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EcoFlow · solar generator kit
EcoFlow River 2 + 45W Solar Panel
Small class (under 500 Wh). #54 of 141 solar generator kits on Benchwatt by popularity on Amazon US.
Capacity
256 Wh
Output
300 W
Weight
39.6 lb
Wh per lb
6
Price and availability are on Amazon; we don't show or track prices.
Published specs
| Brand | EcoFlow |
|---|---|
| Model | River 2 |
| Battery capacity | 256 Wh |
| Rated AC output (continuous) | 300 W |
| Battery chemistry | LiFePO4 |
| Weight | 39.6 lb |
| Bundled solar panel | 45 W |
| Amazon ASIN | B0D12QYWPB |
| Specs checked | November 11, 2026 |
From the maker's listing. Specs not stated there are left out rather than guessed.
Our math
6 Wh per pound (256 Wh ÷ 39.6 lb). That is #123 of 123 solar generator kits on Benchwatt with a listed weight. Higher means more stored energy for each pound you carry.
At its full rated 300 W, a full charge lasts about 44 min.
Runtime estimates
Hours = 256 Wh × 0.85 ÷ device watts. Typical draws; check your own device's label.
| Device | Draw | Runtime |
|---|---|---|
| Phone charging | 10 W | 22 h |
| Laptop | 60 W | 3.6 h |
| CPAP (no humidifier) | 40 W | 5.4 h |
| Mini fridge (average draw) | 60 W | 3.6 h |
| Full-size fridge (700 kWh/yr label) | 80 W | 2.7 h |
| TV | 100 W | 2.2 h |
| Space heater | 1,500 W | Exceeds rated output |
Estimates, not measurements. Fridges cycle on and off, so their average draw is well under their rated watts; heaters and kettles run near full power.
Similar capacity
Other solar generator kits within ±35% of 256 Wh, most popular first.
| Model | Capacity | Output | Cells | Weight | Wh/lb | Amazon link |
|---|---|---|---|---|---|---|
| EcoFlow River 2 + 45W Solar Panel | 256 Wh | 300 W | LiFePO4 | 39.6 lb | 6 | Check price on Amazon |
| Jackery Solar Generator 300 + 40W Solar Panel | 292 Wh | 300 W | LiFePO4 | 12.9 lb | 23 | Check price on Amazon |
| ZeroKor Solar Generator 300 + 60W Solar Panel | 280 Wh | 300 W | — | 5.1 lb | 55 | Check price on Amazon |
| MARBERO M822SL40MAX + 40W Solar Panel | 172 Wh | 200 W | — | 3.3 lb | 52 | Check price on Amazon |
| Anker SOLIX C300 DC + 60W Solar Panel | 288 Wh | 300 W | LiFePO4 | 6.2 lb | 46 | Check price on Amazon |
| Jackery Solar Generator 300 + 100W Solar Panel | 292 Wh | 300 W | LiFePO4 | 7.5 lb | 39 | Check price on Amazon |
| Anker SOLIX C300 + 60W Solar Panel | 288 Wh | 300 W | LiFePO4 | 15.5 lb | 19 | Check price on Amazon |
EcoFlow River 2 + 45W Solar Panel
256 Wh / 300 W · LiFePO4. See the current price and seller on Amazon.