Growatt INFINITY 1500 vs EcoFlow DELTA Max 2000
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 Max 2000 holds 33% more energy (2016Wh vs 1512Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Max 2000 has 400W more surge headroom (3400W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Growatt INFINITY 1500 is 10.5 lb lighter (37.5 lb vs 48 lb).
- Growatt INFINITY 1500 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Growatt INFINITY 1500 is rated for 3,000 cycles vs 800 — meaningful if you cycle it daily.
If you plan to cycle the battery daily, think twice about the EcoFlow DELTA Max 2000. Its NMC cells are rated for 800 cycles against the LiFePO4 rival's longer life — over years of regular use that's the more expensive unit, whatever the sticker says.
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
The previous-generation 2kWh EcoFlow. Still capable and expandable, but its NMC cells and 800-cycle rating are a real step below the LiFePO4 DELTA 3 that replaced it.
Best for: Only at a steep discount against the DELTA 3 Max.
Where it falls short:
- NMC — roughly 800 cycles vs 4,000 for the DELTA 3 Max
- 2-year warranty
| Spec | Growatt INFINITY 1500 | EcoFlow DELTA Max 2000 |
|---|---|---|
| Price | $1099 | $1099 |
| Capacity | 1512 Wh | 2016 Wh |
| Continuous output | 2000 W | 2400 W |
| Surge output | 3000 W | 3400 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 37.5 lb | 48 lb |
| Max solar | 800 W | 800 W |
| Recharge time (faster wins) | 1h 50m | 1h 48m |
Runtime head-to-head
| Appliance | Growatt INFINITY 1500 | EcoFlow DELTA Max 2000 |
|---|---|---|
| Refrigerator | 21.4 hrs | 28.6 hrs |
| Mini fridge | 40.8 hrs | 54.4 hrs |
| Chest freezer | 16.1 hrs | 21.4 hrs |
| CPAP machine | 32.1 hrs | 42.8 hrs |
| Sump pump | ❌ | 2.1 hrs |