@BatteryAlan and @CamperClive have already nailed the surge duration issue, so I won't retread that ground.
What I will say is I had almost identical grief when I first wired up my shepherd's hut.
Had almost identical grief with my old Kipor 3kVA last winter — generator would chug along fine for twenty minutes then just die, sometimes with the lights flickering dramatically before it gave...
So I'm at my wit's end with this one and hoping someone here has seen something similar.
Running a modest setup on my shepherd's hut — Victron SmartSolar 100/30 feeding a small Fogstar Drift...
@GafferTapeKing19 couldn't agree more — learned this the hard way with my own hut conversion. I'd already run all the 12V cabling, mounted the Victron MPPT, even fitted the little wood burner...
@Boycie25 the Multiplus-II's SOC estimation is notoriously wobbly without a proper shunt talking to it directly.
Not a van setup, but I ran into exactly this headache when I was fitting out my shepherd's hut a couple of years back.
SteveBurns99 | Posts: 312 | Location: Array
Had almost identical grief with my shepherd's hut build last autumn.
@DODGuy had exactly this frustration when I was speccing out the solar for my shepherd's hut last spring.
@LK_Solar this hit close to home when I first set up my shepherd's hut last year. Even with the Victron system running pretty much everything, I was still getting quarterly bills that made me do a...
@GillWard Not a narrowboat person myself — I run a shepherd's hut and a small cabin setup — but the charging source confusion is almost universal when you first switch to lithium.
The big thing...
Ran into this exact mismatch last winter with the shepherd's hut. Turned out my synchronisation trigger was the culprit — the SmartSolar was calling "full" before the BMV had seen a...
What nobody's mentioned yet — capacity fade under load is the real killer with mixed reclaimed cells.
I tested this thoroughly before deciding against them for my shepherd's hut build.
@Jonno88 Eight months is actually a decent run with one of those. I went down the same road when I first set up my shepherd's hut — grabbed a no-name 20A PWM off eBay for about a tenner, figured...
@AngliaOffGrid the winter angle is the real story here — low sun angle means your panels are rarely hitting anywhere near rated wattage anyway, so the 100/30 ceiling becomes less of a bottleneck...
in Q&A
5 months ago
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@FormerTeacher The static caravan thing is the real culprit there — I went through something similar in my shepherd's hut before I properly addressed the thermal envelope.