EcoFlow RIVER 2 Max vs Allpowers R1500
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 Max costs $400 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R1500 holds 125% more energy (1152Wh vs 512Wh), so it runs the same load proportionally longer.
- Allpowers R1500 has 2000W more surge headroom (3000W vs 1000W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Max is 24.3 lb lighter (13.2 lb vs 37.5 lb).
- Allpowers R1500 is rated for 3,500 cycles vs 3,000 — meaningful if you cycle it daily.
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
Double the River 2's capacity and output for $100 more. The sweet spot of EcoFlow's small line for anyone eyeing the occasional small appliance.
Best for: Campers who want headroom over a pure device charger without the size of a 1kWh unit.
Where it falls short:
- Still not enough output for heaters or compressors
- 220W solar input is modest
A well-priced 1.1kWh with a real 1,800W output and fast charging, a common budget pick for home backup starter kits.
Best for: First-time backup buyers who want 1,800W output cheap.
Where it falls short:
- 37.5 lb for 1.1kWh
- Not expandable
| Spec | EcoFlow RIVER 2 Max | Allpowers R1500 |
|---|---|---|
| Price | $299 | $699 |
| Capacity | 512 Wh | 1152 Wh |
| Continuous output | 500 W | 1800 W |
| Surge output | 1000 W | 3000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,500 |
| Weight (lighter wins) | 13.2 lb | 37.5 lb |
| Max solar | 220 W | 700 W |
| Recharge time (faster wins) | 1h | 1h 20m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Max | Allpowers R1500 |
|---|---|---|
| Refrigerator | 7.3 hrs | 16.3 hrs |
| Mini fridge | 13.8 hrs | 31.1 hrs |
| Chest freezer | 5.4 hrs | 12.2 hrs |
| CPAP machine | 10.9 hrs | 24.5 hrs |
| Sump pump | ❌ | ❌ |