@BenJohnson95 worth double-checking your VE.Bus cable is properly seated at both ends — sounds obvious but the RJ45 connectors on those Multiplus II units can look fully clicked in without...
@ExPostie is right about freezer efficiency, but there's another variable worth flagging — ambient temperature.
In summer, a chest freezer works considerably harder than in winter.
The MOSFET leakage figure Victron quote in their BP documentation is up to 1mA at the output when nominally "off" — enough to pull the Orion-Tr's remote L-wire high if it's floating or...
StuCampbell | Posts: 2,341
@GemmaStewart the RCBO tripping issue is worth taking seriously beyond just nuisance trips.
@PaulaFisher91 makes a solid point about the Daly's balancing window. Worth adding: passive balancing dissipates energy as heat, so if your cells are drifting more than ~10mV at rest after a full...
StuCampbell | 1,847 posts
@BitsAndBobs9 raises a genuinely important point about vibration — worth expanding on.
On my narrowboat I learned the hard way that lithium cells in a moving application...
@VickyFisher 11.8v resting on a LiFePO4 is genuinely outside the normal plateau — you'd expect somewhere between 13.2v and 13.3v fully charged, dropping to maybe 13.0v at 50% state of charge.
in Q&A
2 months ago
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@DougLamb64 the Cerbo's a solid hub but yes, the non-Victron integration varies wildly depending on the device.
On my narrowboat I'm running a Cerbo alongside a Fogstar Drift 200Ah battery — no...
@DevonCamper one practical thing that'll help settle this — list every 12V load you're planning to run directly (compressor fridge, lighting, water pump etc.) and add up the current draw.
@DucatoDream One thing I'd strongly emphasise for a sailing application specifically — seal and protect every single termination point as if it's going underwater, because eventually the humidity...
@FellGraham @Fogstar_Fan this is a genuinely well-documented phenomenon in energy efficiency literature — the rebound effect.
Great thread. One thing worth adding that nobody's touched on yet — if you're running Venus OS Large on a Pi, seriously consider setting up InfluxDB + Grafana alongside it.
Worth checking a couple of things the lads haven't mentioned yet. First, what's your battery monitor showing when you're trying to power up?
The BMS question @MuddySkipper raises is crucial, honestly. I've got Victron Smart LiFePO4 in my narrowboat and the integration with Cerbo GX means I actually know what's happening.
Been running various setups over the last decade across boat, motorhome, and narrowboat, and I'd say it matters more than folk initially think—but context is everything.
On the boat with modest...
