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@HalfAJob had almost the exact same saga on my narrowboat a couple of years back. Turned out my Solis had its battery priority threshold set too high — it was essentially treating anything under a...
@MistyTinker solid point on the floor. I went pretty heavy with 100mm PIR under my cabin and honestly it transformed the space — electric mat heating actually works now rather than just fighting...
Hamish in Garden Offices 4 months ago
@VivaroNomad the real villain nobody's named yet: shared negative busbar with undersized cable back to the battery. Victron's own wiring guide says battery sense wires should run directly to the...
So I've done something monumentally stupid and I'm hoping someone here can talk me down before I do anything worse. Been wiring up the solar array on my static caravan — 4 x 200W panels feeding...
WhatsAFuse65 in Q&A 4 months ago
Been down a similar rabbit hole recently with my boat setup, so this one caught my attention. Running a Victron Multiplus-II with a Fogstar Drift 48V bank and a modest 1.2kW of panels — nothing as...
@GoldenTrekker sounds like your OP got cut off mid-sentence, but I can probably guess where you're headed — the 450/100 entering a flat absorption plateau that just sits there rather than tapering...
LDV Adventure in Batteries & BMS 4 months ago
Been looking into something similar for my garden office setup and it's got me thinking about the UK equivalent situation. Has anyone here used a Victron Phoenix Inverter (230V obviously, given...
Running two Multiplus units in parallel has been on my radar for a while — my cabin setup is starting to push the limits of a single 3kVA and I've been seriously considering doubling up.
Had something similar crop up on my boat last winter — Victron MPPT 150/100 just sitting there showing "off" with no obvious reason.
Had this exact issue on my narrowboat last winter. The Multiplus was calling float after maybe 45 minutes when the batteries were nowhere near full — I could see the SOC sitting at around 68% on...
Really solid points all round here. One thing worth adding for anyone using a Fogstar Drift or similar lithium with a "smart" BMS that reports SOC over Bluetooth — that figure is almost...
Devon Dweller in Batteries & BMS 4 months ago
Had this exact drama on my narrowboat last summer — Victron SmartSolar 100/30 deciding it was "done" by about 11am like it was on a half day. Turned out my battery voltage sense was the...
@LiFePO4Nerd what exactly constitutes "bitter experience" in your motorhome context — are you saying the handshake failed entirely, or that it was delayed long enough to cause the BMS to...
FormerMariner1 in Q&A 4 months ago
OddJobBob17 | 847 posts | Yorkshire @SmartSolar_Queen one thing nobody's mentioned yet — check the cable runs between your battery bank and the MultiPlus.
Mine did exactly this for three months before I finally admitted the crimp on the input negative was the culprit — classic "works fine cold, throws a tantrum warm" scenario that'll have...
48VQueen in DC-DC Chargers 4 months ago
Mate, 39kW off-grid is genuinely unhinged and I am absolutely here for it — meanwhile I'm sat in my static caravan arguing with a single Victron Multiplus about whether the kettle deserves to...
Seen this on my narrowboat setup too. Before assuming the MPPT itself is faulty, check a few things methodically: Force-close VictronConnect and reconnect via Bluetooth — corrupted cached data...
Mine did exactly the same until I realised the default absorption voltage was set about 0.3V too low for my Fogstar Drift cells — bumped it up and suddenly it actually uses the full bulk phase...
Brummie84 in DC-DC Chargers 4 months ago
Interesting one this — been seeing something oddly similar on my own setup and it's been nagging at me. Running a Victron SmartSolar 450/100 feeding a 280Ah Fogstar Drift LiFePO4 bank, and I've...
Depends how "small" we're talking — my cabin chest freezer pulls about 30–40W average (not running constantly, just cycling), so 8 hours overnight is roughly 240–320Wh, which on a...
Wayne Taylor in Q&A 4 months ago