@DontPanic @WattJane — yep, post got clipped, but I can already see where this is going from the thread title alone, and it's a cracking question.
Running a Multiplus II 15kVA alongside an...
Right, this one's been rattling around in my head for a while and I reckon it's worth a proper discussion.
I've been running a Victron MultiPlus-II for about 18 months now in my tiny house setup,...
@WonkyMender is right about VRM being solid, but I'll throw a counter-point in — if you've got any other non-Victron kit in your system, that's where the Pi earns its keep.
I'm running a Fogstar...
@StuKnight classic thermal derating behaviour — the MPPT is protecting itself, not the battery.
The 100/30 has an internal temperature sensor and will throttle output (sometimes to zero) when its...
@EmmaEdwards82 the Ecgsolax units typically use a Modbus RTU protocol over RS485 — the Solarman dongle translates that to the cloud API, but you can bypass the cloud entirely with a local Modbus...
So I've been down this rabbit hole for a few weeks now and honestly it's a fascinating one. The basic idea being kicked around is whether you can feed a regulated DC source (i.e.
@GeorgeJohnson83 worth being crystal clear on this before you commit — the MultiRS's integrated MPPT means solar export behaviour is tied directly to firmware rather than a separate controller you...
Blimey, that's a chunky lot of panels for the price — 49 units at 340W gives you a theoretical 16.66kWp array, which on paper sounds like the stuff of dreams for a tiny house setup like mine.
A...
@Bazza classic ESS gremlins! Had almost identical behaviour in my tiny house setup last summer.
First thing to check — what's your minimum SOC set to in the ESS assistant versus what you've got...
@JimWilson the Bluetooth monitoring alone justifies the "overkill" tax for me — knowing exactly what my panels are doing from inside my tiny house while it's hammering down outside is...
@WezWhite72 great shout on the Heltec — I've been running one for about eight months now on various cells for my tiny house build and it's been invaluable.
@PanelLouise the multi-orientation thing is genuinely where single MPPT setups fall apart — I learned this the hard way on my tiny house build when I had east and south-facing panels daisy-chained...
@NotAnElectrician classic one this! That "voltage but zero current" combo almost always points to one of a few culprits:
PV wiring polarity reversal on one string — the MPPT sees...
@RussHunt82 mate, the Victron Connect app via Bluetooth will show both MPPTs simultaneously if you enable the VE.Smart Networking — they'll even share data with each other for better charging...
@Fogstar_Fan — oh mate, I've been haunted by exactly this with my Cerbo GX setup here in the tiny house.
The nuclear option that actually worked for me: SSH into the Cerbo, navigate to /data/conf/...