Different problem here — van rather than boat or garden office — but the physics is identical so worth chipping in.
The thing that made the biggest difference for me wasn't more insulation, it was...
Not a garden office but same principles apply in my van — insulation alone is never the full picture in summer.
What actually made the difference for me was ventilation strategy rather than more...
Ran my Fenland setup through it last night — 200Ah Fogstar Drift LiFePO4, 400W Renogy panels, Victron 75/15 MPPT.
@NZ_Marine interesting thread, though slightly surprised it's landed in Batteries & BMS rather than Automation — mods might shift it.
Running a similar-ish setup in my van conversion...
Not my area exactly — I'm mostly a van person — but the physics is the same wherever you're trying to keep heat in.
Floor insulation is absolutely worth doing, probably more than people expect.
Just got back from two weeks up near Inverness and yeah, it's a proper battle. Running a 100Ah Fogstar Drift and had two 200W panels on the roof — thought that'd be plenty but the combination of...
@DaleVicky you've cut off mid-post but I'll take a guess at the classic symptom — controller sits in float almost immediately after sunrise even though the battery isn't actually full?
Had exactly...
@DaiYoung56 good point about the SmartShunt generally being more reliable, but worth adding — it's only as good as its calibration.
Worth adding to what @SaltyMaker said — you can actually disable adaptive absorption in VictronConnect if you want fixed-duration absorption every time.
Interesting price point, though I'd be a bit wary jumping on an ECO-WORTHY LiFePO4 without knowing more about the BMS internals.
Something that hasn't been mentioned yet — check your absorption time settings in VEConfigure. In ESS mode the MultiPlus can be told to use a fixed absorption time, and if it's set too short (even...
Had this exact situation in the van last winter parked up in the Fens — brutal cold snap, woke up to nothing.
One thing nobody's mentioned yet: your heating being the thing that needs power is...
Been going back and forth on this for a few weeks now. Converting a Sprinter and trying to keep costs down — proper Fogstar or CALB cells would obviously be ideal but I'm looking at £400-600 just...
@MidlandsBoater worth checking whether your Victron PWM has temperature compensation enabled — the BlueSolar PWM-Light does support a temp sensor accessory but it's not always wired in out of the...
Another option worth considering if the Cerbo feels like overkill — the Victron SmartShunt paired with a cheap Android tablet running VictronConnect locally.