We do the spec homework so you can size the purchase.

What we do

We maintain a database of manufacturer-published specifications for the stations people actually cross-shop: EcoFlow, Bluetti, Anker SOLIX, Jackery, and Goal Zero. We normalize those specs, apply a consistent usable-energy rule, and explain which differences change a buying decision.

We do not claim hands-on testing we did not perform. We do not invent owner quotes or lab results. When a spec is unpublished or disputed, we say so. When a manufacturer changes a product, we update the page and note the date.

How we make money

WattBench earns commissions from merchant affiliate programs when readers buy through our links. Those links are marked rel="sponsored nofollow", and every page carries a disclosure. Merchants do not pay for placement, rankings, or verdicts. Our picks are based on the same scoring model we publish.

We are not owned by a manufacturer or a retailer. We do not accept paid reviews. If that changes, it will be disclosed prominently.

How we score

Six weighted dimensions: capacity, output, portability, recharge, expandability, and value. Each is normalized against the full database. The weights are published on the methodology page, along with the runtime formula and limitations.

Corrections

If a spec is wrong, a price band is stale, or a product has been discontinued, email wildbills1977+wattbench@gmail.com. Include the product, the field, and a source. We review corrections and update the page when verified.

What we are not

We are not an electrician, a medical advisor, or a substitute for a licensed installation. A 240V transfer switch, a subpanel, and a generator inlet require proper equipment and professional work. A CPAP backup plan should be reviewed with your clinician and device provider.