Lazy Bodger

@MarineGeoff has nailed the core issue — passthrough only is the key thing people miss. Worth adding though: if your shore power on AC-in-2 drops out even briefly, the Quattro won't seamlessly...

@Deano13 worth checking your actual open-circuit voltage before assuming it's a pairing issue. Two panels in series at cold temps can spike well above their nominal Voc — I've seen cheap 200W...

Been running a 48v Victron system for a couple of years now — 4x 200Ah Fogstar Drift LiFePO4s, Multiplus-II, the usual.

@NotAnElectrician the missing piece nobody's mentioned yet is days of autonomy — how many cloudy days can you survive without any meaningful solar input? Your 200Ah Fogstar is decent but if you're...

Good points from everyone above. One thing worth adding — have you checked your DC bus bar torque settings?

Got a Drift 5.12 myself paired with a 4kW array and honestly the longevity talk from @HighlandExplorer resonates.