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ALLPOWERS VOLIX P300 300W 256Wh Review
256Wh of storage, 300W continuous output, LiFePO4 cells. Listed at $119 at ALLPOWERS.
The ALLPOWERS VOLIX P300 300W 256Wh is a portable under 600wh unit holding 256Wh. At $0.46 per watt-hour it is priced below the median for the band, which makes it one of the cheaper ways to buy this much capacity. It uses LiFePO4 cells, so it is built to be kept rather than replaced. It lists at $119 against an $249 MSRP.
Manufacturer price at the time of writing. We may earn a commission, which never changes what the figures say.
Computed from this unit’s published specification, not from a manufacturer claim. Method and the full catalogue comparison are in our power station price index.
What the ALLPOWERS VOLIX P300 300W 256Wh will run, and for how long
Runtimes below are calculated from the 256Wh rated capacity, derated to 85% for AC loads and 92% for USB and 12V loads to cover inverter and conversion losses. They are arithmetic, not lab measurements, but they are the same arithmetic applied to every unit we track, so the comparison holds. Anything drawing more than the 300W continuous rating is left off the list because this unit cannot carry it.
| Load | Estimated runtime |
|---|---|
| Phone charge (12Wh) | 19 charges |
| Wi-Fi router (10W) | 21 hr 46 min |
| LED work light (10W) | 23 hr 33 min |
| CPAP, humidifier off (40W) | 5 hr 26 min |
| Laptop (60W) | 3 hr 38 min |
| 12V portable fridge (45W avg) | 4 hr 50 min |
| 55-inch TV (90W) | 2 hr 25 min |
Real figures land below these. A fridge cycles rather than drawing continuously, and cold weather costs a lithium pack usable capacity, so treat the table as the ceiling rather than the expectation.
Charging and power delivery
It accepts 100W from a wall outlet. Maximum solar input is 110W. At 70% of that rating, which is what a fixed panel realistically delivers across a good day, a full charge from empty is roughly 3 hr 19 min of usable sun. Switchover to battery is rated at 20ms, fast enough to keep a desktop or a router from dropping.
ALLPOWERS VOLIX P300 300W 256Wh specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Capacity | 256Wh |
| Continuous AC output | 300W |
| Cell chemistry | LiFePO4 |
| Weight | 7.9 lb |
| Max solar input | 110W |
| Max AC input | 100W |
| UPS switchover | 20ms |
| Noise | 30 dB |
| Warranty | 5 years |
| Price at ALLPOWERS | $119 |
| Cost per watt-hour | $0.46 |
How the ALLPOWERS VOLIX P300 300W 256Wh compares
The closest units we track from other manufacturers in the same band, matched on capacity rather than on price.
| ALLPOWERS VOLIX P300 300W 256Wh | OUPES Exodus 600 | EcoFlow RIVER 3 | |
|---|---|---|---|
| Capacity | 256Wh | 256Wh | 245Wh |
| Output | 300W | 600W | 300W |
| Cycle life | — | 3,500 cycles | — |
| Weight | 8 lb | 8 lb | — |
| Price | $119 | $199 | $199 |
| Cost per watt-hour | $0.46 | $0.78 | $0.81 |
Where the ALLPOWERS VOLIX P300 300W 256Wh sits in its band
We track 36 units in the portable under 600wh band with both a price and a published capacity. They run from $118 to $599.95, and from 128Wh to 576Wh. On cost per watt-hour the ALLPOWERS VOLIX P300 300W 256Wh ranks 4 of 36, where 1 is the cheapest capacity in the band. That puts it in the cheapest third, which is the single strongest thing on its spec sheet. Ranking on cost per watt-hour deliberately ignores build quality, port selection and warranty, so read it as one input rather than as the answer.
Alternatives to the ALLPOWERS VOLIX P300 300W 256Wh
Units we track in the same band that are close enough to be genuine substitutes, matched on capacity. Each links to its own review.
- OUPES Exodus 600 review — 256Wh, 600W output, listed at $199, $0.78 per watt-hour, dearer capacity than the ALLPOWERS VOLIX P300 300W 256Wh.
- EcoFlow RIVER 3 review — 245Wh, 300W output, listed at $199, $0.81 per watt-hour, dearer capacity than the ALLPOWERS VOLIX P300 300W 256Wh.
- BLUETTI EB3A review — 268Wh, 600W output, listed at $219, $0.82 per watt-hour, dearer capacity than the ALLPOWERS VOLIX P300 300W 256Wh.
- EcoFlow RIVER 2 (240) review — 240Wh, 300W output, listed at $199, $0.83 per watt-hour, dearer capacity than the ALLPOWERS VOLIX P300 300W 256Wh.
Who the ALLPOWERS VOLIX P300 300W 256Wh suits
It is a sensible buy for weekend camping, a CPAP overnight, phones and laptops, and keeping a router alive through a short outage. It is the wrong tool for anything with a heating element, and any attempt to run a fridge for more than a day.
ALLPOWERS VOLIX P300 300W 256Wh questions
How long will the ALLPOWERS VOLIX P300 300W 256Wh run a fridge?
A full-size fridge averages about 50W once you account for the compressor cycling on and off. From 256Wh, derated to 85% for inverter losses, that is roughly 4 hr 21 min on a full charge. A 12V portable fridge draws less and will run considerably longer.
Can the ALLPOWERS VOLIX P300 300W 256Wh be charged by solar?
Yes. It accepts up to 110W of solar input. Panels rarely hit their rated figure in the field, so plan on about 70% of the panel rating across a clear day.
Does the ALLPOWERS VOLIX P300 300W 256Wh work as a UPS?
It switches to battery in about 20ms. That is quick enough for a desktop computer, a router or a modem, all of which tolerate a gap in that range without rebooting.
What warranty does the ALLPOWERS VOLIX P300 300W 256Wh carry?
ALLPOWERS covers it for 5 years. Cycle life and warranty are different promises, and the cycle figure is the one that tells you how long the pack stays useful.
Is the ALLPOWERS VOLIX P300 300W 256Wh worth it?
At $119 it works out at $0.46 per watt-hour. It costs less per watt-hour than the median unit in its band, which is the strongest argument in its favour. Read the comparison table above against the two closest rivals before deciding.
What is not published
ALLPOWERS does not state the rated cycle life for this model. We list figures rather than estimate them, so those rows stay empty until the manufacturer publishes them. If you need one of them to make the decision, ask ALLPOWERS directly and hold them to the answer.
How we assess these
Every figure on this page comes from the manufacturer, and every derived number, cost per watt-hour and estimated runtime, is calculated the same way for all 437 products we track. That is what makes the comparison meaningful: we are not scoring units against a private impression of them, we are putting published figures side by side and doing the arithmetic in public. Where a manufacturer stays quiet, we say so rather than filling the gap.