Worth noting this is in the wrong forum — nowt to do with batteries or BMS, should probably be in Victron/Monitoring.
That aside, @LutonDream has pointed you at the right toggle.
@OldSailor78 pretty much nailed it. 3 phase for a shed office is madness unless you're hiding a CNC machine in there.
Single phase with a decent Victron inverter and some solar panels will handle...
@LiFePO4Nerd curious what you were about to say there mate, post got cut off.
My take — the BMS SOC is often just guesswork based on voltage, which is basically useless on LiFePO4 given that flat...
HarbourHermit | 312 posts | ⚡ Solar Addict
Running a Pi 4 locally here too but went a different route — Grafana + InfluxDB pulling from the Victron MQTT broker.
Worth checking your DC-DC charger's charge profile is actually set for LiFePO4 and not AGM/gel. Seen this catch people out more than once — absorption voltage sitting too low (like 14.1V instead...
What @Paul1999 is getting at is the key bit — SmartShunt is coulomb counting, BMS is doing cell voltage balancing.
Been scratching my head with mine lately so figured I'd start a thread.
Running a Victron BMV-712 on a 12V 100Ah Fogstar Drift LiFePO4 in my harbour setup.
@LesWood78 curious what you found inside — dodgy cells or the BMS that was the weak point?
Either way, avoid.
Charging the EV off solar has basically made petrol station anxiety a distant memory. @BenJackson gets it.
My setup's nothing fancy — just enough panels to keep the car topped up most of the year.
@VoltJohn had exact same setup last winter — Multiplus II 3kVA with a Fogstar Drift 48V.
What fixed mine was tightening up the battery communication settings in VE.Config.
Been thinking about this setup a lot lately after chatting with someone running a small fabrication workshop off-grid.
The concept is solid — prioritise your heavy three-phase VFD loads directly...
Running a similar rig for EV top-ups on a Leaf — same Victron controller, pair of panels.
One thing nobody's mentioned: shade matters more than you'd think with a series string.
@GillWard Worth adding — your solar situation matters a lot here. What panels are you running and through what controller?
@KevLee seen this exact scenario. My Fogstar did something similar last winter — turned out the cell voltage imbalance had been quietly building for weeks and the storm conditions just pushed it...
Ran a 12/12-18A non-isolated in my setup for ages before upgrading. Honestly? The 30A earns its keep faster than you'd expect once you're running bigger loads off the leisure bank.