The problem we are trying to solve

Buying a power station means comparing thirty products across eight brands whose specs are written in incompatible ways. One vendor quotes capacity at 1,152 Wh and another at “1.15 kWh”; one quotes weight in kilograms and another in pounds with a tolerance; one publishes a solar input ceiling and another only mentions the panel it ships with. The numbers look comparable and are not.

So we did the tedious part. Every figure on this site is read from the manufacturer’s own listing, converted into a single schema, stored with the vendor’s exact wording, and re-checked programmatically. Then we compute the things no vendor prints: cost per watt-hour, watt-hours per pound, charge rate in watts, lifetime throughput.

What we are not

We are not a testing lab

We do not own these units, and we do not claim to have measured them. No page on this site says “we tested” or “our lab found”, because we did not and it did not. What we do — normalising published specifications and computing comparable ratios — is genuinely useful and genuinely different from hands-on testing. Pretending to do both would make the useful part worthless.

We also publish no user reviews, no star ratings and no testimonials. We have not collected any, and we will not generate them to fill a template. Our editorial analysis is written by us and labelled as ours.

What is in the dataset

Coverage is deliberately curated rather than exhaustive: we track the models buyers actually shortlist, verified properly, instead of every SKU listed for sale anywhere.

MeasureValue
Models verified76
Brands profiled12
Verified spec values840

Read the full methodology for how values are collected, verified and rejected, and for the limitations we know about.

How we are funded

WattPicks is supported by affiliate commissions: if you follow a link to a manufacturer and buy something, we may earn a commission at no extra cost to you. This is disclosed on every page.

Affiliate revenue has never changed a number on this site, and structurally cannot: the dataset is generated from vendor pages by a script, and the rankings are computed from that dataset. There is no step where a commercial relationship can reach in and adjust a specification. Where we think a product is a poor choice for a given buyer, we say so while linking to it — that is the entire point of a comparison site.

Editorial rules we hold ourselves to

Get in touch

Found a number that disagrees with the manufacturer’s page? That is the most useful email you can send us. Contact WattPicks and it will be fixed at the source.