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.
- A laptop can charge from the USB-C port, up to 100 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
8.3 / 10, from the four rows below. Each row is scored from 7.0 to 10.
CapacityWeight 35%
7.7
256 Wh
Continuous outputWeight 25%
7.3
300 W
WeightWeight 20%
9.4
7.87 lb · 3.57 kg
List priceWeight 20%
9.5
$0.54 / 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 |
|---|---|---|---|
| No published battery test. | |||
Runtime estimates
About how long ALLPOWERS VOLIX P300 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 21.8 hours |
| Phone fast charge (15 W) | About 14.5 hours |
| CPAP (40 W) | About 5.4 hours |
| Car fridge (60 W) | About 3.6 hours |
| Laptop (65 W) | About 3.3 hours |
| Electric kettle (1,000 W) | Can't run this. |
Full specs
Published by the brand.
| Capacity | 256 Wh |
|---|---|
| Chemistry | LiFePO4 |
| Cycle life | 4000+ |
| Battery test | No published battery test. |
| Continuous output | 300 W |
|---|---|
| Peak output | 600 W |
| Ports | AC outlets x 1, USB-C x 1 up to 100W, USB-A x 2, 12V car outlet |
| Expandable | No |
| UPS | Yes, about 20 ms |
| USB-C | 100 W |
| Solar input | 110 W |
|---|---|
| Solar voltage | 11–30V XT60 (GearRanking; confirm) |
| Wall charge | About 1 hours |
| AC input | 300 W |
| Car charge | 110 W |
| Warranty | 5 years |
| Weight | 7.87 lb · 3.57 kg |
| Dimensions | 10.2 x 8.2 x 4.9 in |
| List price | $139.00 on October 2026 |
Similar models
EcoFlow RIVER 3
245 Wh · 300 W$319.00 · Sold out
EcoFlow RIVER 3 Plus
286 Wh · 600 W$299.00
Anker SOLIX C300
288 Wh · 300 W$429.99When to pick something else
- A longer outage or more devices: DJI Power 500, with more capacity and more output.
Reviews that include this model
- Best Portable Power Stations Under $50010 models
- Best Portable Power Stations Under $3007 models
- Lightest Portable Power Stations Worth Buying10 models
- Best Portable Power Stations for Working From Home10 models
- Best Portable Power Stations for an Emergency Kit10 models
- Best Compact Portable Power Stations10 models
- Best Portable Power Stations to Charge from a Car10 models
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