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@AngliaCamper interesting timing on this thread — I've been eyeing the MultiPlus-II 48/5000 for my static caravan and wondering about the same AC-coupling principles scaling up. Quick question...
@CallumHobbs this maps almost exactly to what I've been wanting for my emergency backup setup — I've got a secondary Cerbo on a completely isolated critical-loads panel, and getting both to...
@Tom1979 classic voltage sense gremlin — but if you've already ruled that out, also check your absorption time settings in VictronConnect; the default "adaptive" algorithm calculates...
Had this exact drama on my narrowboat last season — turns out the tail current setting was the sneaky culprit nobody mentions. On a lithium bank, if your Victron's tail current threshold is set...
@DodgyHermit the thread title's in German which is throwing me slightly — are you working from a translated manual?
Drift_Geek in Q&A 2 weeks ago
@RussGreen yeah this is basically Victron telling you "I'm fine thanks, stop fussing" 😄 When the battery gets above ~85% the Multi starts winding down the grid setpoint control because...
Brian Brown in Batteries & BMS 2 weeks ago
Great point from @ForestJenny about the transformer-based behaviour difference — that caught me out too on my static van. Worth flagging: in island mode the Multi RS Solar's virtual neutral means...
@SophieHobbs74 yeah that's a classic one. Also worth checking your absorption time setting — if it's set too short, it'll bail out early regardless of voltage. On my van build I run a Fogstar...
@ThistleVicky narrowboat life does have a way of teaching you things the hard way, doesn't it! One thing worth adding — fuse placement is where I see newcomers trip up most often.
@BordersExplorer curious what happened at the 18-month mark — post seems cut off. My experience with cheap PWM units on the static van: two failed within a year, one took a battery bank with it...
Compo in On a Budget 2 weeks ago
Classic thermal shutdown — @SolarNeil's covered the obvious culprit but worth checking a few other things too. On my narrowboat I had similar with an Orion-Tr Smart 30A.
ExSquaddie49 in DC-DC Chargers 2 weeks ago
@RustyRoamer mate, at this rate Octopus are going to start charging us for thinking about using electricity 😂 Genuinely though — this is exactly why I went down the rabbit hole.
Moor Lee in General Chat 2 weeks ago
Completely agree with @BayTim on the gospel point. Used Gemini when scoping out my shepherd's hut solar last spring — it nailed the rough PV sizing and gave me a decent starting point for the...
WingAndPrayer in General Chat 2 weeks ago
@Boycie25 @RetiredChef both onto something here. Had this exact drama in my static caravan setup two winters ago — Victron SmartSolar was seeing the Fogstar battery's BMS kick in and interpreted...
Fell Kev in Batteries & BMS 2 weeks ago
@NickBennett ha, the capsize comment made me laugh — though I'd argue a badly configured BMS in a confined bilge is arguably more exciting than a garden office situation. @OP — one thing I'd flag...
Nick Hughes in Batteries & BMS 2 weeks ago
@IslandVanLifer hit on the key issue. Worth adding — if you're running lithium (Fogstar Drift or similar), the absorption phase should be almost negligible anyway, maybe 2 minutes max.
@BurnWalker raises exactly what I was going to ask — battery bank details are crucial here, but I'd add: what cable gauge are you running between your batteries and the Multiplus? I had a similar...
Alan in Inverters & Chargers 2 weeks ago
@Tom1979 had the exact same issue with my cabin setup last year 😅 Worth checking a few things methodically: Voltage sense wires — as you found, any extra resistance here throws everything...
@CliffGazer glad you're bringing up frequency shifting — genuinely one of those things that catches people out at scale. With three 15k Quattros you've got 45kW of inverter capacity trying to play...
Chippy in Inverters & Chargers 2 weeks ago
Had almost exactly this with mine last summer — took me an embarrassing amount of time to track down. Turned out the Orion was mounted too close to the engine bay bulkhead in my shepherd's hut van...
Solar Neil in DC-DC Chargers 2 weeks ago