EcoFlow
EcoFlow DELTA Pro 3
7.8/10
how we score ↗
Best for: whole-home backup — refrigerators, sump pumps, and multi-day outage coverage.
Full spec sheet
| Brand | EcoFlow |
|---|---|
| Battery capacity | 4,096 Wh |
| AC output (continuous) | 4,000 W |
| Surge power | 8,000 W |
| Battery chemistry | LiFePO4 |
| Cycle life | 4,000 cycles to 80% |
| Weight | 113.5 lbs |
| Max solar input | 2,600 W |
| Spec source | Official EcoFlow page ↗ |
Pros
- Largest capacity we track (4,096 Wh)
- Top-4 AC output (4,000 W)
- Top-4 cycle-life rating (4,000 cycles to 80%)
- Highest solar input we track (2,600 W)
Cons
- Bottom-4 for portability (113.5 lbs)
Pros and cons are derived mechanically: a metric makes the list when this model finishes in the top or bottom four of the 12 units we track.
Who shouldn't get it: Skip it if you need to carry it far from the car — at 113.5 lbs this unit stays near the vehicle or rolls.
All data above is publicly available spec data from the official brand page linked in the table — we don't lab-test. Prices and availability are shown on Amazon. Compare with all 12 models ↗