At a glance
Full specs ↓- Capacity
- 256 Wh
- Usable energy
- 230 Wh
- AC output
- 300 W
- Surge
- 600 W
- Chemistry
- LiFePO4
- Cycle life
- 3000 cycles
- Max solar
- 110 W
- Weight
- 7.7 lb
Best for
Phones & laptops
CPAP
Weekend camping
Estimated usable capacity
Estimate
196 Wh
at the outlet · ~77% of the 256 Wh rating
An estimate, not a measurement: we derate the 256 Wh rating for a safe depth-of-discharge and ~15% inverter loss (DC→AC). We haven't bench-tested this unit yet, so treat it as a solid approximation.
EcoFlow
EcoFlow River 2
★ 4.5 / 5
The EcoFlow River 2 is a 256Wh LiFePO4 portable power station delivering 300W continuous (600W surge). Rated for ~3000 cycles and up to 110W of solar input.
$189
$0.822/Wh
Check current price →
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Where to buy
1 retailer
Prices refresh daily and may change — confirm on the retailer's site.
Full specifications
| Battery capacity | 256 Wh |
| Usable capacity | 230 Wh |
| AC output | 300 W |
| Surge output | 600 W |
| Chemistry | LiFePO4 |
| Cycle life | 3000 cycles |
| Max solar input | 110 W |
| Expandable | No |
| Weight | 7.7 lb |
| Warranty | 5 yrs |
| Ports | 2x AC | 1x USB-C | 2x USB-A | 1x car |
Video review
We recommend watching a real-world test before buying. Here's a hands-on review of the River 2:
Channels we trust for hands-on testing
Independent reviewers who bench-test capacity, inverters and real-world runtime.
Hobotech
Rigorous real-world capacity & inverter testing.
DIY Solar Power with Will Prowse
The go-to for DIY off-grid and teardown reviews.
The Solar Lab
Real world testing of solar panels and power stations.
How long will the River 2 run…
Estimated runtime per full charge for common loads.
Phone charge (about 20 hours)
Laptop (about 3.3 hours)
Wi-Fi router / modem (about 13 hours)
LED lights (per bulb) (about 20 hours)
CPAP machine (about 4.9 hours)
Mini fridge (about 3.3 hours)
Full-size fridge (about 1.3 hours)
12V cooler / fridge (about 4.4 hours)
Microwave (1000W) (under an hour)
Coffee maker (under an hour)
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