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How we review portable power stations
We publish the brand's specs, the list price on the day we checked, and battery tests other sites have published, when we can link them. Each model page turns those specs into a score.
What every review checks
The score
Each model page shows a score from 7.0 to 10, to one decimal. Capacity, continuous output, weight, and the US list price are each scored from 7.0 to 10, then combined by the weights below.
| What we score | Weight | How it's scored |
|---|---|---|
| Capacity | 35% | On a log scale, 100 Wh is 7.0 and 5,000 Wh is 10. |
| Continuous output | 25% | On a log scale, 200 W is 7.0 and 7,000 W is 10. |
| Weight | 20% | Lighter scores higher. On a log scale, 150 lb is 7.0 and 4 lb is 10. |
| List price | 20% | US list price divided by rated watt-hours. $1.50 per Wh is 7.0 and $0.35 per Wh is 10. |
A price in another currency stays out of the score. Capacity, output, and weight then keep the ratio 35:25:20. A missing weight stays out the same way. Without a rated capacity or a continuous output, the page shows no score. The score uses the brand's rated capacity.
The runtime table estimates time as rated watt-hours × 85% ÷ the device's watts. Who it's for and who it's not follow the model's size, output, weight, and the reviews it already appears in.
How the order works
On a review, the first model is the pick for that page. The score is a separate number on the model page. On the model list, the number beside a row is its place in the sort you chose.
Models without a published battery test
Where no published battery test is linked, the page says you only have the brand's number. The model can still appear in the list and in a review. The score uses the brand's rated capacity.
Prices and tests
Prices are the brand's list price on the day we checked. They are not a live street price. If we haven't checked a price, the model shows none. A published battery test keeps the publisher's name and URL next to it.
Independence
A partnership would be labeled, and it would not change a spec or the order of a review. Some links may be affiliate links. Read the disclosure and the editorial policy.
Questions
Why do some models have no price?
We only show a price after we've checked it on the brand's site and noted the date. No price means we haven't confirmed one. It doesn't mean the station is free.
Did you test the watt-hours?
No. The watt-hour number in the specs is the brand's rating. When another site has published a usable watt-hour test and a link, that row is separate. Two labs can list different numbers.
Is there a score?
Each model page shows a spec index from 7.0 to 10. It weights capacity, continuous output, weight, and the US list price per watt-hour. The formula is on How we review.
Do these buttons earn a commission?
Some View on Amazon and View official site buttons may be affiliate links. If you buy through one, we may earn a commission. Your price stays the same.
What does Not listed mean?
That detail wasn't published, so it isn't filled in.