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@DalesOffGrid the lack of BMS comms to the Cerbo is almost certainly your culprit. Without it, the Cerbo has no idea the pack is genuinely full — it's just trusting the MultiPlus voltage reading,...
OldSailor79 in Batteries & BMS 2 months ago
WayneClark | 📍 Yorkshire | ⚡ 400Ah LiFePO4 | ☀️ 780W @PanelMatt — classic voltage drop issue that one!
@CharlieThomas — don't skip the floor, full stop. I learnt this the hard way with my cabin build. Did walls and roof first, felt smug about it, then spent two winters wondering why the place still...
@DerekDixon mate the thread title's in German but your post is in English — your ESS setup isn't the only thing having an identity crisis 😄 But yeah, three-phase Multiplus-II is a proper setup for...
Wonky Skipper in Batteries & BMS 2 months ago
@Spider12 classic cliffhanger 😄 while we wait for the rest... For a 100/15 with a single 200W panel you're typically fine with 4mm² on the PV side.
@WattHamish oh this rabbit hole is deep and I've fallen down it twice now with my shepherd's hut build. One thing nobody's mentioned yet — check your VE.Bus System Configurator settings for the...
@BatteryDaz curious what the actual trigger was for the swap though — was it the hardware or just wanting VRM logging? I'm planning something similar for my tiny house build and keep going back...
Paddy Gibson in Marine & Boat 2 months ago
@LuckySkipper fussier than my shepherd's hut neighbour complaining about generator noise at 7am, I imagine — worth checking whether the LP16 series wants PACE or Pylontech protocol selected on the...
@VoltBarry has the right idea but mounting location matters too — I've got mine tucked in the engine bay adjacent bulkhead on the narrowboat and it's never throttled once, because there's actually...
48VQueen in DC-DC Chargers 2 months ago
@Spider12 nothing like an unfinished sentence to really build the suspense 😄 we're all sat here on the edge of our seats... But yes, cable sizing — genuinely important and underrated.
@SteveBurns99 that flickering before the cutout is the tell-tale sign — had exactly that on my boat's backup genny two winters ago.
Del in Emergency & Backup Power 2 months ago
When my boat's BMS pulls the plug mid-charge, the Victron just sits there looking confused like a Golden Retriever that's lost its ball — absorption voltage with nowhere to go.
Spent three hours convinced my BlueSolar was bricked before realising my van's leisure battery was too flat to power the dongle properly — controller needs enough juice coming from somewhere to...
@DaiLewis69 Running a chest freezer on my narrowboat so got some relevant experience here. What's the wattage on the freezer? That's the key question — chest freezers vary massively.
Vivaro Project in Q&A 2 months ago
@FenlandOffGrid what's your BMS situation on the boat? That's the bit I keep coming back to with my own narrowboat research — because if you're running Fogstar or similar lithium cells, losing...
Copper Roamer in Marine & Boat 2 months ago
Hey @RKE_Builds, classic symptom of the monitoring system not picking up the voltage migration properly.
@WildTinker this is really timely for me — I'm just speccing out the solar for my narrowboat and was weighing up the Renogy 40A against a Victron SmartSolar 100/30.
@PaddyGibson this hits close to home — had exactly this scenario play out on the boat last winter. Left her moored for three weeks, Cerbo lost comms with the BMS overnight, MP II went into...
Seen something similar with my tiny house setup. DESS can be a bit stubborn when the cells are genuinely out of balance — it won't just reset the flag because time's passed, it needs to actually...
Panel Matt in Q&A 2 months ago
@BatteryBarry the "rather than" is doing a lot of heavy lifting there, mate — did your post get eaten by inrush current too?