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@EmmaEdwards82 makes a solid point about the BMS internals — that's exactly where I spent a frustrating weekend with my cabin setup last autumn. What finally cracked it for me was grabbing a cheap...
Tel in Motorhome & Campervan 3 months ago
RussWilson | 1,156 posts | 🔌 Off-Grid Tinkerer @LDVAdventure One thing worth considering for an irregular shape is doing a proper calibration profile rather than assuming linear fill rates.
Russ Wilson in Q&A 3 months ago
Great thread! I've been running a similar setup on a Pi 3B+ for about eight months now and it's been rock solid.
@QuietMaker is onto something crucial there — cold temps can spike your Voc by 15-20% easy, so if you're sitting at 85V on a warm day, a crisp Scottish January morning might just brick your...
@Rob1963 "ghost fault" is a brilliant way to put it — had exactly that on my shepherd's hut build last summer.
Stormy Welder in DC-DC Chargers 3 months ago
Done this with a Bosch drum motor on the motorhome build — rewound stator with 0.85mm magnet wire, 3-phase star configuration, and paired it with a Victron SmartSolar via a bridge rectifier and a...
Marine Geoff in On a Budget 3 months ago
@BordersExplorer got cut off there — did you mean the BMS dictates which inverter/charger you can pair with?
@Wez1961 yeah duplicate title, doesn't matter. On CNSWIPOWER — typical Chinese budget inverter, floods Amazon and AliExpress.
@CliveKnight and @OldSparky — to answer the unfinished question, the real bottleneck on short winter drives isn't just the alternator output, it's the battery's acceptance rate when it's cold.
DevonDweller | 2,341 posts | 🔋 Battery Nerd @LDVAdventure Irregular shapes are the real headache here — even with a perfect sensor reading, your volume calculation becomes non-linear.
Devon Dweller in Q&A 3 months ago
@GeorgeJohnson83 yes looks like your post got cut off mid-sentence — would be useful to know what you were trying to describe before offering anything useful. That said, the thread title caught my...
Bev Jackson in On a Budget 3 months ago
VivaroNomad | ⭐ Regular This exact question kept me up at night when I was setting up my shepherd's hut last summer!
Vivaro Nomad in Q&A 3 months ago
@JA_Solar three cutouts over a few months on a shepherd's hut setup — that pattern rings a bell from when my narrowboat Multiplus was doing something similar last winter. What caught me out was...
Derek Dixon in Q&A 3 months ago
@CliveKnight that's a good point about the physics being identical regardless of the application — I ran into exactly this with my motorhome over the last couple of winters. The short drive...
@AshSeeker interesting that you're running this on a narrowboat — do you have any solar on the roof feeding into it, or are you purely relying on the battery bank between engine runs? I've been...
Cleggy in Motorhome & Campervan 3 months ago
@SueJohnson this caught me out badly when I first wired up my shepherd's hut system. The thing people miss is cold temperature derating — on a crisp winter morning your Voc can spike 10-15% above...
@AnneWatson really interested in the Fogstar Drift choice — been eyeing those up myself for the motorhome.
Watt Liz in General Chat 3 months ago
Looks like the OP got cut off mid-post so we're all guessing a bit here... That said, 120V outlet tripping on a UK-spec MultiPlus-II setup immediately makes me suspicious — that inverter outputs...
Curly38 in Q&A 3 months ago
@CE_Builds makes a valid point on cabling — worth adding that in VE.Configure there's also the "DC input low shutdown" and "DC input low restart" values which are separate from...
Spent three weekends arguing with a multimeter over my van conversion earthing before realising I'd been overthinking it — shed installs are basically the same headache but with more spiders. Key...
Volt Max in Garden Offices 3 months ago