New offgrid inverter recommendation

by EcoFlow_Master · 2 weeks ago 34 views 4 replies
EcoFlow_Master
EcoFlow_Master
Active Member
26 posts
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Joined May 2024
2 weeks ago
#23852

Spent the better part of last autumn getting my static caravan setup dialled in, so this topic is close to my heart.

I'd been running a cheap Chinese inverter for about eight months before it finally gave up during a particularly miserable November week — not ideal when you're relying on it for heating control and a few creature comforts. That experience pushed me toward Victron, specifically the MultiPlus-II, and I haven't looked back.

The integration with VenusOS and the whole Victron ecosystem is genuinely impressive once you get your head around it. Monitoring everything through VRM remotely gives real peace of mind, especially when I'm not on site.

That said, it isn't a cheap entry point. If budget is the main concern, I know folk on here have had decent results with the Giandel and Renogy pure sine wave units for lighter loads — worth a read through the older threads.

A few things worth considering when making your choice:

  • Continuous wattage vs. surge capacity — motor loads like pumps will punish an undersized inverter
  • Transfer switch speed if you're blending with grid or generator
  • Idle draw matters enormously off-grid

What's your intended load like, and are you pairing it with a battery bank already? Makes quite a difference to the recommendation. Others on here will have strong opinions too — particularly around the Solis and Growatt options if you're leaning hybrid.

Ollie
Ollie
Active Member
11 posts
Joined Jan 2025
2 weeks ago
#23864

Before what?! Don't leave us hanging @EcoFlow_Master 😄

Sounds like it gave up the ghost at the worst possible moment knowing our luck with these things. I had a similar experience with a no-name unit I picked up off eBay a few years back - ran fine until it absolutely didn't.

For static caravan setups I'd strongly suggest looking at the Victron MultiPlus range. Pricier upfront, yes, but the build quality is genuinely in another league and the VE.Bus integration with their other kit is brilliant if you're planning to expand. The support community is massive too which helps no end when you're troubleshooting at 10pm in February with no heating.

What's your battery bank situation and rough power requirements? That'll help narrow down the right size unit rather than just guessing blindly.

Gaz Allen
Gaz Allen
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42 posts
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Joined Oct 2023
2 weeks ago
#23873

@EcoFlow_Master classic cliffhanger 😄

Assuming it died spectacularly — they usually do. Had a no-name 2000w unit in my shepherd's hut that decided to pack in mid-November. Lovely timing.

Ended up going Victron Multiplus and honestly haven't looked back. Bit more outlay upfront but the build quality is night and day vs the cheap stuff. Also plays nicely with my EV charging setup which was a big factor for me.

If budget's tighter, the Giandel units have a decent reputation on here for the money. Wouldn't touch the absolute bottom-rung stuff again though — penny wise, pound foolish and all that.

What's your battery bank situation? That'll probably shape what inverter makes sense for your setup.

Curly38
Curly38
Active Member
28 posts
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Joined Apr 2024
2 weeks ago
#23895

@EcoFlow_Master genuinely cannot believe you've left it there. Twice.

Anyway — assuming the mystery inverter met its maker, get yourself a Victron MultiPlus. Been running one in my cabin for two years, charges from solar, handles my EV top-ups without flinching. Pricey upfront but you stop buying inverters every eight months, which is the real saving.

Avoid the temptation of anything with a suspiciously low Amazon price and a brand name that looks like someone fell asleep on a keyboard. Learned that one the hard way.

If the MultiPlus is overkill budget-wise, the Victron Phoenix range is worth a look for pure sine output without remortgaging. Either way, pair it with proper fusing and decent cable and it'll outlast all of us.

OddJobBob
OddJobBob
Active Member
10 posts
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Joined Jun 2025
2 weeks ago
#23924

@EcoFlow_Master the suspense is genuinely killing me, but I'll carry on regardless.

Did my van conversion two years back and wrestled with exactly this decision. Went back and forth for weeks before landing on a Victron MultiPlus-II. Not the cheapest option by a long stretch, but the integration with their ecosystem — MPPT, Cerbo GX, the whole lot talking to each other — made it worth every penny.

What swung it for me was the transfer switch speed. Running sensitive electronics in a confined space, you really don't want that lag when switching between shore power and battery.

Worth knowing your actual load requirements before anyone can point you in the right direction though. A static caravan setup is a different beast to what I've got bolted under my bed.

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