Growatt INFINITY 1500 vs EcoFlow DELTA mini
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
EcoFlow DELTA mini costs $500 less. Whether that gap is worth closing depends on what you need to run.
- Growatt INFINITY 1500 holds 71% more energy (1512Wh vs 882Wh), so it runs the same load proportionally longer.
- Growatt INFINITY 1500 has 900W more surge headroom (3000W vs 2100W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA mini is 13.9 lb lighter (23.6 lb vs 37.5 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 mini. 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
A compact NMC unit with a surprisingly strong 1,400W output for its size — but the 800-cycle battery means it won't age like the LiFePO4 field.
Best for: Buyers who want strong output in a light unit and won’t cycle it daily.
Where it falls short:
- NMC — ~800 cycles
- 2-year warranty, 300W solar input
| Spec | Growatt INFINITY 1500 | EcoFlow DELTA mini |
|---|---|---|
| Price | $1099 | $599 |
| Capacity | 1512 Wh | 882 Wh |
| Continuous output | 2000 W | 1400 W |
| Surge output | 3000 W | 2100 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 37.5 lb | 23.6 lb |
| Max solar | 800 W | 300 W |
| Recharge time (faster wins) | 1h 50m | 1h 36m |
Runtime head-to-head
| Appliance | Growatt INFINITY 1500 | EcoFlow DELTA mini |
|---|---|---|
| Refrigerator | 21.4 hrs | 12.5 hrs |
| Mini fridge | 40.8 hrs | 23.8 hrs |
| Chest freezer | 16.1 hrs | 9.4 hrs |
| CPAP machine | 32.1 hrs | 18.7 hrs |
| Sump pump | ❌ | ❌ |