Anker SOLIX C1000 vs EcoFlow RIVER 2 Max
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 $700 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX C1000 holds 106% more energy (1056Wh vs 512Wh), so it runs the same load proportionally longer.
- Anker SOLIX C1000 has 1400W more surge headroom (2400W vs 1000W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Max is 15.2 lb lighter (13.2 lb vs 28.44 lb).
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.
The default recommendation for most people. It clears the 1kWh bar, recharges in under an hour, and undercuts almost everything with comparable specs.
Best for: First-time buyers who want one unit for camping and short outages without overpaying.
Where it falls short:
- 2400W surge won't start a sump pump or well pump
- Only 1056Wh — a fridge-plus-devices outage tops out around a day
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
| Spec | Anker SOLIX C1000 | EcoFlow RIVER 2 Max |
|---|---|---|
| Price | $999 | $299 |
| Capacity | 1056 Wh | 512 Wh |
| Continuous output | 1800 W | 500 W |
| Surge output | 2400 W | 1000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 28.44 lb | 13.2 lb |
| Max solar | 600 W | 220 W |
| Recharge time (faster wins) | 58 min | 1h |
Runtime head-to-head
| Appliance | Anker SOLIX C1000 | EcoFlow RIVER 2 Max |
|---|---|---|
| Refrigerator | 15.0 hrs | 7.3 hrs |
| Mini fridge | 28.5 hrs | 13.8 hrs |
| Chest freezer | 11.2 hrs | 5.4 hrs |
| CPAP machine | 22.4 hrs | 10.9 hrs |
| Sump pump | ❌ | ❌ |