Allpowers R4000 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
EcoFlow DELTA Max 2000 costs $1200 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 71% more energy (3456Wh vs 2016Wh), so it runs the same load proportionally longer.
- Allpowers R4000 has 2600W more surge headroom (6000W vs 3400W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA Max 2000 is 58.0 lb lighter (48 lb vs 106 lb).
- Allpowers R4000 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Allpowers R4000 is rated for 3,500 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 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
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 | Allpowers R4000 | EcoFlow DELTA Max 2000 |
|---|---|---|
| Price | $2299 | $1099 |
| Capacity | 3456 Wh | 2016 Wh |
| Continuous output | 4000 W | 2400 W |
| Surge output | 6000 W | 3400 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,500 | 800 |
| Weight (lighter wins) | 106 lb | 48 lb |
| Max solar | 2000 W | 800 W |
| Recharge time (faster wins) | 1h 30m | 1h 48m |
Runtime head-to-head
| Appliance | Allpowers R4000 | EcoFlow DELTA Max 2000 |
|---|---|---|
| Refrigerator | 49.0 hrs | 28.6 hrs |
| Mini fridge | 93.3 hrs | 54.4 hrs |
| Chest freezer | 36.7 hrs | 21.4 hrs |
| CPAP machine | 73.4 hrs | 42.8 hrs |
| Sump pump | 3.7 hrs | 2.1 hrs |