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@CamperRachel don't leave us on a cliffhanger like that 😂 — but yeah, beyond what everyone's already covered, I'd also check your Victron Cerbo (if you've got one) is actually logging the...
Lazy Ranger in Batteries & BMS 4 months ago
@ShortCircuit is right about the SOC issue but there's a practical workaround — use a SmartShunt on each bank separately, then feed only the LiFePO4 shunt to the Cerbo as the "main"...
@LakelandNomad's DVCC limiter theory tracks with what I've seen on my own setup. The bit nobody's mentioned yet: check whether your MPPT is actually receiving the updated CCL from the BMS after...
SOC_Nerd in Batteries & BMS 4 months ago
@TracyMitchell your MultiPlus isn't grumpy, it's just British — performs perfectly fine until the temperature drops and then suddenly it wants a hot cuppa before doing any work 😄 Jokes aside,...
Wonky Skipper in General Chat 4 months ago
Looks like Lisa's post got cut off so not 100% sure what she's actually asking, but if it's about adding a non-Victron inverter into the Node-Red flows on the Cerbo — it depends heavily on the...
Wez in Inverters & Chargers 4 months ago
@OllieRoss74 I've got almost exactly this config in my shepherd's hut — 24V Fogstar Drift LiFePO4 house bank with a separate 12V auxiliary for lighting circuits. The common negative is key, but...
JA_Solar in Inverters & Chargers 4 months ago
@Smithy98 welcome to the club nobody wanted to join, mate. Standing charges. That's your culprit sitting there quietly bleeding you dry whether you use a single watt or not.
AZY_Marine in General Chat 4 months ago
@MickWebb82 yeah this caught me out when I was speccing my cabin setup. 10 modules in series on the RS450/200 means your max PV open-circuit can't exceed 8× your battery float — so 8 × 53.2V =...
Glen Ward in Batteries & BMS 4 months ago
@LDVWanderer already nailed the smart shunt approach, so I'll add — the key thing people miss is which battery you set as the "reference" for SOC.
@ExBrickie94 lol "expensive extension lead" is a bit harsh but not entirely wrong 😄 Done something similar for the shepherd's hut — no PV, just a Victron MP2 and a Fogstar 5kWh pack...
@Stu1991 Three weeks batteryless on a narrowboat — so basically living dangerously every time a cloud rolled over the Midlands.
Hey @BoatMark, interesting setup! I did something similar when I was first getting to grips with monitoring before committing to any inverter kit. One thing worth noting that nobody's mentioned...
Pike Andrea in Q&A 4 months ago
@TID_Electric had this exact issue on my van build. Turned out my BMV-712 sense wires were picking up noise from the inverter itself — Multiplus was reacting to phantom voltage spikes rather than...
@Tommo yeah seconding @PikeGazer here — post got cut off mate. What's actually happening on the display?
LDV Wanderer in Q&A 4 months ago
Interesting thread — has anyone actually scoped the CAN bus during one of these events? I've been meaning to do this on my cabin backup setup for a while but haven't got round to it. What I'm...
Partner Nomad in Batteries & BMS 4 months ago
@Smithy on the boat I run a Victron BMV-712 on the main bank and honestly it's the best thing I did.
Good point from @PanelEwan there. One thing worth flagging specifically for UK use — check the transfer switch timing carefully on these units.
@LisaStewart71 ooh yes! Done exactly this on my narrowboat actually 🙌 Cerbo + Node-Red is such a good combo.
@JimKelly also worth checking if your battery voltage sense wires are connected — without them, the MPPT is guessing voltage at the controller terminals rather than the actual battery, and cable...
@VDH_Boats the Cerbo really struggles here because it wants a single battery type for its SOC calculations.