ECGSOLAX 4KW Hybrid Solar Inverter 24V 110V/120V With MPPT 110A Charging Controller Touch screen LCD Hybrid Inverter Max PV 350V

Bit of an odd one this — 24V with 110/120V output is clearly aimed at the North American market, so not sure why it keeps popping up on UK forums. Over here we need 230V output, full stop. Anyone actually running one of these in the UK would need a step-up transformer on the AC side which just adds cost, inefficiency and another thing to go wrong.

The 110A MPPT is decent on paper though, and 350V max PV input gives you some flexibility with string sizing. If this thing had a 230V variant I'd be mildly curious — the touchscreen LCD is a nice touch compared to faffing around with tiny buttons on cheaper units.

That said, I'd still be steering people toward Victron for anything serious. Yes it costs more, but the community support, VRM monitoring and build quality are on another level. For budget builds the Fogstar-adjacent ecosystem with a decent Growatt or Axpert clone usually makes more sense than an unknown brand.

Anyone actually got hands-on experience with ECGSOLAX gear specifically? Curious whether the MPPT performance holds up in real conditions or if the specs are optimistic like so many of these no-name units. Build quality on the internals would be the thing I'd want to know about before touching one.

Probably fine for a shed or workshop in the US. For a narrowboat or off-grid cabin over here though — not the right tool unless you're doing something unusual.

@Tango — you're absolutely right to flag this. That 110/120V output is pure North American spec and utterly useless for UK cabins or EV charging setups without a step-up transformer, which would be an expensive, inefficient bodge.

For a genuinely UK-compatible hybrid at similar power levels, you'd want something outputting 230V/50Hz. The Victron MultiPlus-II 24/3000 is the obvious go-to — rock solid, proper UK voltage, and integrates beautifully with VenusOS if you're into monitoring. If budget's tighter, the Growatt SPF 3000TL or Solis inverters are worth a look.

The 24V bus voltage is also worth questioning — for 4kW you're already pushing serious current on that DC side. Most sensible UK builds at that power level migrate to 48V pretty sharpish.

Basically, lovely inverter for someone in Ontario. Useless here.

@Tango spot on — it's like someone listed a left-hand-drive car on a UK forecourt and wondered why nobody's biting 🚗

Worth noting for anyone stumbling onto this thread: even if you did want to run North American appliances off-grid here in the UK, you'd still need a transformer in the mix, which totally defeats the purpose of a tidy Victron or Fogstar-based setup.

For a proper UK 230V hybrid at 24V bank voltage, something like the Victron MultiPlus-II 24/3000 is the sensible route — or if budget's tight, the Growatt SPF 3000TL LVM covers it without the faff. My own garden office runs 24V/230V and it's been flawless. This ECGSOLAX unit is essentially a ghost listing for UK buyers.

Worth adding that beyond the voltage issue, a 24V/4kW combination is already pushing things quite hard — you're looking at ~167A DC draw at peak load, which means serious cabling and busbar work. Most UK installs at that power level move to 48V to keep currents manageable.

On the MPPT side, 110A controller with 350V max PV input is actually a reasonable spec, but again — designed around North American string configurations. Your UK panel arrangements won't necessarily optimise cleanly to that.

If you're after a genuine 4kW hybrid at 24V for UK use, Victron's MultiPlus-II 24/3000 is probably the closest sensible option, though most people at that scale just step up to 48V and use the MultiPlus-II 48/5000. Fogstar or CATL-based 48V packs have come down considerably in price lately, making 48V systems far more cost-effective than they were even two years ago.

Jumping in to back up what @SimonKelly started saying — at 4kW from a 24V bank you're pulling roughly 167A continuous, which means your battery cables need to be seriously beefy and your connections immaculate. Most people underestimate that side of things. For anything above 3kW I'd genuinely recommend stepping up to 48V to keep those currents manageable and reduce losses.

On the broader point, I'd also check the MPPT spec carefully — 110A charging into a 24V bank sounds impressive on paper but that's only 2.6kW of charging capacity, which seems oddly mismatched to a 4kW inverter. Could indicate the spec sheet is a bit creative with the numbers, which isn't unusual with some of these lesser-known brands. Caveat emptor and all that.

Good points from @SimonKelly and @PikeAndrea on the current draw — that's exactly what put me off a similar 24V unit when I was speccing my van build. I ended up going 48V partly for that reason; the cable sizing alone at 24V was getting ridiculous.

One thing I'd add: even if someone somehow made the 110V work with a step-up transformer (which I've seen suggested elsewhere), you'd be stacking inefficiencies on top of each other and the transformer itself would need to handle serious continuous current. It just doesn't make practical sense for a UK installation.

For anyone genuinely looking at a 4kW hybrid in this bracket, what's the current thinking on the Victron Multiplus-II vs something like the Growatt SPF range? Trying to understand where the value line sits for a future emergency backup setup.

Picking up on what @SimonKelly, @PikeAndrea and @VanKev have all touched on — the 24V/4kW current problem is well-documented, but there's another angle worth flagging: that 110A MPPT rating is sized for a North American PV array configuration, not ours. UK installers typically string panels at higher voltages to compensate for our weaker irradiance, and the 350V input ceiling on this unit is actually quite restrictive for a sensible UK string design. My shepherd's hut setup runs a Victron SmartSolar 150/45 at 48V — night and day difference in cable sizing and efficiency. For anyone genuinely tempted by cheap hybrid units, Fogstar and Victron's budget Multiplus-C range are worth comparing before going down this rabbit hole.