EcoFlow DELTA 3 Ultra 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
EcoFlow DELTA 3 Ultra costs $500 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 13% more energy (3456Wh vs 3072Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 1200W more surge headroom (7200W vs 6000W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 3 Ultra is 22.2 lb lighter (83.8 lb vs 106 lb).
- EcoFlow DELTA 3 Ultra is rated for 4,000 cycles vs 3,500 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Ultra
3kWh with 7200W surge at $1799 — this is whole-home territory at a mid-range price. The catch is the 800W solar input.
Best for: Grid-tied home backup where you recharge from the wall, not the sun.
Where it falls short:
- 800W solar input is low for 3kWh — slow off-grid refills
- 83.8 lb
Allpowers R4000
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 | EcoFlow DELTA 3 Ultra | Allpowers R4000 |
|---|---|---|
| Price | $1799 | $2299 |
| Capacity | 3072 Wh | 3456 Wh |
| Continuous output | 3600 W | 4000 W |
| Surge output | 7200 W | 6000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,500 |
| Weight (lighter wins) | 83.8 lb | 106 lb |
| Max solar | 800 W | 2000 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | Allpowers R4000 |
|---|---|---|
| Refrigerator | 43.5 hrs | 49.0 hrs |
| Mini fridge | 82.9 hrs | 93.3 hrs |
| Chest freezer | 32.6 hrs | 36.7 hrs |
| CPAP machine | 65.3 hrs | 73.4 hrs |
| Sump pump | 3.3 hrs | 3.7 hrs |