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@NicolaTaylor72 had exactly this with my setup in the motorhome — turns out the Orion XS was reading a slightly elevated voltage at the input side because my chassis wiring had marginal...
LiFePO4Nerd in DC-DC Chargers 3 weeks ago
@CliveBaker I ran a cabin in the Cairngorms for two winters on a setup that made exactly this mistake — single input source, optimistic about Scottish skies.
@DevonDweller raises a fair point about the dollar sign, but I'm more concerned about the practicalities even if the deal were legit. 16.66kWp sounds glorious until you realise you need somewhere...
Great thread this — narrowboats have the added complication of shore power quality varying massively between marinas, which can throw another spanner in the works on top of the profile issue. One...
Paddy Fox in Marine & Boat 3 weeks ago
What @PanelEwan said about specifics is spot on — I'd add one thing from bitter experience fitting out my shepherd's hut build. The fireman's switch (or emergency switching device as BS 7671...
ExFirefighter11 in Q&A 3 weeks ago
Slightly different angle on this — in a static caravan context I had a similar head-scratcher when trying to get the Multiplus-II to "see" the full 240v picture for things like my EV...
@BoatMark mine did this exact thing with my cabin setup — Victron had a complete meltdown after a cold snap, convinced itself the world was ending 😂 Worth trying the manual equalisation/forced...
@AnneWatson this is a classic issue with EV chargers — they often have a fairly high minimum startup draw that your panels simply can't meet at low irradiance. A couple of things worth...
BlownFuse in Q&A 3 weeks ago
@SophieHobbs74 had exactly this on my boat last summer. Even with a decent Victron MultiPlus the LEDs would dip when the compressor fired up. What sorted it for me was a soft starter on the AC...
@PennineCamper yeah, finish the thought! Though I reckon I can guess where you're headed — you want to know if running an EV charger on AC-Out-1 will cause the MultiPlus to have a meltdown when...
@BordersNomad my JP-Plink took about 20 minutes of me staring blankly at it before I realised the little jumper on the board needed moving — check that before you go down the firmware rabbit hole...
Dales OffGrid in Q&A 3 weeks ago
@MoorHamish this caught me out badly on my narrowboat last winter too. Worth checking whether your inverter is drawing phantom loads overnight — mine was pulling 15-20W in standby constantly,...
Went through exactly this on my shepherd's hut setup last year. Even when you can set a lithium profile, double-check what voltage the charger actually outputs at — mine claimed "lithium...
Anne Watson in Marine & Boat 3 weeks ago
@TonyLee — 200Ah LiFePO4 is only "overkill" until the first cloudy week in November when you're staring at a laptop with 4% battery and a deadline. Rough rule of thumb: add up your daily...
Marine Geoff in Q&A 3 weeks ago
Good shout from both @ValleyOffGrid and @DevonDweller. One thing worth checking specifically with Lithium Blue units is whether your charge source has a proper absorption/bulk profile matched to...
Vito Camper in Batteries & BMS 3 weeks ago
@Cerbo_Queen the "decent on paper" bit is doing a lot of heavy lifting there. I'd be wanting to see actual cycle test data, not just the headline 314Ah figure.
DODGuy in Batteries & BMS 3 weeks ago
@CliveBaker 100Ah is genuinely undersized for a Scottish November — you're fighting physics itself up there, where a "good" solar day might net you 150Wh if you're lucky and positioned...
@DodgyRoamer is right to flag the terminology — on AC output what people often actually mean is that Line and Neutral are swapped, which is a different beast to DC reverse polarity. Worth checking...
@PanelKate the narrowboat angle makes this more interesting — I ran into exactly this rabbit hole when I was wiring the shepherd's hut off a similar stacked arrangement. The key thing nobody...
@SimonKelly ah yes, the classic Victron tradition of "we fixed ten things and broke the one thing you actually use" 😄 But seriously — for anyone scratching their heads, if you're running...