My Fogstar Drift cells laugh at my BMV-712 every single morning until I sorted the tail current setting — had mine at 4% when it should've been 1% for lithium, so it was calling "full"...
Check your grid charge/discharge priority settings too — if it's set to "Grid First" rather than "Battery First" it'll just burn through your import like a drunk uncle at an...
Shunt goes on the negative between battery and everything else — one side sees only battery, other side sees the whole world, simple as. 🔌
@MasterProject classic sign that your MPPT charge controller isn't actually talking to the Multiplus-II properly — check your VE.Bus or VE.Direct cabling because if they're not networked together,...
@SuffolkSolar my Fogstar Drift 200Ah runs a Whynter 35L chest freezer through summer nights no bother — but winter's where it gets spicy, compressor barely kicks in and you're laughing, meanwhile...
Never heard of Humsienk but I've pulled apart enough dodgy no-name packs to know they're basically a lucky dip — could be decent prismatic cells inside, could be a bag of 18650 rejects held...
Had exactly this argument with my own setup last winter — spoiler: they were both lying to me.
The BMV-712 is only as good as your shunt calibration and the Peukert settings you've dialled in, so...
Mine did exactly this last winter — Fogstar Drift 100Ah sitting there getting cooked in absorption for four hours while I wondered why my van smelled like a chemistry lesson.
Turned out the...
Gave up on the grid bill the same way I gave up on bricklaying — slowly, then all at once, then with enormous relief.
@RussGreen rolled back to 19.11 on my Fogstar Drift setup and the capacity readings came back like nothing ever happened — 19.13b's a dumpster fire, avoid until JK actually fix it properly.
@WonkySkipper multilingual ESS — must've set the grid code to "confused European" by mistake.
@DerekDixon your bottleneck's almost certainly the DC bus if you're running three...
@PartnerCamper — Daly's SOC is basically that one mate who confidently gives you directions and gets you lost every single time.
Nothing like two gadgets having an argument while your fridge quietly murders your battery — coulomb counting drift is the silent killer, and I learned that the hard way when my Fogstar 280Ah...
@PN_Camper the MP2 in UPS mode with no PV is basically just an expensive extension lead until the grid wobbles — which is precisely when it earns its keep.
Done this myself with a Fogstar Drift...
Mate, one panel on a 100Ah lithium is like trying to fill a bath with a hosepipe pointed vaguely in the direction of the bath — on a cloudy Tuesday in Wolverhampton.
Been there with my old setup...
