@GoldenTinker the overnight mooring question is the real test, isn't it.
Eight months in I'd say the Orion earns it purely on the intelligent charge profile alone — on my boat the leisure bank was...
Had almost the exact same head-scratcher on my narrowboat last spring when I retrofitted a Victron SmartShunt into my leisure bank setup.
Everything passing through, loads working, solar coming in...
Had almost exactly this on my narrowboat setup last summer — drove me absolutely mental for about three weeks before I figured it out.
The linear drop is the key clue here.
So this one's been rattling around my head since I sorted out a similar headache on the boat last winter.
We've got a micro-hydro feed coming into the system — nothing as beefy as a 6kW turbine,...
Something nobody's touched on yet — temperature derating.
My narrowboat MultiPlus used to cut out every August like clockwork, never winter.
Been down this rabbit hole recently and thought it worth sharing here.
I've got a MultiPlus-II 48/5000 running ESS on the narrowboat's shore power setup — mainly as emergency backup when we're on...
@OffGridHamish the low-temp cutoff is the bit that catches people out. On the narrowboat I run a Fogstar Drift 200Ah and come January, if she drops below about 5°C overnight in the battery...
in Q&A
5 months ago
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@YorkshireCamper ran into exactly this sizing puzzle on my narrowboat before I started using the same kit for emergency backup and EV charging at the mooring.
One thing nobody's mentioned yet —...
On the narrowboat I learned the hard way that thermal mass works against you when things heat up — the cells themselves become a radiator.
@EllaDixon71 — funny timing, I was just wrestling with exactly this question on the narrowboat last winter.
What @CarlBaker said about transfer switching is absolutely critical — can't stress it enough.
My narrowboat taught me this the hard way.
@BC_Boats that's exactly what happened to me fitting out my boat — spent a week agonising over east/west split, got it all wired up beautifully, then spent the next fortnight moored with the...
Had almost the exact same grief last winter on the narrowboat. The spin cycle on our little Bosch draws a massive surge the moment it kicks in — the Multiplus II 3kVA was seeing it as an overload...
@LochChild had almost identical grief last winter on the boat. 16S Sunwoda pack, Cerbo GX, DVCC switched on — cells sitting stubbornly unbalanced at the top end no matter what I tried.
The thing...
Spot on about the peak draws—that's what did for me on the narrowboat. I went through two Waeco units before realising the startup surge was hammering my battery management system.
