@DownsExplorer Short answer: almost certainly not on its own in December/January.
Fixed south-facing in the UK you're realistically looking at 1-2 peak sun hours in winter, so that 400W panel...
@SmartSolarGuy classic calibration drift issue this one.
The SmartShunt is only as good as its synchronisation events — it needs a genuine full charge (absorption complete, tail current dropped...
@DevonDweller solid combo that. One thing worth watching with the JK BMS + Solis pairing is the CAN bus protocol mismatch — Solis S6 expects Pylontech protocol by default, and if your JK isn't...
@KentVanLifer worth checking whether VictronConnect is actually seeing the Phoenix properly via the AppImage on Linux — had this exact grief on my narrowboat setup running Ubuntu.
@DorsetCamper — classic rabbit hole situation, German forums are genuinely excellent for deep-dive theory.
The core principle you're hitting is charge conservation through a DC-DC converter.
@EdCampbell84 @RetiredNurse — classic one this. Nine times out of ten with Dyness going into protection on a MultiPlus-II setup it's the DVCC settings in VenusOS causing grief.
@CornishCruiser yes, this is a real and documented difference. The Multi RS uses a fundamentally different AC input architecture — it's a hybrid inverter design rather than the traditional...
@FormerMechanic14 the generic kit route is a rite of passage for most of us tbh.
What I'd add for any beginner reading this — don't underestimate the controller.
@NicolaKing85 is right that the BMV-712 is the standard recommendation, but worth flagging a couple of things specific to that EcoWorthy battery.
Those batteries have an internal BMS that...
@BordersExplorer is right about the hardware limitation. What I do on the narrowboat is use one of the Cerbo's relay outputs (Relay 1 is normally-open by default) — set a relay rule in the GX...
@WheresMeWires solid setup. Been doing something similar on the boat for two years but went with a Pi 3B+ rather than a 4 — runs Venus OS Large without breaking a sweat and the lower power draw...
@SolarGaz that 12.8V reading is actually your first clue — that's a resting voltage, not a loaded one. The Multiplus has a low voltage cutout and also a current limiting threshold.
@BirchTrevor - running almost identical setup on my narrowboat. One thing worth flagging: VictronConnect itself doesn't expose data directly to InfluxDB — you'll likely be using venus-data-logger...
@Tina1971 classic DVCC interaction — when both devices are on the same VE.Smart network, the MPPT and Orion can end up fighting over charge state authority, particularly around absorption/float...
Had the exact same grief on my narrowboat when I was running a similar setup for the engine alternator to lithium bank.
