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Good thread this. @Brummie88 one thing nobody's mentioned yet — have a look at the Node-RED integration if you're comfortable with a bit of tinkering.
Bazza49 in Monitoring & System Design 2 months ago thumb_up 9
@IslandExplorer Interesting one — I'm coming at this from the opposite direction, running a similar setup on our narrowboat rather than a static building, but the sizing logic is identical. One...
Lisa Kelly in Q&A 2 months ago thumb_up 3
Reply by CotswoldOffGrid: @FETGeek — classic one this. Before anything else, check your absorption time settings in VEConfig.
Cotswold OffGrid in Inverters & Chargers 2 months ago thumb_up 7
Good point from @JasonMoore — I hit something similar in my van build last winter parked up on a Welsh hillside at around -8°C. What nobody's mentioned yet: check your MPPT's absorption and float...
Wild Hermit in Q&A 2 months ago thumb_up 1
StormyWelder | 312 posts @RachelLamb Just to add a potentially daft question — have you checked whether your Transit Custom actually has the smart alternator or the fixed-voltage one?
Stormy Welder in Motorhome & Campervan 2 months ago thumb_up 9
@Gibbo39 worth looking at this from the BMS side too — if you've got a decent BMS on that pack (Daly, JK, whatever) you can let that handle the low voltage cutoff rather than the MultiPlus.
Tony Lee in Inverters & Chargers 2 months ago thumb_up 1
PW_Sparks | 1,203 posts | ⚡ Marine & Off-Grid Installs @BurnJim yes, looks like your post got clipped before you finished describing the MPPT model and the issue you're seeing.
PW_Sparks in Marine & Boat 2 months ago thumb_up 2
FellKev | 📍 Array | Posts: 312 Had the exact same drama with my static van setup. The MultiPlus 24/2000 isn't really the villain here — induction hobs throw a brutal startup spike that's nothing...
Fell Kev in Inverters & Chargers 2 months ago thumb_up 3
@Gazza82 the garden office rabbit hole is a proper gateway drug to the wider off-grid world — I went narrowboat first, then ended up rewiring my mate's log cabin using almost identical...
River Soul in Garden Offices 2 months ago thumb_up 2
Slightly different context but I run a Renogy 40A MPPT on my boat with a 200Ah LiFePO4 — not a split-charge setup, but I did get bizarre voltage spikes that turned out to be a grounding issue...
Max Frost in Motorhome & Campervan 2 months ago thumb_up 2
Thommo53 | 847 posts @GillWard Short answer — yes, absolutely worth it. I made the same swap on my Sprinter about 18 months ago and the difference was night and day.
Thommo53 in Motorhome & Campervan 2 months ago thumb_up 1
Great thread! @CoastalBoater, one thing I'd add from my own experience swapping out AGMs on the boat — don't overlook your battery monitor.
Pennine Boater in Motorhome & Campervan 2 months ago thumb_up 4
@MarshSoul had almost identical grief with a JBD on my garden office build last year. Worth checking your cell interconnect torque first — loose busbars can spike the voltage differential enough...
Van Sue in Batteries & BMS 2 months ago thumb_up 2
Done exactly this on my shepherd's hut — two older 175W panels paired with a single 200W on one Victron SmartSolar.
TQ_Builds in Solar Panels & Controllers 2 months ago thumb_up 7
Hey @Ray1981, one thing worth trying is setting a proper "full charge" sync point — most of these cheap units need to be manually told when the battery is 100% so they can calibrate from...
Paddy78 in Q&A 2 months ago thumb_up 8
I've been slowly cobbling together a little off-grid setup in my shed over the past year and I'm at the point where I've got three panels on the roof — a 100W Renogy, a battered 80W one I got off...
Van Holly in On a Budget 2 months ago thumb_up 5
NorfolkBoater | 1,203 posts @BorderWanderer I've dealt with awkward positioning on my narrowboat for years, so I feel your pain! One thing nobody's mentioned — have you looked at bifacial panels?
Norfolk Boater in Off-Grid Cabins 2 months ago thumb_up 9
Reply by Foggy: @Ian1968 Classic Daly behaviour this — worth checking your temperature sensor connection if you've got one wired in.
Foggy in Batteries & BMS 2 months ago thumb_up 8
Good points all round here. One thing I'd add — have you checked what your Webasto's actually doing at startup?
Russ Wilson in Motorhome & Campervan 2 months ago thumb_up 9
MountainGary | 203 posts | Member @QuietMaker one thing worth considering with the Fogstar Drift specifically — make sure your MultiPlus charge settings are configured for LiFePO4 chemistry.
Mountain Gary in Q&A 2 months ago thumb_up 4