About VerifiedWatts

Every spec checked against the manufacturer, with the source linked.

Portable power station spec sheets are a mess. Manufacturers headline an "X-Boost" or "power-lifting" figure that isn't the real surge rating, quote best-case charge times, and bury the numbers that actually decide whether a unit will run your fridge. VerifiedWatts exists to publish the real numbers, each one checked against the manufacturer's own listing, so you can compare like for like.

How we verify data

Every spec on this site is entered by hand from a primary source — the manufacturer's official product page or spec sheet — not scraped from other review sites, which propagate each other's errors. Each model records the source we used and the date we last checked it, both shown on the model's page. Where sources disagree (they often do on weight and surge), we go to the manufacturer to break the tie.

Models we have confirmed against a primary source carry a ✅ verified badge. Newly added models are published without it until we complete that check, and we say so plainly on the page rather than hide them. Right now 87 of our 100 models are fully verified, and the catalogue was last reviewed on July 29, 2026.

How our rankings work

We don't hand-pick winners. Every "best for" list is generated from the verified spec database by a fixed rule stated at the top of each page. A home backup list ranks by surge headroom, because a battery that can't start your compressor is useless no matter how large it is. A CPAP list ranks by the cheapest unit that covers two nights, because past "enough", extra capacity just adds weight and cost. The same rule runs for every model, so nothing gets a thumb on the scale.

Runtime estimates come from one shared formula — capacity × 0.85 inverter efficiency ÷ load watts, applying a realistic duty cycle for appliances that cycle, like fridges. Because it's one function used site-wide, the number you see on a model page matches the one on every ranking and in the calculator.

How we make money

VerifiedWatts earns affiliate commissions when you buy through the "Price" links on this site, at no extra cost to you. That funding never changes what we publish: the specs are the manufacturer's, the rankings are computed by rule, and we routinely tell readers to buy the cheaper option or to skip a unit entirely when the data says so. We'd rather you buy the right power station once than the wrong one twice. See our affiliate disclosure for the full detail.

Corrections

Specs change and mistakes happen. If a number here doesn't match what you find on the manufacturer's current listing, tell us and we'll check it against the source and fix it. Accurate data is the entire point of this site.