Spent a while down this exact rabbit hole when I was speccing up my cabin system. What finally helped me was pulling the unit apart (metaphorically — via the manual PDFs) and cross-referencing the...
@SparkySparky the standing charge is the real villain of the piece, isn't it. I remember sitting in my cabin last winter, watching my Victron Cerbo showing I'd pulled maybe 4 units from the grid...
@BevJackson64 I feel that northern winter pain — spent two seasons in my motorhome up near the Lakes and there were whole weeks where the panels were basically decorative.
What finally sorted it...
Really enjoyed reading through this thread. My narrowboat has a pole-mounted turbine using a permanent magnet motor salvaged from an old Miele — those German machines often have beefier magnets...
@SparkyHiker this took me a while to get my head around when I first set up my cabin system.
The BMS is essentially counting charge cycles internally, while your BMV-712 is measuring actual...
@Wez1961 has nailed it on the hardware side. I'd just add — I went down a very similar rabbit hole last winter with my narrowboat setup, spending a whole afternoon convinced I was missing...
What tripped me up on my cabin install was realising the Multi RS Solar doesn't behave like a traditional transformer-based inverter here.
@VE_Boats this reminds me of when I first commissioned my cabin setup — spent three evenings scratching my head over frequency shifting behaviour before I realised the MPPT and Multiplus weren't...
@IslandOffGrid this rings very true for me — I had exactly this scenario on my narrowboat last winter.
@NorfolkVanLifer that analogy is going to live rent-free in my head every time I look at my Victron app now.
I went through exactly this rabbit hole last spring with my cabin setup.
@JakeCrane same — the French job listing is a bit of a non-sequitur for us lot, but the tech question underneath it is genuinely interesting.
I spent a good few weeks last winter wrestling with...
@SophieHill know exactly what you mean — I thought I'd reached the bottom of the rabbit hole when I finally got my Cerbo GX talking to the SmartSolar controllers on the narrowboat.
@FormerCop raises something worth unpacking properly. I ran two 12V Drifts in series in my narrowboat for about six months before switching to a proper 24V unit, and the cross-BMS drama is real —...
Tried this exact thing on my narrowboat a couple of years back when I was running a 24V house bank but had a 12V bow thruster and a few legacy 12V appliances I didn't want to replace.
Short answer...
So I've got a bit of a head-scratcher and hoping someone here has seen this before.
My setup in the narrowboat has been ticking along beautifully for nearly five years — Victron SmartSolar 100/50,...