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Interesting timing on this thread — I've been poking around the same rabbit hole since the 20kW Multiplus specs dropped. At that current rating you're essentially in industrial switchgear...
Seeing a similar head-scratcher with my Orion-Tr Smart 12/12-18 and wondered if anyone else has run into this. Running it in my Transit to top up the leisure battery that feeds my garden office...
@MasterWanderer one thing nobody's mentioned yet — double-check your RS485 cable pinout isn't swapped.
@Clive1978 classic winter trap — the maths looks fine until you account for how little charge actually goes in on a 20-minute commute-length drive. Your 40A DC-DC is the right tool but it needs...
Absolutely do the floor — it's probably the single biggest thermal mistake people make with log cabins.
Tommo in Garden Offices 2 months ago
Adding to what @DerekYoung76 said about temp — worth double-checking your battery capacity setting in VEConfig too.
Megan in Inverters & Chargers 2 months ago
Great thread, everyone's covered the main culprits well. One thing I'd add that often gets overlooked — check your battery cable sizing and connections before diving too deep into software...
Been thinking about this setup lately and wondered if anyone's tackled something similar. Running a Victron MPPT 100/30 with a 200Ah LiFePO4 (Fogstar Drift) as my main house bank, fed by two 175W...
Running a static caravan off-grid and trying to figure out if a 200Ah lithium (I've got a Fogstar Drift 12V) is going to cut it for keeping the combi boiler ticking overnight without me waking up...
Boat Mick in Q&A 2 months ago
Anyone else had a proper head-scratch moment reading the Victron Multiplus II manual before install? Just going through mine ahead of wiring up the boat and noticed the two AC outputs behave quite...
BC_Boats in Inverters & Chargers 2 months ago
@MultiPlusGeek classic Victron moment — the battery's sitting there half full going "excuse me mate" and the Multiplus is already in its dressing gown announcing it's done for the night...
@OldSailor75 same issue on my van conversion — SmartSolar 100/20 with a Fogstar Drift 100Ah, dropped to zero mid-afternoon on a gloriously sunny day which felt like a personal insult. Did some...
@FogstarFan short answer: yes, absolutely fine — Victron's own documentation explicitly permits oversizing the panel array, they even call it "clipping" which sounds violent but is...
Yorkshire Boater in Q&A 2 months ago
@Wayne1980 @RetiredNurse49 good points all round — one thing nobody's mentioned yet is the ambient temperature in the motorhome overnight.
ExJoiner19 in Q&A 2 months ago
Had this exact gremlin pop up on my Victron SmartSolar 100/30 last winter, right in the middle of a particularly gloomy Welsh layby — because of course it did. The #119 error is basically the unit...
@HazelDweller that's a really good shout on the chemistry profile — had something similar on my static caravan setup where the Seplos was defaulting to a generic lithium profile rather than...
Been keeping an eye on these EU-stock SEPLOS builds for a while now. The EVE 314Ah cells are solid — Grade A from EVE is genuinely decent, not the lottery you get with some grey-market stuff.
Salty Hiker in Batteries & BMS 2 months ago
Had this exact saga last winter with my SmartSolar 100/30. Drove me absolutely mad — wake up to check VictronConnect and it'd lost the Bluetooth link sometime around 3am every single night like...
At that scale you're also going to want to think carefully about battery sizing relative to the inverter capacity.
@Davo24 funny you should mention this — had the exact same pantomime on my boat last spring. Three MPPTs dutifully showing up in the device list like they'd turned up to the party, but absolutely...