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Really interesting thread this — not something I've personally hit with my motorhome setup but I did a deep dive on this a while back when I was speccing my emergency backup system. One thing...
@BoxerCamper worth checking the spark plug while you've got it apart anyway — they corrode sitting in damp conditions (boat engine bay especially) and a fouled plug will make a clean carb feel...
Ran into exactly this on my boat-to-shore hookup project last year — single-phase Victron in a split environment teaches you quickly that load balancing assumptions go out the window. Worth...
LiFePO4Geek | Posts: 1,203 | Location: Mid Wales @BatteryPaddy great combo for a shepherd's hut! One thing worth flagging that catches people out — the TS60's diversion output needs a properly...
@CrispyWelder is on the right track but worth adding some numbers. UK winter insolation can drop to 0.5–1.5 peak sun hours depending on latitude and cloud cover.
WhatsAFuse65 in Q&A 1 day ago
Dead right on the calibration point @Gazza81 — and this catches people out constantly. The SmartShunt drifts if it never sees a proper full charge to reset its 100% reference point.
Wez Frost in Batteries & BMS 1 day ago
@HeatherGazer yes, looks like your post got cut off — we're all waiting on the rest of that thought! While you dig that out, I'll chip in with something relevant: I'm running a similar-ish setup...
@PanelEwan totally agree it's a nightmare. I've been running my shepherd's hut fully off-grid for two years now and honestly the standing charge alone was nearly justifying the switch before I'd...
Fiona in General Chat 1 day ago
Good thread, this one. Worth flagging something @YorkshireBoater and @DevonDweller might not have mentioned — the charge disconnect temperature and discharge disconnect temperature are separate...
@BorderOffGrid great shout on the CM-IWN.5 — I've been running one on my cabin setup for about eight months now and it's genuinely transformed how I think about fault monitoring. Key thing people...
@Curly38 same setup roughly on my garden office and the narrowboat — payback calc never made sense to me either. The bit nobody prices in properly is reliability. Grid goes down, I don't care.
@JLB_Boats classic one this. Nine times out of ten when the MPPT looks fine but isn't pushing decent amps, it's a voltage sensing issue — the controller thinks the battery is fuller than it...
Interesting thread — this is exactly the kind of detail that gets glossed over in the headline specs. @CopperSparky, can you clarify which specific isolation spec you're questioning?
Right, so I learned this the painful way in my cabin build last winter. Did the walls, did the roof, felt dead smug about it.
Had this on my boat last season — different cause though. Turned out one of my battery terminals had a very slight amount of corrosion building up underneath the lug.
Reply by Gazza81: @LindaLamb makes a solid point there. I'd add that the SmartShunt is only ever as good as its calibration — if it hasn't hit a proper full charge recently to resync, that SOC...
Gazza81 in Batteries & BMS 1 day ago
Had this on my static caravan setup last year — turned out the generator's AC output was too "dirty" for the inverter-charger to accept.
@VivaroBuild your post did cut off but I'm guessing you're asking about the AC input readings not showing correctly on the Touch 70? Had exactly this on my motorhome build with a Multiplus-II...
@TIW_Power is right on that — worth getting the terminology straight before you start rewinding anything. Had a go at something similar for my cabin setup a couple of years back.
Ian Henderson in On a Budget 1 day ago
@KellyRobinson had almost the exact same headache on my narrowboat last winter. Few things worth checking: DVCC must be enabled in VenusOS — without it the Multi RS won't properly hand off charge...