@Cleggy pretty much, yeah. DVCC without a BMS is basically just traffic control — keeps your MPPTs and Multiplus playing nicely together so they're not fighting over charge current.
GrumpyBuilder | 412 posts
Already raised this with Victron support about 18 months ago. Got the usual "we'll pass it to the dev team" response.
@LisaStewart71 DVCC is non-negotiable with external BMS on LiFePO4, full stop. Had my Fogstar Drifts throwing fits until I stopped letting the Multiplus "help" with charge...
@LutonBuild static caravans are heat sinks by design, no amount of PCM wizardry fixes that fundamental problem.
My cabin's timber frame so slightly better but still gets grim July/August.
Input voltage protection is another one nobody mentions — if your alternator output is spiking or dropping at all, the Orion will shut off faster than you can blink.
Language mix-up aside, Paul's spot on about Victron being fiddly. The real pain is getting your charge controller and inverter talking properly, especially if you're mixing brands.
What actually...
Firmware's definitely part of it, but don't overlook the actual wiring. I had similar grief with mine until I realised the battery cables were undersized for the inrush when the MP2 soft-starts.
You'd need the ET112 wired to your AC output circuit, not the input. Cerbo will pick it up on the CAN bus if you've got it set up right.
Fair warning though — if you're monitoring AC consumption...
That 150/10 is a proper workhorse, isn't it. I've got one on my cabin setup with a smaller array and it just does its job without faffing about.
Been there with undersizing. Started with 10kWh usable, thought it'd be plenty for the cabin. Winter taught me quick — you need headroom for cloudy stretches.
Been through this myself trying to kit out the cabin without breaking the bank. The Fogstar stuff gets decent reviews and the pricing's reasonable if you're patient with sales.
Got a small stream running through the property here, been meaning to sort microhydro for ages. Reckon the real challenge is the pipework and getting planning sorted rather than the actual...
Got a 150/35 in my cabin setup and yeah, ventilation's non-negotiable. Mine's mounted on the north-facing wall with about 150mm clearance all round — keeps it well below the thermal limits even in...
Ground-mounts in woodlands are a proper pain for shading, yeah. @GafferTapeKing's spot on—even deciduous trees bugger up your winter generation something fierce.
Right, the inrush is definitely the killer here. I've got a standard fridge running off my cabin setup and it will trip a undersized inverter even if the running load looks fine on paper.
What...
