EcoFlow RIVER 2 Max vs Anker 535 PowerHouse
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 $130 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow RIVER 2 Max has 250W more surge headroom (1000W vs 750W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow RIVER 2 Max is 3.5 lb lighter (13.2 lb vs 16.7 lb).
We'd skip the Anker 535 PowerHouse in this matchup. It costs $130 more than the EcoFlow RIVER 2 Max while matching or trailing it on capacity, surge and cycle life — there's no spec here that justifies the premium.
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 durable half-kWh unit for devices and light loads. Dependable, but the low output and slow charging make it a device-first companion.
Best for: Campers charging phones, laptops and lights, not appliances.
Where it falls short:
- 500W output is device-scale
- 120W solar input, slow recharge
| Spec | EcoFlow RIVER 2 Max | Anker 535 PowerHouse |
|---|---|---|
| Price | $299 | $429 |
| Capacity | 512 Wh | 512 Wh |
| Continuous output | 500 W | 500 W |
| Surge output | 1000 W | 750 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 13.2 lb | 16.7 lb |
| Max solar | 220 W | 120 W |
| Recharge time (faster wins) | 1h | 2h 30m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 Max | Anker 535 PowerHouse |
|---|---|---|
| Refrigerator | 7.3 hrs | ❌ |
| Mini fridge | 13.8 hrs | 13.8 hrs |
| Chest freezer | 5.4 hrs | ❌ |
| CPAP machine | 10.9 hrs | 10.9 hrs |
| Sump pump | ❌ | ❌ |