Anker SOLIX C800 vs EcoFlow RIVER 3 Plus
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 3 Plus costs $270 less. Whether that gap is worth closing depends on what you need to run.
- Anker SOLIX C800 holds 169% more energy (768Wh vs 286Wh), so it runs the same load proportionally longer.
- Anker SOLIX C800 has 400W more surge headroom (1600W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 3 Plus is 15.0 lb lighter (9.9 lb vs 24.9 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 C1000's smaller sibling. Same fast-charging DNA at a lower price, but the 768Wh capacity puts it firmly in weekend-trip territory.
Best for: Campers and van-lifers powering electronics, lights and a mini fridge — not home backup.
Where it falls short:
- 300W solar input is low — slow to top off off-grid
- 1600W surge rules out most motor-driven appliances
Doubles the River 3's output for $90 more, and adds an expansion battery port. The better buy of the two unless weight is everything.
Best for: Campers who want one unit that covers devices plus the occasional small appliance.
Where it falls short:
- 286Wh alone is a single evening of real use
- 220W solar input is modest
| Spec | Anker SOLIX C800 | EcoFlow RIVER 3 Plus |
|---|---|---|
| Price | $599 | $329 |
| Capacity | 768 Wh | 286 Wh |
| Continuous output | 1200 W | 600 W |
| Surge output | 1600 W | 1200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 24.9 lb | 9.9 lb |
| Max solar | 300 W | 220 W |
| Recharge time (faster wins) | 58 min | 1h |
Runtime head-to-head
| Appliance | Anker SOLIX C800 | EcoFlow RIVER 3 Plus |
|---|---|---|
| Refrigerator | 10.9 hrs | 4.1 hrs |
| Mini fridge | 20.7 hrs | 7.7 hrs |
| Chest freezer | 8.2 hrs | 3.0 hrs |
| CPAP machine | 16.3 hrs | 6.1 hrs |
| Sump pump | ❌ | ❌ |