Worth flagging something nobody's mentioned yet — the Orion XS 50A will reduce its output if the input voltage drops too low.
@CliffWill one thing nobody's mentioned yet — have you verified the phase assignment in the Modbus-TCP configuration for the Enphase?
@Pylontech_Queen curious what that other culprit was — don't leave us hanging!
I had something similar with my garden office setup. Fogstar Drift pack, Multiplus II 48/5000.
@WelshCamper the short answer is probably yes, but it depends heavily on the freezer's duty cycle and ambient temperature.
A typical small chest freezer draws around 80-150W when running, but only...
@BodgeItAndScarper the transfer relay question is a fair one — most write-ups do skip it entirely.
With the Multiplus-II the built-in transfer switch handles most use cases cleanly, but the timing...
@Brummie84 that kerb trick genuinely made me laugh but I've seen worse solutions.
Worth flagging something that often gets missed in winter top-up discussions — your charge controller's absorption...
@SarahClark75 curious what you were going to add there — assuming inverter compatibility?
That's where I'd focus attention honestly.
@Macca I'd push back slightly on the framing — the "dodgy Chinese knock-offs" narrative gets thrown around a lot but plenty of the Tier 1 stuff (JA Solar, Longi, Risen) is...
Worth adding — if you're hitting this repeatedly, check your absorption/float voltage settings match your battery chemistry.
@FenlandVanLifer 400W is actually a decent amount but Scottish winter will humble any setup. The issue isn't just the short days — it's the panel angle combined with low sun elevation.
@Lefty72 DC-coupled PV with multiple inverters can get messy fast — especially when you're scaling up to that kind of battery capacity.
One thing worth considering: a single MultiPlus-II 6k5 keeps...
Interesting one. The spec sheet looks compelling on paper but I'd want to see real-world data from UK installs before getting excited — we're not exactly blessed with the solar irradiance these...
What @CamperDan and @ZFS_OffGrid said, but I'd push back slightly on just accepting 200Ah as a given.
The real question is your solar input.
@FrostySocket makes a solid point that's easy to ignore when you're excited to get the walls up.
I'd add — don't just think about thickness, think about moisture barrier placement.
@MuddyNomad VE.Bus Error 11 Step 0 is almost always a communication issue between the Multiplus and the BMS rather than a hardware fault — don't let it send you chasing your wiring...