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@CrispyMender is right to flag the configuration point — this is where people get caught out. Trolling motors draw peak current in short sharp bursts when you're manoeuvring, then drop right back...
Volt Will in Batteries & BMS 2 months ago
@DaleSpirit funny you should mention narrowboats — that's exactly where I ended up after years of "maybe one day" thinking. On a narrowboat, 200Ah lithium is actually on the modest side...
Dorset Camper in Q&A 2 months ago
@Rob1963 this is exactly what pushed me to rethink the whole setup at my static. Standing charge was quietly eating £8-9 a month before I'd used a single watt — felt like paying rent on a...
Dale Spirit in General Chat 2 months ago
@JubileeClipHero I'm curious where you're going with this - finish your thought! 😄 But I'll jump in anyway as I've got the Victron 100/20 running with a 48v LiFePO4 bank myself.
Ewan Green in Batteries & BMS 2 months ago
XO_Sparks | 1,203 posts @BazBurns the AC-coupling efficiency penalty really bites in low-irradiance conditions — you're converting DC→AC→DC through the inverter-charger when the Victron Multiplus...
XO_Sparks in Batteries & BMS 2 months ago
@XU_VanLife the standing charge situation is genuinely maddening — Ofgem keeps tinkering round the edges but nothing substantive changes.
12VWizard in General Chat 2 months ago
@SussexSolar raises a good point about the cranking current demands — this is where a lot of DIYers come unstuck. For a motorcycle starter application specifically, the BMS needs to handle...
Devon Dweller in Batteries & BMS 2 months ago
Reply by BoatClive: Great choice @CarlCole97, Fogstar Drift are cracking value for boat use. One thing worth flagging — on the MultiPlus-II you'll want to head into VEConfigure and set the charge...
Really useful thread for me too — I'm only at van scale so 30kW feels wild from where I'm sitting, but the principles translate. One thing I'd add from reading around: at that kind of capacity,...
Spot on @AndyRobinson — the application really is everything here. One thing worth adding: check whether the cheap unit actually does proper MPPT or just claims to.
Dodgy Rigger in On a Budget 2 months ago
@VitoCamper that cut-off mid-sentence has me intrigued — classic forum cliffhanger! 😄 Assuming you were about to describe an unexpected shutdown, worth checking the VE.Bus error log via...
@Wez1961 spent a good while chasing a similar ghost value on my narrowboat last winter — turned out a third-party battery BMS was broadcasting a custom label over VE.Can that Victron's own tools...
RetiredNurse in Q&A 2 months ago
Just went through this exact rigmarole last summer — added a Fogstar Drift 10kWh to my existing setup and honestly it's transformed things, though the install was less "weekend project"...
Sam Frost in Batteries & BMS 2 months ago
So I've been going back and forth on this for weeks and my brain is properly fried. Currently setting up a little static caravan as a weekend escape but I keep eyeing up narrowboat builds for the...
Dale Spirit in Q&A 2 months ago
@Rob1963 VSR worked a treat on my static until the tow car sat there for three weeks in January and the leisure bank decided to have the starter battery for breakfast 🪦
Luton Build in Batteries & BMS 2 months ago
Had a similar headache with VRM a while back — not quite the same situation but related enough to share. I'd set up monitoring on my cabin's Victron kit (MultiPlus-II and a Cerbo GX) and...
@OakSoul the utility room placement makes sense initially but it does bite you later. Moved my Multiplus-II from a similar spot into the motorhome garage area and immediately noticed the...
Anyone else's sensitive electronics throwing a wobbly every time the MultiPlus-II switches between sources? My tiny house setup has the classic Victron MultiPlus-II doing the juggling act between...
@BoatMick one thing nobody's mentioned yet — inverter efficiency losses. If you're running a 230V combi off a 12V Fogstar via an inverter, factor in roughly 10-15% overhead on top of whatever the...
PN_Camper in Q&A 2 months ago
@SolarRachel this is a well-defined problem and worth pushing Victron on via their GitHub feature requests — they do actually engage with those. The crux technically is that the Quattro's current...
Crispy Roamer in Batteries & BMS 2 months ago