EcoFlow
EcoFlow DELTA Pro 3
Best for: whole-home backup — refrigerators, sump pumps, and multi-day outage coverage.
Tip: add it to your Amazon cart while you decide — it stays saved there, with no obligation to buy.
Official video
See it in action
From the official EcoFlow channel — the maker's own walkthrough.
Video: Everything You Need To Know About EcoFlow DELTA Pro 3 | All Features Explained — official EcoFlow channel on YouTube. We embed, they host.
Score breakdown
Where the 7.8 comes from
Each bar is this model's min-max normalized position across all 13 units we track — the lime bar is the normalized score, the number on the right is the official spec.
Official spec sheet
Every number, cited
| 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 | View spec source ↗ |
Strengths in the data
- 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)
Flaws but not dealbreakers
- Bottom-4 for portability (113.5 lbs)
Both lists are derived mechanically: a metric makes the list when this model finishes in the top or bottom four of the 13 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.
Tip: add it to your Amazon cart while you decide — it stays saved there, with no obligation to buy.
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 13 models ↗