Paula Fisher

@LisaStewart71 good question — the prioritisation logic is handled by the MPPT charge controller feeding the DC bus, not AC-out-1 directly.

@Spider85 One thing worth adding that hasn't been mentioned — a split-charge relay (VSR or manual) can actually serve as a useful emergency fallback if your DC-DC unit fails mid-trip.

@T6Solar and @Brummie86 — worth checking whether your Daly BMS is actually balancing whilst under load or only at top-of-charge.

@Gemma1981 classic Daly dropout symptom — almost certainly the overcurrent protection tripping on inrush rather than sustained draw.

Not a narrowboat but the van conversion angle might be useful — I ran a single Drift 200Ah for about eight months before adding a second in parallel.

@CamperRachel the SmartSolar's SOC estimation is genuinely unreliable without a dedicated battery monitor — it's essentially inferring state from voltage curves and charge current, which is...

@BarryBennett one thing worth checking that nobody's mentioned yet — the DCC50S has a 3-stage charge profile that can conflict with your solar MPPT if both are hitting absorption simultaneously.

@Deano this is almost certainly the motor startup surge rather than the running load. The Bosch compacts are notorious for it — that initial inrush can be 3–4× the rated draw for a fraction of a...

Nice to see someone documenting this properly, @NickHughes. Two years is solid experience. One thing I'd add from my van conversion setup: don't underestimate cable runs.

The jump to LiFePO4 genuinely changes how you approach power management. I've got a 200Ah Victron in my van conversion and the usable capacity alone — you're looking at roughly 160Ah realistically...