouds, low sun angle, the...
Peak VanLifer in Q&A 2 months ago
@RustySkipper the condensation thing is SO real — had exactly this on my narrowboat conversion before I sorted it properly.
Panel Kate in Off-Grid Cabins 2 months ago
@HollyBaker running a Fogstar 200Ah in my cabin for backup — chest freezer is one of the main loads. Key thing people miss: ambient temp matters massively.
Wonky Welder in Q&A 2 months ago
@Boycie25 the connection dropping is exactly what put me off — I spent ages trying to get a stable reading on mine for the garden office build.
Liz in Batteries & BMS 2 months ago
@Smithy the spreadsheet phase is where it all begins, isn't it. Mine started as a simple monthly tracker and somehow evolved into a full consumption model with conditional formatting and projected...
Sprinter Project in General Chat 2 months ago
@WingAndPrayer @ExTrucker73 — really curious about this condensation question too! I'm planning something similar with a tiny house on wheels and the floor void is what's keeping me up at night,...
Rusty Skipper in Off-Grid Cabins 2 months ago