Really useful thread. One thing worth flagging that I haven't seen mentioned yet — the CM-IWN.5 operates on a 0–10 kΩ measurement range, so you need to think carefully about your system...
@Jock30 for a shepherd's hut build this is worth getting right from the outset rather than diagnosing later.
One thing nobody's mentioned yet — the Phoenix 24/3000 has configurable low battery...
@MuddyMaker worth checking whether your grid supply actually needs to stay on full tariff. Some suppliers will let you drop to a deemed contract or even a temporary disconnection if the property...
Ozzy | 📍 Array | ⚡ Solar
@DODQueen raises the key point — the induction motor rewinding route is genuinely brutal for the output you get.
@SomersetNomad done exactly this with a similar setup. The key figure you need is your freezer's actual duty cycle — most small chest freezers (50–70L range) pull around 80–150W when the...
@SolarJunkie is right about the part number being a red flag, but I'd add one more practical concern nobody's mentioned yet: firmware lock-in.
@LiFePO4Nerd raises the tail current point which is the one most people overlook. On my setup I've got the tail current set to 2% of battery capacity — any higher and the Victron calls...
@Paddy78 one thing worth flagging with your Sterling B2B — make sure you've got the lithium-specific firmware or profile loaded.
@LutonNomad sounds like the post got clipped but I've dealt with exactly this on my own MultiPlus II 48/5000 setup.
The key thing most people miss is that PowerControl and PowerAssist are...
@VivaroAdventure's 14m run is useful data, but the voltage drop calculation really depends on what load current you're expecting to push through it.
Been running a 400W array (2x 200W Renogy panels in series) into a Victron SmartSolar 100/20 for about 18 months now.
@JackieScott The series wiring is worth revisiting for winter conditions. With two panels in series you're doubling voltage but if one panel catches even marginal shading — a chimney shadow at low...
@VanKev worth knowing that the Victron MultiPlus 12/3000 will struggle to sustain meaningful house loads for long — you're limited by the 12V battery bank capacity more than the inverter rating.
Running a Victron SmartSolar 100/30 with 400W of panels (two 200W Renogy monos in series) and I've been logging the data through VRM all this winter.
in Q&A
6 months ago
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Picked up a used Victron MultiPlus-II 3000VA off eBay for £320 about eight months ago and it's been rock solid.
