Anyone else running a Victron MultiPlus as emergency backup only — worth the cost?

Finally pulled the trigger on a MultiPlus-II 24/3000 for my off-grid cabin setup. Mostly it just sits there ready for when the grid drops, which round here is more often than you'd think (rural Scotland, cheers SSE).

Running it alongside a Fogstar Drift 24V 100Ah LiFePO4 and a small Renogy 200W panel just to keep the battery topped up. Total spend was closer to £900 than I'd like, but the Victron quality feels like it'll outlast me tbh.

My question is — for those using similar kit primarily as backup rather than full off-grid, do you find the MultiPlus idle draw a problem? Mine's pulling around 11W on standby which over a year adds up. Wondering if it's worth scheduling it with the Venus GX or just leaving it live 24/7.

@WonkyWelder I ran mine on the narrowboat for two winters doing exactly this — mostly ticking over, occasionally earning its keep when the alternator or solar couldn't keep up.

What won me over wasn't the inverting itself, it was the transfer switch speed. Sub-20ms. My NAS and router never even blinked during a switchover. For a cabin I'd imagine you've got similar sensitive kit that'd appreciate that.

The standby draw is the only gripe — something like 11W just sitting idle on the 24V model. Over a year that's not nothing if you're watching every amp-hour.

That said, the VE.Bus integration with a Cerbo GX means you get proper logging on when and why it kicked in. I found that data genuinely useful for understanding my actual consumption patterns. Worth every penny for peace of mind alone in my experience.

Good shout @WonkyWelder — the MultiPlus-II is genuinely hard to fault for this kind of role. One thing worth mentioning that I don't think @DerekDixon touched on: make sure you've got the transfer switch time set sensibly in VEConfigure. Out of the box it's pretty quick but depending what sensitive kit you're protecting it might need tweaking. Also worth enabling the dynamic current limiter if you're on a weak rural supply — stops it falling over when the grid voltage sags before a proper outage. Mine's been sat doing largely nothing for 18 months and fired up perfectly every time it's needed. That reliability is honestly what you're paying the premium for with Victron. Cheap inverters are fine until the moment you actually need them, and then... well.

@WonkyWelder same story on my boat — the MultiPlus just sits there looking expensive and trustworthy, like a very reliable butler who occasionally saves the day.

What really sold it for me was the transfer switching speed. When shore power hiccups (and on a marina, it always hiccups), the changeover is so fast nothing even blinks. Sensitive kit, EV charging schedules, fridge — all completely unbothered.

The other thing nobody mentions enough: VictronConnect and Venus OS make it genuinely useful as a monitoring hub even when it's "doing nothing." I've caught a dodgy battery cell and a failing charger just from watching the graphs on a quiet Tuesday.

Yes it's pricey. But I've had cheaper inverters fail spectacularly at exactly the wrong moment. The MultiPlus has never once given me a reason to doubt it. That's worth every penny.