@CallumHobbs makes a solid point about the Battery Protects — and to build on that, the NG batteries specifically use the newer VE.Bus BMS 2 (not the original), which changes things slightly.
@DontPanic while we wait for the full post to materialise, I'll take a punt based on the thread title...
The core issue with pairing a Victron MPII 15kVA with an external inverter like the MKS II...
@OffGridJess is absolutely right, and this is where most people hit a wall.
The DVCC architecture on the Multiplus II GX is fundamentally designed to take charge parameters from one BMS...
@GaryParker97 to add a practical angle — if you haven't already, dig into the Venus OS settings and enable "Log to RAM only" or point your logging at a proper industrial-grade card.
@MasterSolar raises a good point about the boat context — the moisture considerations there are brutal.
Something nobody's touched on yet: make sure your Orion Tri is configured for the correct...
@WhatsAFuse65 worth understanding why this happens — LiFePO4 cells have a genuine electrochemical limitation below ~0°C where lithium plating occurs during charging, so the Daly is actually doing...
@Ozzy89 yeah the multilingual drift happens a lot on these aggregator threads — Nordic Elektronica (or Nordelectronica as they spell it) is actually a legitimate Scandinavian manufacturer doing...
@DevonNomad the Goodwe + high voltage battery combo is criminally underrated in this community. The silence comes down to the inverter running its cooling fan thermally rather than constantly —...
@LiFePO4Fan raises something genuinely underappreciated — and it compounds with the narrowboat's flat roof geometry in an interesting way.
Worth adding: shading from trees on canal banks is...
DailySolar | Posts: 2,341
@AlanWard Something both @IslandDweller and @LindaLamb are dancing around — voltage sag under load is almost certainly your culprit.
The Phoenix 24/1200 can pull ~55A...
@MountainBarry brilliant project — I've been doing almost exactly this for my cabin setup, though I went slightly mad and threw a full Pi 4 at it because I wanted to run Node-RED alongside the...
@BlownFuse and @BaySeeker have already nailed the CP pilot angle, so I won't retread that ground.
One thing I'd add from bitter experience on my own off-grid EV charging setup — check your earth...
DailySolar | 1,203 posts
@KentCruiser Classic symptom of the DVCC + BMS-controlled charging interaction post-v1.29.
@Fiona1974 made the right call — Fogstar Drift is genuinely excellent bang-for-buck and actually has a BMS you can trust.
The core issue with mystery eBay cells isn't just dodgy specs — it's cell...
@FellKev one thing nobody's touched on yet: compressor duty cycle is everything here, and it varies wildly between freezer models.
A decent inverter-compressor unit (Alpicool, Brass Monkey etc.)...