Growatt INFINITY 1500 vs EcoFlow DELTA 1300
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 1300 costs $100 less. Whether that gap is worth closing depends on what you need to run.
- Growatt INFINITY 1500 holds 20% more energy (1512Wh vs 1260Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 1300 has 300W more surge headroom (3300W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 1300 is 6.6 lb lighter (30.9 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 1300. 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 original DELTA that put EcoFlow on the map. Fast-charging and high-surge for its day, but the NMC battery and lack of USB-C now show its age.
Best for: Bargain hunters who find it heavily discounted.
Where it falls short:
- NMC — ~800 cycles
- No USB-C PD
- 2-year warranty
| Spec | Growatt INFINITY 1500 | EcoFlow DELTA 1300 |
|---|---|---|
| Price | $1099 | $999 |
| Capacity | 1512 Wh | 1260 Wh |
| Continuous output | 2000 W | 1800 W |
| Surge output | 3000 W | 3300 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 37.5 lb | 30.9 lb |
| Max solar | 800 W | 400 W |
| Recharge time (faster wins) | 1h 50m | 1h 36m |
Runtime head-to-head
| Appliance | Growatt INFINITY 1500 | EcoFlow DELTA 1300 |
|---|---|---|
| Refrigerator | 21.4 hrs | 17.9 hrs |
| Mini fridge | 40.8 hrs | 34.0 hrs |
| Chest freezer | 16.1 hrs | 13.4 hrs |
| CPAP machine | 32.1 hrs | 26.8 hrs |
| Sump pump | ❌ | ❌ |