EcoFlow DELTA 3 Max vs Growatt INFINITY 1500
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
These two cost the same, so the decision comes down to what you're powering.
- EcoFlow DELTA 3 Max holds 35% more energy (2048Wh vs 1512Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Max has 1800W more surge headroom (4800W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Growatt INFINITY 1500 is 17.6 lb lighter (37.5 lb vs 55.1 lb).
- EcoFlow DELTA 3 Max is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Max
The value leader in the 2kWh class. Same 4800W surge as the DELTA 2 Max at $500 less, with 1000 more cycles.
Best for: Home backup buyers who want compressor-starting surge without paying flagship prices.
Where it falls short:
- 55 lb is a two-hand lift
- Only marginally lighter than heavier rivals
Growatt INFINITY 1500
A capable mid-size that flies under the radar. Solid 2,000W output and fast charging, let down mainly by a shorter warranty than the big brands.
Best for: Value hunters who want 1.5kWh and don't need the longest warranty.
Where it falls short:
- 3,000W surge is modest for the output
- 3-year warranty vs 5 from the majors
| Spec | EcoFlow DELTA 3 Max | Growatt INFINITY 1500 |
|---|---|---|
| Price | $1099 | $1099 |
| Capacity | 2048 Wh | 1512 Wh |
| Continuous output | 2400 W | 2000 W |
| Surge output | 4800 W | 3000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 55.1 lb | 37.5 lb |
| Max solar | 1000 W | 800 W |
| Recharge time (faster wins) | 1h 22m | 1h 50m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Max | Growatt INFINITY 1500 |
|---|---|---|
| Refrigerator | 29.0 hrs | 21.4 hrs |
| Mini fridge | 55.3 hrs | 40.8 hrs |
| Chest freezer | 21.8 hrs | 16.1 hrs |
| CPAP machine | 43.5 hrs | 32.1 hrs |
| Sump pump | 2.2 hrs | ❌ |