Mova LumeGret A4000 Battery UK: Specs, Price and How It Fits

Chinese smart-home brand Mova has brought its LumeGret A4000 home battery to the UK, unveiling it at Solar & Storage Live UK 2026 at the NEC in Birmingham. It's the company's first UK residential storage launch, pitched as an AI-managed, expandable battery for households already using — or considering — solar.

What the LumeGret A4000 offers

The A4000 is an LFP (lithium iron phosphate) hybrid battery that starts at 4 kWh and can be expanded in stages up to 20 kWh, letting a household begin small and add capacity later rather than committing to a full-size system up front. It pairs with a 2.5 kW bidirectional inverter and accepts up to 3.6 kW of solar PV input across four MPPTs rated at 2.8 kW combined, so it can charge from panels or from the grid and deliver up to 2.5 kW of AC output, including off-grid.

Mova quotes a 10-year warranty, a 20-year design life, and up to 10,000 charge cycles, with an IP65-rated enclosure — though Mova recommends installing it under cover rather than fully exposed outdoors. Software runs through LumeGret Orbit, an AI energy-management layer that factors in electricity tariffs, weather and generation forecasts, battery state and household consumption patterns to decide when to charge, discharge or hold.

The bidirectional inverter means the A4000 can also run loads directly from the battery during a grid outage, up to its 2.5 kW ceiling — enough to keep essentials like a fridge, router and lighting circuit running, though not a whole-house backup at higher draw. That off-grid capability, combined with the modular capacity steps, is aimed at households who want backup resilience as well as bill savings from a single unit rather than buying separate products for each job.

Part of a wider ecosystem

The A4000 sits in the middle of Mova's growing LumeGret range. The entry-level A2000 launched earlier in 2026 as a smaller plug-in system, while the flagship S4800, shown at Intersolar Europe in June, scales up to 25 kWh of storage with 4.8 kW of PV input and a built-in 6.6 kW EV charger. The A4000 itself integrates with Mova's FluxCharge dynamic EV charging and the portable E7000 (3.6 kW) charger, plus the company's robotic lawn mower range, which can be scheduled to run during peak solar generation.

How it compares to batteries already sold in the UK

At the entry 4 kWh tier, the A4000 undercuts most established home battery storage systems on this list, which tend to start closer to 5 kWh usable — but its real pitch is the expansion path to 20 kWh, which puts the top end close to mid-size systems from Sigenergy's SigenStor and Alpha ESS's Smile range, both also modular and stackable. Typical installed costs for that capacity class run roughly £4,500–£8,500 in the UK depending on brand, inverter pairing and installer, though Mova hasn't confirmed UK pricing for the A4000 itself. As with Hinen's recent A15 launch, Mova is a newer name to UK retail, so installer coverage, spares availability and long-term support here are still unproven next to brands with several years of UK track record.

What's still missing: UK pricing and installer network

Mova's UK launch material and PR Newswire announcement don't include a retail price for the A4000, and no UK installer or distributor network has been named yet. European listings suggest entry pricing for the LumeGret range starts from roughly €1,000 for the smallest configuration, but that figure is European retail, not a UK-confirmed price, and shouldn't be treated as a like-for-like guide to what a fitted UK system will cost. Anyone interested should wait for confirmed UK pricing and MCS-certified installer availability before comparing it against existing options.

Who might it suit?

The step-up expansion model — starting at 4 kWh and growing to 20 kWh — suits households who want to trial battery storage without paying for capacity they don't yet need, particularly if they're also weighing up whether to add a battery now or later. It could also appeal to households with an existing small solar array looking to add storage without a full rewire, given the unit's plug-and-play positioning alongside Mova's other LumeGret products. For sizing a system to actual daily solar surplus rather than total household demand, our guide on home battery installation costs and process is a useful starting point once UK pricing for the A4000 lands.

What to check before buying

Because the A4000 is so new to the UK, anyone considering it should confirm a few things before committing: whether MCS-certified installers are actually stocking and fitting it locally, whether it qualifies for the same 0% VAT relief on installation that applies to other battery storage systems in Great Britain until 31 March 2027, and how Mova's UK warranty support will work in practice if a fault develops years into the 10-year cover period. None of that is unusual for a first-generation product launch, but it's worth treating early adopter pricing and availability claims as provisional until backed by real UK installer quotes, in the same way early figures for other recent Chinese-brand launches have needed revising once UK retail actually started.