EcoFlow · power station
EcoFlow DELTA 3
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Keeps a fridge-freezer, router, two lamps and phones going for about 12 hours in a power cut. Runs a microwave or a hairdryer, but not a full-power kettle. Switches over in 10 ms or less when the mains fails. Battery cost over its rated life works out at about 16p per kWh.
Spec score 8.7/10 in mid-size (500-1,500 ) · how we score
From £649 In stock
Check price at EcoFlow UK- ✗ Kettle (3 kW)
- ✓ Microwave
- ✓ Fridge-freezer
- ✓ CPAP
Typical appliance figures; check your own appliances.
Why it's worth a look
- Keeps a fridge-freezer, router, two lamps and phones going for about 12 hours in a power cut.
- Takes over in 10 ms when the mains drops: fast enough for computers and most CPAP machines.
- battery rated for 4,000 cycles: over 76 years of weekly use.
- Takes up to 500 W of solar, so it can refill in a long cut or off-grid.
- Expandable to 5,000 Wh with extra batteries.
- 5-year warranty.
Watch out for
- Can't boil a 3 kW kettle (1,800 W output).
Reliability signals
- Warranty: 5 years (maker's UK page)
- Battery: LFP, 4,000 cycles to 80% capacity
- Repairs: through the maker's UK support; we list known issues only from named reviews, and none are recorded yet
Owned one? Tell other buyers how it has held up.
Where it ranks in our lists
Specifications
| Capacity | 1,024 Wh |
|---|---|
| Continuous output | 1,800 W |
| Surge / peak | 3,600 W |
| 3-pin sockets | 4 |
| Battery type | LFP |
| Rated cycles | 4,000 (to 80%) |
| Weight | 12.5 kg |
| Mains charge to full | 56 min |
| Max solar input | 500 W |
| UPS switch-over | 10 ms |
| Expandable to | 5,000 Wh |
| Fastest USB-C | not published |
| Warranty | 5 years |
| App | EcoFlow app |
| Noise (maker's figure) | not published |
Sources (1)
- EcoFlow UK (official store): product page and specifications, checked 22 Oct 2026
Where to buy
| Seller | Price | |
|---|---|---|
| EcoFlow UK (official store) | £649 | Check price |
Also sold as (4 bundles and options)
| Seller's version | Price | Stock |
|---|---|---|
| DELTA 3 / DELTA 3 Smart Extra Battery | £1,078 | In stock |
| DELTA 3 / 220W Portable Solar Panel | £998 | In stock |
| DELTA 3 / Alternator Charger Plus 1000 | £978 | Sold out |
| DELTA 3 / Alternator Charger 600 | £898 | In stock |
Price from the seller's own UK page. Prices change; the seller's page is always right.
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More: all portable power stations · EcoFlow · owner reports