Verdict: the EcoFlow DELTA 3 Plus is one of the most flexible 1 kWh power stations you can buy. It pairs a 1,024 Wh LiFePO4 battery with 1,800 W of output, a UPS switchover under 10 ms, up to 1,000 W of solar input and the option to expand to 5 kWh. It’s an excellent first power station for home backup that can grow with you. Its main drawback is weight.
How we reviewed it: a specification-based review using EcoFlow’s official product page and our transparent runtime math. We have not tested this unit hands-on yet; we’ll update this review when we do. See How We Test.
Pros and cons
| Pros | Cons |
|---|---|
| Expandable from 1 kWh up to 5 kWh | 27.6 lb, heavier than some rivals |
| UPS switchover under 10 ms | 1,800 W output, lower than the Anker SOLIX C1000 Gen 2’s 2,000 W |
| Up to 1,000 W of solar input | Extra batteries add to the total cost |
| Full recharge from the wall in 56 minutes | |
| Six AC outlets and 5-year warranty |
Key specifications
| Capacity | 1,024 Wh, LiFePO4, 4,000 cycles to 80% |
| AC output | 6 outlets, 1,800 W total (2,200 W with X-Boost, 3,600 W surge) |
| USB | 2 × USB-C (140 W max), 2 × USB-A fast charge |
| 12 V output | 1 car outlet (126 W max) |
| AC charging | 1,500 W, 0–100% in 56 minutes |
| Solar charging | 2 ports, 11–60 V, 500 W each (1,000 W total) |
| Car charging | Up to 800 W with EcoFlow’s alternator charger |
| UPS | Under 10 ms |
| Expandability | Up to 5 kWh with compatible extra batteries |
| Weight | 27.6 lb (12.5 kg) |
| Warranty | 5 years |
What it can run, and for how long
| Device | Estimated runtime |
|---|---|
| Average full-size refrigerator (1.5 kWh/day) | ~12 hours |
| CPAP, humidifier off | ~2.7 nights |
| CPAP, humidifier on | ~1.7 nights |
| Wi-Fi router and modem (15 W) | ~35 hours |
| Laptop (50 W) | ~15 hours |
| 1,500 W space heater | ~35 minutes |
Who should buy it
- First-time buyers who want home backup and may need more capacity later.
- CPAP users who want a quiet bedroom unit with fast UPS switching.
- Anyone planning to use solar, thanks to its 1,000 W input.
Who should skip it
- Frequent carriers: the Jackery Explorer 1000 v2 (23.8 lb) or Anker SOLIX C1000 Gen 2 (24.9 lb) are lighter.
- People who need more output in a fixed size: the Anker SOLIX C1000 Gen 2 offers 2,000 W.
- Anyone who needs a full day of fridge backup from day one: consider a 2 kWh model; see our home backup picks.
Alternatives
- Anker SOLIX C1000 Gen 2 vs EcoFlow DELTA 3 Plus: more output and faster recharge, but no expansion.
- EcoFlow vs Jackery: the Jackery Explorer 1000 v2 is lighter with slightly more capacity.
The bottom line
The EcoFlow DELTA 3 Plus is a smart, future-proof choice for home backup: strong specs today and room to grow tomorrow. If weight or maximum output matters more than expandability, look at the Anker SOLIX C1000 Gen 2 instead.
Sources
- EcoFlow, DELTA 3 Plus Portable Power Station (official product page).
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