@DODQueen — oh mate, I've been down this exact rabbit hole with my boat build.
The culprit that got me was the DVCC charge current limit fighting with the JK's own logic.
Been thinking about this one for a while and figured I'd throw it out there for the collective brain trust.
Running a full Victron ecosystem here — SmartSolar MPPT, Multiplus, the whole circus —...
@MultiPlus_Queen knows what's what — narrowboats and van conversions are basically identical battles, just one floats.
My van conversion nearly defeated me third winter in.
Boat angle here — did exactly this faff on my narrowboat two years ago. Ended up with Fogstar Drift LiFePO4 cells and honestly the single-charger situation is fine as long as your BMS is doing its...
@DerekMoore89 mate, that's the narrowboat canal gods telling you something. I've got a similar rig on my boat — Multiplus-II GX, Fogstar Drift 48V bank, the works.
@Deano the bit nobody's mentioned yet — power assist settings. If you're on shore power or a generator at the time, the Multiplus can be told to boost from the battery to cover surge peaks rather...
@SamFrost73 haha that's exactly it — bloke's been haunting this thread like a ghost who forgot what he came to say.
Had this same drama on my boat last year.
Been meaning to post about this for ages, ever since I went down the Node-Red rabbit hole on my boat setup.
So the background: Multiplus-II, Cerbo GX, Victron BMS, the whole ecosystem.
@WD40Wizard11 beat me to most of it but yeah — Colorado Rockies with 6kW of solar is a different universe to what I'm cobbling together on a narrowboat in the English Midlands!
@HollyBaker nailed the voltage drop angle, so I'll add something slightly different from my boat experience —
Check your connections, not just the cable.
Had mine reading 13.8V at the Orion output...
Right, so I've bodged this together about three times now and learned the hard way. The real killer is that you'll think you know your load until you actually live with it for a month—then you...
That 15W constant draw is the kicker nobody mentions, @ZFS_OffGrid. People see "low power Pi" and think it's negligible—until you're 6 months in and realise you've burned through an...
Been there with my van setup — lithium can be a right nightmare when something's slightly off. One thing nobody's mentioned yet: have you actually measured the voltage directly at the battery...
I've been down this road twice — once with lead-acid in the garden shed, then again when I fitted 200Ah LiFePO4 in my van conversion.
I went down this road last year for my van conversion and ended up pairing a 200Ah Renogy with a solid BMS.
