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Most 1kWh power stations force a trade-off: fast charging, high output, or quiet operation, pick two. The EcoFlow DELTA 3 Plus tries to offer all three, with a 56-minute full charge, 1,800W of AC output, and a noise level EcoFlow rates at 30dB under a 600W load. For home office and apartment backup, that combination is hard to ignore.
Key Specifications
- Capacity: 1,024Wh, expandable up to 5kWh with EcoFlow extra batteries
- AC Output: 1,800W total, surge 3,600W, 6 AC outlets, 13 output ports in total
- Battery: LiFePO4 (LFP), rated 4,000 cycles to 80% capacity
- AC Charging: 1,500W input, 0 to 100% in 56 minutes
- Solar Input: 1,000W total across two 500W MPPT inputs
- USB: 2 USB-C ports at 140W max, 2 USB-A ports at 36W max
- UPS: Less than 10ms switchover
- Weight: 27.6 lbs
- Operating temperatures: Charging 0 to 45C, discharging -10 to 45C
- Warranty: 5 years
- Price: Seen at US$699 at REI, checked October 18, 2026. Prices move daily, so confirm before you buy.
What Stands Out
The charging speed is the headline. A 1,024Wh station that refills in 56 minutes on AC power changes how you prepare for an outage. When a storm warning lands, you do not need a half day of planning, you need about an hour. Solar is unusually strong for this size class too, with two separate 500W inputs for 1,000W total, so a larger balcony or rooftop array is not wasted on a small battery.
Output is equally generous. At 1,800W, the DELTA 3 Plus covers the loads that matter in a typical outage: a refrigerator, a home office setup, lights, a television, and phone charging, rotated sensibly rather than all at maximum at once. Our sizing guide walks through that math in detail. The 140W USB-C ports also matter for modern laptops, which can charge directly over USB-C and skip the AC inverter loss entirely.
Two quieter details round it out. The sub-10ms UPS switchover is fast enough for a desktop computer or network storage drive to ride through a flicker, and the IP65-rated battery pack adds dust and splash protection that most indoor stations do not offer.
Things to Know
At 27.6 lbs, this is luggable room to room and fine in a car, but it is not a light carry up several flights of stairs. Expansion to 5kWh is a real advantage, yet each extra battery adds cost and weight, so buy the capacity you actually need first. As we noted in our winter power station guide, it still follows the usual lithium rules: discharge is fine down to -10C, but charge it at 0C or above, indoors.
Who Is It Best For?
Homeowners and renters who want one 1kWh station for home office backup, short outages, and weekend trips, and who value fast recharging over ultra-light weight. If you compared it with the models in our Jackery 1000 V2 vs EcoFlow DELTA 2 comparison, the DELTA 3 Plus is the newer, faster-charging step up in the same size class.
Verdict
The EcoFlow DELTA 3 Plus is one of the most complete 1kWh stations on paper right now: fast AC and solar charging, strong output, long-life LFP cells, and genuine UPS speed. For most home backup shoppers in the US and Canada, it belongs at the top of the shortlist.
