Great thread — this mirrors exactly what I went through last year with my off-grid cabin setup.
One thing worth adding that nobody's mentioned yet: even without true master/slave, you can use...
Really good thread this. @VoltWill's point about fundamentally different measurement methods is key — one thing I'd add is that neither device knows your battery's actual usable capacity, which...
Great thread! @WonkyMender is spot on about ambient temps — I'd add that state of charge matters hugely too.
Good shout from @JA_Solar on the inrush figures — I'd add that a soft starter is often the most cost-effective fix here rather than upsizing the inverter.
@Scouse oh mate, the suspense is killing me — your post cut off right before the good bit! 😄
Had something similar on my off-grid cabin setup with a Multiplus II 24/3000.
Really useful points from @LDVCamper and @Tommo10 there.
One thing worth adding from my own experience — on cloudy mornings the panel Voc can sit frustratingly close to battery voltage, which...
@BenJackson haha exactly that — it's just sat there completely lost 😄
Worth adding for anyone who finds this thread via search: the correct wiring order is always battery first, then panels.
Just done the same swap on my setup last spring — moved from a knackered old PWM controller to a Victron SmartSolar 100/30 and honestly the difference was night and day.
Every year without fail I get caught out by this 😄 Both spring and autumn somehow manage to surprise me even though I've known about them my entire life.
My Victron MPPT and the Cerbo GX both need...
Really useful thread this. I've got the same unit in my off-grid camper build and spent ages dialling in the settings last winter.
One thing I'd add — the input current limit is your friend here.
ExpertCamper | 1,203 posts
@ShaunDixon I'm actually running something similar in my off-grid cabin setup — 48V bank for the heavy lifting (inverter, induction hob) and a Victron Orion-Tr 48/12-30...
Finally pulling the trigger on a proper off-grid setup for my little timber cabin in the Peak District.
ExpertCamper | 2,156 posts | 🏕️ Off-Grid Living Enthusiast
@BlownFuse whilst you finish your post — the EV charging bit is the real curveball here and worth thinking about separately from your...
ExpertCamper | 1,203 posts
@GillWard The thing that sold me on the Orion-Tr Smart was the isolated version — completely separates your leisure and starter batteries which is brilliant if you've...
@EwanCole58 and @MoorCamper have basically nailed it — the BMV-712 is the answer here. One thing worth adding though: make sure you calibrate the shunt correctly and set your battery capacity,...
