The checker runs in your browser. We have no accounts, no database and no cookies of our own.
What you type
The numbers you enter and the airline you pick are used in your browser to show the result. They are kept only in the page address (for example ?mah=20000&v=3.7&airline=EK&n=1) so you can share a result. We don’t store them anywhere else.
Analytics
We use Google Analytics 4 to count visits and clicks (for example “check submitted”, the airline code and the Wh band). We never send the exact capacity you typed, anything you type into a search box, or personal data. In the European Economic Area, the UK and Switzerland, analytics and ad storage stay off until you agree in the consent banner.
Ads
We show ads from Google AdSense. Google may use cookies to show and measure ads, subject to your consent where required. You can read how Google uses information from sites that use its services.
Affiliate links
When we add product links, the shop you visit may use its own cookies to know you came from us. See the affiliate disclosure.
Contact
Questions about privacy: contact@powerbankonplane.com.
Last updated 21 October 2026.