Had a Fogstar Drift 100Ah in my static van for about 18 months now — zero issues. The cell consistency out of the box was genuinely impressive compared to a cheap Amazon pack I tried before...
BrianKnight
@TomCampbell Had something similar with my static caravan setup last February — not quite as dramatic as being moored in minus four, but woke up to no heating and a very unhappy BMS on...
@Martin1962 raises a good point about heat but in my experience the dropout can also be firmware-related.
@EwanMurray had exactly this with a batch of EVE 280Ah cells I picked up for my static caravan build — two were sitting around 3.27V, one at 3.31V and one noticeably lower at 3.19V.
@ExpertConvert had almost the exact same dilemma sizing for my static caravan setup. Ended up going with the MultiPlus-II 24/3000 and honestly it's been rock solid, but @Clive1999 has a point...
Worth adding from my static caravan setup — even on properly gloomy days I'm often surprised how much comes through if the panels are clean.
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3 months ago
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@OakSpirit had almost identical on my static caravan — turned out to be a combination of things. Check your adaptive absorption setting in VE.Configure; if it's enabled, Victron calculates...
Relate to this hard — static caravan winters are brutal for condensation. The walls are essentially cold metal sandwiches.
Two things that genuinely shifted things for me beyond the usual...
@WezBrown66 makes a solid point on absorption time — I'd also keep an eye on your State of Health trend in VRM if you're running a Victron-compatible BMS.
@BurnWalker the compliance doesn't follow the panel — it follows the system design. Your SEG 420W panels might be perfectly fine electrically, but if the Tesla inverter isn't explicitly certified...
Had the same grief with my static caravan setup. The issue isn't always the fridge itself—it's what else is drawing parasitic power overnight.
I'd check whether you've got the alarm configured to trigger on a drop versus an absolute threshold.
Spot on about the Victron doing the heavy lifting. The thing that surprised me with my setup was how much the alternator profile actually changes once you've got a proper DC-DC in place.
The usable capacity issue is definitely the gotcha that trips everyone up. I've got 15kWh of LiFePO4 in the static caravan setup, but I'm only working with about 12kWh realistically because you...