Growatt INFINITY 1500 vs Allpowers R4000
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
Growatt INFINITY 1500 costs $1200 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 129% more energy (3456Wh vs 1512Wh), so it runs the same load proportionally longer.
- Allpowers R4000 has 3000W more surge headroom (6000W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Growatt INFINITY 1500 is 68.5 lb lighter (37.5 lb vs 106 lb).
- Allpowers R4000 is rated for 3,500 cycles vs 3,000 — meaningful if you cycle it daily.
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 large expandable unit that undercuts the EcoFlow Delta Pro 3 on price while matching its 4,000W output — the trade is a less established support network.
Best for: Whole-home backup buyers prioritising price per watt over brand.
Where it falls short:
- 106 lb
- Brand support and resale trail the big names
| Spec | Growatt INFINITY 1500 | Allpowers R4000 |
|---|---|---|
| Price | $1099 | $2299 |
| Capacity | 1512 Wh | 3456 Wh |
| Continuous output | 2000 W | 4000 W |
| Surge output | 3000 W | 6000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,500 |
| Weight (lighter wins) | 37.5 lb | 106 lb |
| Max solar | 800 W | 2000 W |
| Recharge time (faster wins) | 1h 50m | 1h 30m |
Runtime head-to-head
| Appliance | Growatt INFINITY 1500 | Allpowers R4000 |
|---|---|---|
| Refrigerator | 21.4 hrs | 49.0 hrs |
| Mini fridge | 40.8 hrs | 93.3 hrs |
| Chest freezer | 16.1 hrs | 36.7 hrs |
| CPAP machine | 32.1 hrs | 73.4 hrs |
| Sump pump | ❌ | 3.7 hrs |