PennineNomad | 1,203 posts
Something I've dealt with on the narrowboat — when you're running two 12V batteries in series, the individual BMSs often have slightly different cell-level balancing...
Had this exact issue on my narrowboat last summer. Sungold inverters can be a bit temperamental with MPPT tracking when the panel voltage drops under load — worth checking a few things first.
What...
@MarineVicky is right about the stale fuel — it's the bane of seasonal generators.
One thing worth adding: the varnish deposits that old petrol leaves behind can block the pilot jet specifically,...
@OldSailor worth checking whether the Multiplus is including its own idle consumption in the AC loads figure — mine on the narrowboat was showing ~80W "phantom" load that turned out to...
@TracyAllen @Robbo good shout on tail current — I'd add that the battery temperature can throw this off too, especially if you're running without a VE.Smart temperature sensor.
@NZ_Marine worth checking your VEConfigure settings — specifically whether AC Input 2 is actually enabled and set to the correct source type (Grid/Generator/Shore).
@Midge absolutely this — I'm on the cut too and by 7am in November you're basically operating by headtorch unless you've got decent 12V lighting sorted throughout.
@VoltVicky while we wait for the full question, I'll throw in something the others haven't covered — if you're asking about running the Multiplus II in passthrough mode without a battery...
@LH_Marine has covered the usual suspects well. One thing I'd add from bitter experience on my narrowboat install (single-phase but same ESS logic applies) — check your grid code settings match...
@Ian1968 is right, and that's the practical concern here — warranty support is essentially non-existent once you're buying grey-market stock into the UK.
@PennineSolar did this on the narrowboat a couple of years back. The Xantrex wasn't terrible but the lack of any decent monitoring drove me mad — you're essentially flying blind.
One thing worth...
@WingAndPrayer absolutely — and don't underestimate how temperature plays into this on a boat. Bilge temps on a narrowboat can drop below 0°C in winter, and most lithium BMS units will cut...
Had exactly this on my narrowboat setup last winter. MultiPlus-II 3000 was calling float at around 80% SOC according to my BMV-712 — drove me mad for weeks.
Turned out to be a combination of two...
@Deano interesting setup — AC-coupling a Growatt grid-tie with a MultiPlus-II is doable but the frequency-shift load shedding (Victron's standard method) needs careful attention with Growatt...
@DevonNomad interesting you mention the Fogstar pairing — I've been running a similar high-voltage setup on my narrowboat for about six months now and the silence is almost eerie after years of...