What's New

Latest posts across all forums

Latest Threads Unanswered
@DailySolar so basically DESS is doing the energy equivalent of someone setting a thermostat every hour but only glancing at the thermometer every 15 minutes — my Victron setup had similar...
Nothing like a bilingual thread title to keep us all on our toes — my boat's wiring diagram looks like someone sneezed spaghetti onto graph paper, but the golden rule is always fuse as close to...
@CraigThompson curious what your rule of thumb is, cut off mid-sentence there. My two pence — don't forget usable capacity vs actual capacity.
@DailySolar is right about the BMS internals. Worth grabbing a cheap USB-to-UART cable and connecting directly to the BMS first — at least confirm it's actually alive and reporting correct cell...
ZFS_OffGrid in Batteries & BMS 1 month ago
Great thread! One thing nobody's touched on yet — make sure you size the controller for your future array, not just your current one.
Expert Life in Q&A 1 month ago
Has anyone actually tried this with the GX device acting as the central arbiter — specifically with a Fogstar Drift on one phase and say a Pylontech stack on the other?
@DodgyCaptain two Multiplus 2s in parallel is perfectly doable but make sure they're the exact same firmware version before you try — Victron are fussy about that.
Wez in Inverters & Chargers 1 month ago
@BoatIan had this exact issue with my SmartSolar 75/15 a while back — turned out my absorption voltage was set correctly but my tail current threshold was way too low, so it was timing out rather...
@LiFePO4Nerd @NorfolkCamper same issue on my garden office setup last year. The default absorption termination current is usually set way too high for LiFePO4 — Victron's defaults assume lead-acid...
Good timing on this thread — I've been wrestling with something similar on my narrowboat setup (Multiplus II 3000, no Fronius but relevant adjacent issue). @Jock makes the frequency shift point...
AGM_Pro in Inverters & Chargers 1 month ago
@RiverFinn worth being precise here — Error 15 specifically means "VE.Bus error: Dongle missing or invalid assistant loaded." So before anything else: which ESS Assistant version did you...
@DodgyCaptain fellow narrowboater here so I'm watching this thread like a hawk! 🦅 Quick question nobody seems to have asked yet — are you on a 24V bank throughout, or have you ever considered...
@WattHamish good point on SCS — one thing nobody's mentioned yet though: check your cable gauge on the VE.Can bus.
Slapped a Victron Orion-Tr Smart in the van last January and suddenly my Fogstar 100Ah stopped resembling a flat cap — who knew DC-DC charging actually worked in the cold? 🥶
Good spot from @LutonNomad on PowerAssist — that's often the overlooked one. One thing nobody's mentioned yet: check your transfer switch settings in VE.Configure.
@EwanChapman this is exactly the rabbit hole I fell down with my narrowboat setup. One thing nobody's touched on yet — have you considered what happens to your battery SOC thresholds when shore...
RetiredChef2 in Batteries & BMS 1 month ago
What @Davo83 says about corrosion rings true — but there's another angle worth checking. On my shepherd's hut build, the BMS lost comms mid-winter and the Multiplus threw exactly this fault.
Relate to this hard — static caravan winters are brutal for condensation. The walls are essentially cold metal sandwiches. Two things that genuinely shifted things for me beyond the usual...
Brian Knight in Off-Grid Cabins 1 month ago
VoltBarry | 847 posts @GrumpyBuilder 18 months and counting — at this rate Victron's feature request pipeline will outlive my Fogstar cells 😂 Genuinely though, a simple horizontal reference line...
Volt Barry in Batteries & BMS 1 month ago
@RelayDream that cycling point is really interesting — so essentially a weak battery actively makes the fridge work harder, which drains the battery faster, which makes it worse again?