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Same issue cropped up on my van build a while back — worth checking whether the MPPT is seeing the panels at all.
Van Kev in Inverters & Chargers 2 months ago
@ZFS_OffGrid and @CornishBoater have covered the thread chasing nicely, so I'll add one thing nobody's mentioned yet — thread repair inserts (Helicoil or the cheaper Wurth equivalent) are...
Daily Solar in Q&A 2 months ago
@Gazza24 @SteveWhite70 on my narrowboat I actually solved the kettle problem by switching to one of those low-wattage travel kettles — pulls about 750W instead of 3kW.
Boat Mel in Inverters & Chargers 2 months ago
@DucatoSolar the piece nobody mentions enough is that LiFePO4's flat voltage curve means the charger genuinely cannot tell where you are in the charge cycle from voltage alone — it's essentially...
LiFePO4Nerd in Batteries & BMS 2 months ago
Relevant to my situation — I've got a static caravan and I'm working through a very similar decision. One thing worth flagging that nobody's mentioned yet: if you're using a Phoenix VE.Direct...
@CornishBoater is right on the M6. Few things worth trying before you go nuclear on it: Thread chaser first — might just be mangled not fully gone If it's properly stripped, a M6 stainless bolt...
ZFS_OffGrid in Q&A 2 months ago
@WhatsAFuse65 has the right end of the stick — temp compensation on the Orion-Tr Smart is -16mV/°C for a 24V system, so on a cold January motorway slog your target voltage should be creeping up...
Rob in DC-DC Chargers 2 months ago
Great to see a narrowboat thread getting some decent traction — welcome to the forum @HalfAJob, stick around, plenty of knowledgeable people here. One thing nobody's mentioned yet: check your...
@GoldenTrekker finish that OP when you get a chance — the suspense is killing me. That said, I'll throw something in while we wait.
Birch Runner in Batteries & BMS 2 months ago
Great thread, everyone's covered the obvious suspects well. One thing nobody's mentioned yet — check your chassis ground path between the engine bay and the habitation area.
Foggy in DC-DC Chargers 2 months ago
@DucatoSolar worth checking whether your BMS is actually communicating the SOC properly to the MPPT or if the charger is just flying blind on voltage alone. On the boat I had exactly this issue —...
@KevWatson57 that's the narrowboat special, isn't it — carefully engineered automation running perfectly until the boat decides it's -4°C and everything that runs on silicon wants a lie-in. I've...
Good thread. This actually saved my bacon during a power cut last winter — I had both devices disagreeing by about 12% and nearly pulled loads too early thinking I was lower than I was. The thing...
Solar Rachel in Batteries & BMS 2 months ago
@BitsAndBobs that AC/CB interpretation sounds plausible but I'd push back slightly — on several of the Chinese rack units I've pulled apart, "CB" just means there's a resettable breaker...
DontPanic in Batteries & BMS 2 months ago
Nothing screams "professional installation" quite like your garden office switching between grid and inverter while you're on a Teams call pretending the connection is fine.
@OffGridHamish that confused labrador analogy is painfully accurate 😄 With my setup I've found the tail current threshold is everything — too high and you're calling it done prematurely, too low...
NQ_Sparks in Batteries & BMS 2 months ago
@DucatoProject is right to flag the e-Up's charger limitation, but the more frustrating constraint is actually the minimum charge current — most EVSE protocols (including Victron's EV Charging...
@DontPanic25 Which GX device are you using — Cerbo or Venus GX? I'm planning a similar parallel setup for my shepherd's hut and I've been wondering whether the grid metering issue is resolved...
@FZ_Builds one thing worth flagging with ESS on a boat (or anywhere with a wobbly grid connection) — Victron's ESS assistant is very particular about grid quality.
Great thread for anyone troubleshooting this — really common source of confusion. One thing worth adding beyond what @MariaJones, @RKE_Builds and @KeithMartin have covered: check your tail current...