Fit and tradeoffs
Who it's for
- Car camping and weekend trips, where the station has to come out of the trunk.
- Charging phones, lights, and a laptop.
Who it's not for
- High-draw appliances such as a kettle or microwave.
- Backing up a whole house.
Pros
- UPS switchover is about 20 ms.
- It can charge from a solar panel, up to 110 W.
Cons
- Continuous output is under 1,500 W.
- The battery cannot take an add-on pack.
Similar size
Under 500 Wh, 4 models. This one is highlighted.
| Model | Capacity | Output | Score | List price | Price / Wh |
|---|---|---|---|---|---|
| EcoFlow RIVER 3 | 245 Wh | 300 W | 7.9 | $319.00 | $1.30 / Wh |
| ALLPOWERS VOLIX P300 | 256 Wh | 300 W | 8.3 | $139.00 | $0.54 / Wh |
| EcoFlow RIVER 3 Plus | 286 Wh | 600 W | 8.2 | $299.00 | $1.05 / Wh |
| Anker SOLIX C300 | 288 Wh | 300 W | 7.8 | $429.99 | $1.49 / Wh |
Score
7.9 / 10, from the four rows below. Each row is scored from 7.0 to 10.
CapacityWeight 35%
7.7
245 Wh
Continuous outputWeight 25%
7.3
300 W
WeightWeight 20%
9.4
7.8 lb · 3.54 kg
List priceWeight 20%
7.5
$1.30 / Wh
How to read this: The number compares models on the same specs. It is not a mark of absolute quality. The weights are on How we review.
Battery test
How much battery another site measured, next to the brand's number. Their test may use a different load.
| Source | Usable capacity | Share of rated | Note |
|---|---|---|---|
| ComputerBase | 211 Wh | 86% | Steady 60 W AC load on the 230 V version. The same page lists 210 Wh at 260 W AC. |
| CHIP | 216 Wh | 88% | Taken from the 230 V outlet. |
Runtime estimates
About how long EcoFlow RIVER 3 runs common devices. Estimate, not a measurement: rated watt-hours × 85% ÷ the device's watts. Temperature, startup, and conversion loss change the real time.
| Device | Runtime (estimate) |
|---|---|
| Small fan (10 W) | About 20.8 hours |
| Phone fast charge (15 W) | About 13.9 hours |
| CPAP (40 W) | About 5.2 hours |
| Car fridge (60 W) | About 3.5 hours |
| Laptop (65 W) | About 3.2 hours |
| Electric kettle (1,000 W) | Can't run this. |
Full specs
Published by the brand.
| Capacity | 245 Wh |
|---|---|
| Chemistry | LiFePO4 |
| Cycle life | Not listed |
| Battery test | 211 Wh · 86% of rated |
| Continuous output | 300 W |
|---|---|
| Peak output | 600 W |
| Ports | Not listed |
| Expandable | No |
| UPS | Yes, about 20 ms |
| Solar input | 110 W |
|---|---|
| Weight | 7.8 lb · 3.54 kg |
| List price | $319.00 on November 2026. Sold out on the brand page. |
Similar models
ALLPOWERS VOLIX P300
256 Wh · 300 W$139.00
EcoFlow RIVER 3 Plus
286 Wh · 600 W$299.00
Anker SOLIX C300
288 Wh · 300 W$429.99When to pick something else
- Phones and lights on a smaller budget: ALLPOWERS VOLIX P300, listed at less than half the price.
- A longer outage or more devices: DJI Power 500, with more capacity and more output.
Reviews that include this model
None of the reviews include this model.
Editorial team · Updated October 30, 2026
Specs and the list price are checked against the sources linked on this page. About · How we review · Editorial policy
Specs and the list price are checked against the sources linked on this page. About · How we review · Editorial policy