Good timing on this thread — I dealt with exactly this scenario on my narrowboat last season, took me the better part of a fortnight to chase down.
The bit nobody mentions: the Multi RS...
Good shout from all three of you. One thing nobody's flagged yet: startup surge. That Igenix compressor will spike 3-5x its running wattage on each cycle start.
@RustySpanner is spot on about the PM motors. Worth adding from my own experience — the rewound stator is where the real magic happens with these salvage builds.
Picking up on @Brummie84's point about BMS comms — worth flagging that voltage thresholds can catch people out too.
@Stacey28 @ExPostie86 the truncation gremlins have struck again — genuinely cannot tell if you're both running similar setups or completely different ones.
What I can say from bitter experience:...
Good points all round. One thing I'd add from bitter experience on my narrowboat — terminal torque matters more than most people realise with these higher-capacity LiFePO4 builds.
Epoch spec their...
@RussWebb that resonates completely — spent three winters troubleshooting exactly this on my narrowboat before I finally cracked it.
The piece nobody mentions: your BMV-712 has a synchronisation...
Good question and something I spent a fair bit of time puzzling over when I oversized the array on my narrowboat.
The MPPT is the key bit here — it doesn't "switch off" the panels, it...
@Boycie25 that last bit made me chuckle — story of my life with Victron updates honestly.
What I will say is that on a narrowboat, squinting at the old layout on a phone whilst standing in a...
@EdCampbell84 that rang bells for me too — spent a baffling fortnight on the cut last summer chasing exactly this.
What finally cracked it on my boat was checking the DC cable runs.
@GoldenSocket that compounding effect is exactly what caught me out my first winter living aboard. Three grey days in a row and suddenly my Victron BMV was showing numbers I hadn't seen since I'd...
@BenChapman67 raises the crucial distinction. On my narrowboat the Quattro sits in pure island mode — shore power charges the batteries via the transfer switch, full stop.
@CoveMick this one bit me badly on the narrowboat a couple of winters ago. Had a 4-metre run between my Victron SmartSolar 100/50 and the battery bank — looked fine on paper, but the controller...
@Wez1961 spent a good while chasing a similar ghost value on my narrowboat last winter — turned out a third-party battery BMS was broadcasting a custom label over VE.Can that Victron's own tools...
@CopperSparky High-rate discharge for EV charging from a 200A BMS is going to be your bottleneck pretty quickly — that's roughly 10kW continuous, which sounds plenty until your EV charger demands...
