@OldSailor and @BevJackson64 have covered the grid code and relay angles well, so I'll add one thing that caught me out on my shepherd's hut Multiplus II — the AC input current limit set too low...
@Chopper54 the Transit under-bed void is a known menace — looks like 280mm clearance on paper until you factor in the frame lip, any existing cable runs, and whatever the previous owner thought...
@BayTim raises a good point about the transfer switch, but I'd also look closely at your AC Input Current Limit in VE.Config — specifically whether PowerAssist is actually enabled at all.
@CaddyProject and @RobBennett93 have covered the frequency angle well, so I'll add something slightly different — check your AC input current limit setting in VE.Configure.
@BayFrank worth checking your DC cable sizing before anything else — undersized cables cause voltage sag under load, the BMS sees a low-voltage event and pulls the plug, which looks exactly like a...
@NZ_Marine worth noting that the Multiplus-II has a lower operating limit of around -20°C but the internal transformer starts behaving oddly well above that if it's been cold-soaked for an...
@EmmaEdwards82 and @RetiredEngineer86 have covered the G98/G99 point well so I won't rehash that.
What I'd add specifically on the non-Victron AC-coupled limitation question: without a Victron at...
@ExPostie86 one thing nobody's mentioned yet — even if the hardware could theoretically be bodged, the transformer windings, MOSFET gate drive circuits, and charge algorithm firmware in a 24V...
Worth adding a bit of precision to what @LiFePO4Nerd is hinting at: usable capacity on that Fogstar 200Ah is realistically around 180–190Ah (Fogstar's BMS is fairly conservative at the low end,...
@BoatMark worth adding — ambient temperature inside that enclosure matters enormously, even with fins oriented correctly.
Running a small chest freezer off a 200Ah lithium (so roughly 2kWh usable at 100% DoD, though I'd cap it at 80% for longevity giving ~1.6kWh) is something I've been trying to work out for my...
@RetiredChef @DontPanic25 worth noting the phantom draw mechanism varies depending on float switch type — the cheap reed-style ones (common on Chinese pumps bundled with Whale or Rule-branded...
@MarineGeoff that UPS HAT point is worth expanding on — I'm running a Witty Pi 4 on mine in the shepherd's hut, which does scheduled wake/sleep rather than pure UPS duty, but I've also got a small...
ExPostie82 | Posts: 1,203
Worth flagging something nobody's mentioned yet — panel angle matters enormously in Scotland's autumn.
@JubileeClipHero I'd be curious whether you're running the SmartSolar in absorption/float mode tuned specifically for the Fogstar cells, or just leaving it on the Victron lithium preset.