EcoFlow DELTA Pro Review
3.6kWh, 3,600W output, expandable to 25kWh — a battery that behaves like a generator.
The verdict
The DELTA Pro is the battery station that crosses into real home-backup territory: 3,600W output starts and runs nearly any household appliance, capacity expands with extra batteries, and it can tie into a transfer switch through EcoFlow's ecosystem. Silent, indoor-safe, solar-chargeable — the strongest single answer to 'can a battery replace my generator?' (Answer: for 1–2 days, yes.)
Typical price: ~$2,699 (typical street price — current price shown on Amazon)
Buy on AmazonWhat we like
- +3,600W continuous (7,200W surge) runs almost anything, including most well pumps
- +3.6kWh base, expandable to 25kWh with extra batteries
- +1,600W max solar input — genuinely fast off-grid recharging
- +Charges 0–80% in under an hour from a wall outlet
- +Silent, no fumes, safe indoors — runs in the living room during a storm
What to know
- −99 lb — wheeled, but stairs are an event
- −Serious money once you add batteries or solar
- −Long outages still favor fuel: 3.6kWh is ~1 day of frugal essential use
Full review
The pitch for battery backup is quality of life: no 2 AM refueling in the rain, no carbon monoxide risk, no noise complaints — the thing sits in your kitchen running the fridge in complete silence. The DELTA Pro delivers that with enough output headroom (3,600W) that you don't have to think about what you plug in.
The strategy that makes it shine is hybrid: run the house's essentials on the battery, and recharge it — from solar panels, a car, or 90 minutes of running a small generator — once a day. That turns a loud 12-hour-a-day generator problem into a quiet 90-minute one, and it's our favorite backup architecture for suburban homes.
Straight up against a $1,000 dual-fuel portable for week-long outage endurance, fuel still wins on capacity per dollar. This isn't cheaper — it's better to live with.
Best for: Homeowners who want silent indoor backup for essentials, especially paired with solar or a small generator.
Specifications
| Capacity | 3,600Wh (LFP, expandable to 25kWh) |
|---|---|
| AC output | 3,600W continuous / 7,200W surge |
| Outlets | 5× AC incl. 30A, USB-C 100W, 12V |
| Solar input | Up to 1,600W |
| Wall charge | 0–80% in ~1 hr |
| Cycle life | 6,500 cycles to 50% / 3,500 to 80% |
| Weight | 99 lb |
| Warranty | 5 years |
Ready to get one?
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~$2,699 typical price
Buy on AmazonHead-to-head comparisons
Alternatives in Battery Power Stations
Premium Pick
EcoFlow DELTA Pro 3
4kWh, 4,000W, and 120/240V from a single unit — the first battery that fully replaces a generator for most homes.
Jackery HomePower 3600 Plus
3.6kWh and 3,600W in the lightest big battery made — Jackery's home-backup flagship.
Editor's Choice
Jackery Explorer 2000 Plus
2kWh expandable to 12kWh, 3,000W output, from the brand that made the category friendly.