BLUETTI Elite 400 review
BLUETTI Elite 400 Portable Power Station
By Tom Calder
BLUETTI's biggest single box: 3,840Wh and 2,600W with 5,200W of surge, on wheels with a telescopic handle, which matters at 39kg. Mains and solar together take it to 80% in 60 to 88 minutes, depending on whether you go by BLUETTI's page or its manual. Against the Elite 300 it holds 27% more but is rated for half the cycles (3,000+ against 6,000+), so for a battery you'll cycle often, the Elite 300 is the longer-lived choice. Its £1,799 on 10 October 2026 was a sale price (from £1,899) due to end on 14 October.
- Best for
- The most energy in one wheel-along box
- Skip it if
- You'll cycle it daily, say with solar
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Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- 3,840Wh: the most in one box here
- Wheels and a telescopic handle
- 5,200W surge
Worth knowing
- 39kg
- 3,000-cycle rating, half the Elite 300's
- No add-on batteries
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Our review
The Elite 400 puts 3,840Wh, nearly four units of electricity, in a single case on wheels. That capacity is its whole argument: no other BLUETTI unit on our site holds as much in one case. The catch is a 3,000-cycle battery rating, half that of its smaller sibling, so it suits a household that wants long cover in rare power cuts rather than a battery to cycle every day with solar.
What the numbers mean
By the site's planning method (90% depth of discharge, 85% inverter efficiency, 10W of self-consumption) roughly 2,940Wh of the 3,840Wh reaches your appliances. The two UK sockets share 2,600W, enough for any single plug-in appliance, with a 5,200W surge for motor start-ups. Power Lifting raises the ceiling to 3,900W for purely resistive loads such as kettles and electric blankets; BLUETTI's manual is clear that real output stays at 2,600W, so such loads run below their rated power. BLUETTI's manual puts the unit's own consumption at about 15W.
In a UK power cut
Our runtime method over the appliance-draw dataset gives a fridge-freezer 2 to 5 days, a router 5 to 6 days, a CPAP on blower alone 4 to 8 days (35 to 95 hours with a heated humidifier), a laptop 37 to 73 hours, a television 13 to 68 hours and a gas combi boiler's pump and controls 22 to 65 hours. Fridge-freezer, router, four LED bulbs and a charging phone together run 17 to 53 hours; add the combi boiler and it is 10 to 32 hours. Boilers are hard-wired, so that needs an electrician's changeover first. A home oxygen concentrator at 275 to 325W gets 9 to 10 hours; see running medical equipment in a power cut. At the 15W BLUETTI quotes for the unit itself rather than our 10W, the fridge-freezer drops to 45 to 109 hours and the router to 4 to 5 days.
A 2.2kW kettle runs normally at about 37Wh a minute. A 3kW kettle is over the 2,600W rating and needs Power Lifting, which holds it to 2,600W, about 43Wh a minute or 1.5% of the usable battery, so it boils more slowly.
How it compares
The BLUETTI Elite 300 gives up 826Wh (3,014.4Wh), is rated for twice the cycles, weighs 26.3kg instead of 39kg, switches in 10ms rather than 15ms and adds a 140W USB-C and a 12V 30A port. The EcoFlow DELTA Pro 3 is the other wheeled giant: 4,096Wh and 4,000W, 51.5kg, 4,000 cycles, expandable to 12kWh. The BLUETTI Apex 300 is 2,764.8Wh and 3,840W at 38kg and takes add-on packs. See BLUETTI power stations.
Living with it
The UK AC input is 2,300W. BLUETTI's page claims 80% in 60 minutes only with 1,000W of solar added (3,300W in all) and gives 1.8 hours from the mains alone; the manual's Turbo table says 80% in 1 hour 28 minutes. Standard mode (1,200W, kinder to the cells) takes 3 hours 35 minutes and Silent mode at 1,000W 3 hours 52 minutes. Charging from empty costs about £1.01 per full charge at Ofgem's October to December 2026 cap rate of 26.32p per kWh, before losses. It is 427 by 286 by 490mm, with a telescopic handle BLUETTI says is for transport only; its handling table recommends three people for anything between 32 and 55kg. Ports are two 100W USB-C, two USB-A and a 120W car socket. Wi-Fi and Bluetooth, a five-year warranty on BLUETTI's page, and 30-day returns from BLUETTI UK on unused units.
Safety
It is IP20 and not for rain. The manual says to charge it in a well-ventilated area, allows charging between 0°C and 40°C and discharging from -20°C to 40°C, and for storage gives -20°C to 45°C, or 10°C to 30°C if it will sit for over a month, with a full cycle every three months. It specifies a dry powder extinguisher and notes the USB-C and car ports are classed PS3 under IEC 62368-1, recommending protective measures such as a fire enclosure for anything connected to them. Household practice is in our lithium battery fire safety guide.
Our verdict
Buy the Elite 400 if you want the longest cover you can get from one case, cuts in your area are rare but long, and you have a ground-floor home for it. Our power cut tracker shows how your area has fared. Do not buy it for daily solar cycling or for anything you will lift regularly; the Elite 300 outlasts it on paper and two people can move it. And if you only need the fridge and router through an evening, a 1kWh unit is plenty.
A researched review, built from the maker's specs, manual and UK listings; facts checked 21 Oct 2026. Sources: BLUETTI UK — Elite 400 Portable Power Station product page; BLUETTI — Elite 400 user manual V2.0 (specifications, charging modes, Power Lifting, storage); BLUETTI UK — return and refund policy (30 days); Ofgem — energy price cap unit rates and standing charges (1 October to 31 December 2026).
Who shouldn't buy this
Don't buy it if you'll cycle it daily, say with solar: the Elite 300's 6,000-cycle battery should last longer.
Key specs
| Capacity | 3,840 Wh |
| Output | 2,600 W |
| Weight | 39 kg |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for A whole household through a day-long power cut — fridge-freezer, boiler controls, router, lights and phones — in a fixed-capacity unit built to last.
Best for Whole-home backup during power cuts, and off-grid trips
as of 21 Oct 2026, 10:37 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Best for Several days of whole-home essentials and heavy kitchen appliances at once, if you can handle a wheeled 51.5kg unit.
Questions
Can the BLUETTI Elite 400 run a fridge-freezer?
Yes. A fridge-freezer averaging 12 to 51W runs for 2 to 5 days on the 3,840Wh battery by the site's runtime method, and the 5,200W surge covers the compressor start.
How long does the Elite 400 take to charge?
BLUETTI's manual gives 80% in 1 hour 28 minutes in Turbo mode at 2,300W from the mains, 3 hours 35 minutes in Standard mode and 3 hours 52 minutes in Silent mode. Its product page says 1.8 hours to 80% from the mains alone.
Can the Elite 400 run a kettle?
A 2.2kW kettle runs normally. A 3kW kettle exceeds the 2,600W rating and needs Power Lifting mode, which handles resistive loads up to 3,900W but still delivers only 2,600W, so the kettle boils more slowly at about 43Wh a minute.
Can I add an extra battery to the Elite 400?
No. BLUETTI lists no expansion battery for the Elite 400. If you expect to want more than 3,840Wh later, the Apex 300 or the EcoFlow DELTA Pro 3 are the expandable routes.
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