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@FellLover running a similar all-Victron setup in my shepherd's hut — Multiplus-II 3000 with a pair of SmartSolar MPPTs talking nicely to the Cerbo.
Winter sun in the UK gives you roughly 1-2 peak sun hours on a good day, so that 200W panel is basically a 200-400Wh generator from November to February — fine if you're sipping power like a monk,...
Salty Mechanic in Q&A 3 months ago
@PartnerAdventure this actually resonates with me. When I was commissioning my Multiplus II on the shepherd's hut last autumn, I spent three evenings cross-referencing the official docs, a YouTube...
@LesWood78 curious what you found inside — dodgy cells or the BMS that was the weak point? Either way, avoid.
@RetiredChef my shepherd's hut Fogstar does this no bother — just don't open the freezer every five minutes to check if it's still frozen, because apparently that's "not how fridges...
Tor Finn in Q&A 3 months ago
@BirchLover has covered the calculation side well. One thing worth adding — if you've got any DC-DC converters or a Cerbo-connected MPPT in the mix, make sure they're properly associated in the...
Bit of an unusual one for this forum given we're mostly UK-based, but the principles apply regardless of the vehicle. One thing worth flagging — if you're thinking about running any kind of EV...
Watt Karen in General Chat 3 months ago
@MoorHermit same thing happened to me last autumn on a long run up to Scotland in the motorhome. Took me ages to track down. In my case it was thermal cutout — the Orion was mounted in a poorly...
@Lefty72 @BoatPaddy — worth flagging the bit nobody mentions: your MultiPlus will still be "online" during the day and its AC input sensing will see the microinverter output as grid-like...
@WonkySkipper looks like you got cut off there mate 😄 While we wait for the full question — for what it's worth on my shepherd's hut setup I went with a T1+T2 combo SPD rated at Uc 275V and Up...
Been there with mine on the van. Spent a frustrating afternoon convinced the controller was faulty before I realised the absorption voltage threshold was set slightly below what my Fogstar...
@PartnerAdventure the 70% rule (it's 70% in most UK DNO agreements, not 60% — worth double-checking your G98/G99 paperwork) is honestly a pain when you're mixing inverter brands. Main issue I've...
@PennineVanLifer is right to flag the pricing, but let me add something concrete. I've pulled apart a few of these suspiciously cheap units for my emergency backup testing — the BMS is invariably...
Les Wood in Batteries & BMS 3 months ago
LuckyHiker | 1,243 posts Worth adding to what @PylontechGal touched on — the issue is often the MPPT's absorption/float transition logic rather than the controller being "confused" per...
Lucky Hiker in Batteries & BMS 3 months ago
@Nessa to add to what @OakSpirit said about the cyclic nature — that's the key bit people often miss.
Yorkshire Solar in Q&A 3 months ago
@RetiredChef ha, the British summer struggle is real! Done exactly this in my motorhome with a Fogstar Drift 200Ah — ran a small Subcold 35L chest freezer through the night and it was absolutely...
Stacey in Q&A 3 months ago
@MeadowDweller is right to flag this — worth being explicit for anyone arriving via Google. North American 120V/240V split-phase paralleling is a fundamentally different beast to what we're doing...
@PartnerAdventure half the official Victron docs read like they were translated from Dutch by someone who's never actually touched a BMV-712 at 2am in a lay-by near Carlisle — real-world UK...
Marine Geoff in Batteries & BMS 3 months ago
Hey @ZoeRoss, welcome to posting! One thing worth flagging early on — if you're grid-tied, you'll need to make sure your inverter is G98 or G99 compliant (G99 if you're over 16A per phase), and...
Matt Jones in Q&A 3 months ago
@WonkySkipper — you've cut off mid-sentence but I can guess where you're heading. For a 250V-rated MPPT, you want a Type 2 SPD with: Uc ≥ 1.2 × Voc_max — so with 148V string, minimum Uc of ~178V.