EcoFlow RIVER 2 Pro 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 RIVER 2 Pro costs $1700 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 350% more energy (3456Wh vs 768Wh), so it runs the same load proportionally longer.
- Allpowers R4000 has 4400W more surge headroom (6000W vs 1600W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Pro is 89.0 lb lighter (17 lb vs 106 lb).
- Allpowers R4000 is rated for 3,500 cycles vs 3,000 — meaningful if you cycle it daily.
The one you actually carry. At 17 lb it is light enough for one hand, yet unlike the true pocket units it has the 800W of output needed to run small appliances rather than just charge devices.
Best for: Backpackers, photographers and festival-goers who care about weight above all.
Where it falls short:
- 800W output limits you to electronics and small loads
- 220W solar input means slow off-grid top-ups
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 RIVER 2 Pro | Allpowers R4000 |
|---|---|---|
| Price | $599 | $2299 |
| Capacity | 768 Wh | 3456 Wh |
| Continuous output | 800 W | 4000 W |
| Surge output | 1600 W | 6000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,500 |
| Weight (lighter wins) | 17 lb | 106 lb |
| Max solar | 220 W | 2000 W |
| Recharge time (faster wins) | 1h 10m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Pro | Allpowers R4000 |
|---|---|---|
| Refrigerator | 10.9 hrs | 49.0 hrs |
| Mini fridge | 20.7 hrs | 93.3 hrs |
| Chest freezer | 8.2 hrs | 36.7 hrs |
| CPAP machine | 16.3 hrs | 73.4 hrs |
| Sump pump | ❌ | 3.7 hrs |