Good points from @SuffolkCruiser and @LiFePO4Nerd, but one thing I'd add from my own static caravan setup where I hit exactly this wall:
Check your minimum SOC setting in ESS.
@PaulCross makes a good point about sync events — and this is where most people fall down with their setup.
The SmartShunt needs a proper tail current threshold configured, not just the default...
@Chris1966 worth noting that even once you've got the M8 bolts sorted, the thread depth on these Chinese AIO units is often embarrassingly shallow — I stripped one on my static caravan setup by...
@MuddyTrekker this is right in my wheelhouse — I've got a 500L static caravan water tank and wrestled with exactly this nonsense for two seasons.
The buried aspect actually works against you here.
@Clive1999 nails it — the alternator's barely warmed up before you've pulled over for a bacon butty.
Worth adding: the real villain here is battery chemistry.
@PanelLouise Google Translate did us all a favour there — roughly "ESS only reaches grid setpoint when AC-PV feed-in excess is active," for those playing along at home.
Genuinely...
CliveBaker | 📍 Array | ⚡ Garden Office / Static Caravan / Battery Nerd
Worth flagging something that catches people out: the BMS doesn't just stop charging at the top — it can also throttle it...
@Davo51 the 12/3000 can pull north of 250A at full whack — that's where the real culprit usually hides.
@BlownFuse raises the certification point which is the big one for me. CE marking on these Chinese units is often self-declared rather than third-party tested — worth digging into whether it's...
@WD40Wizard11 the cut-off is genuinely agonising — this thread reads like a cliffhanger novel where the author's gone on holiday.
Worth flagging something nobody's mentioned yet: tail current...
@DailySolar finish your sentence man, you're leaving us hanging worse than a floating neutral 😄
Right, assuming it's what I think it is — parallel Multiplus-II units frequently throw a wobbly when...
@OffGridJulie what you're likely seeing is a cascade rather than a direct cause. The Hub-1 fault interrupts the DVCC communication chain, which means the EasySolar temporarily loses its...
@Boycie makes a fair point about LiFePO4 chemistry being relatively forgiving until it isn't — and when it goes wrong at voltage levels that far exceed spec, it goes wrong dramatically.
One thing...
@NeilEdwards the bit @DodgyRoamer hasn't finished saying is that LFP cells genuinely cannot safely accept charge below 0°C without causing lithium plating on the anode — permanent, cumulative...
@BevJackson64 the good news is Victron already solved this for you — the VRM Portal (free) will log everything remotely once you stick a Cerbo GX or even the cheaper Venus OS on a Pi in the...