In the US having a battery replaced at a shop is cheap and you can probably find a place that will do it in less than an hour. There are a few nationwide chains

In the US having a battery replaced at a shop is cheap and you can probably find a place that will do it in less than an hour. There are a few nationwide chains of third-parties that do it, plus numerous independent local repair places. As far as HN goes it is not clear whether or not they are covered by GDPR. Yes, the site is viewable in Europe and people there can make accounts. But that's not sufficient. GDPR asserts extraterritorial jurisdiction when you are either (1) offering goods and services in the Union or (2) monitoring the behavior of data subjects in the Union that takes place in the Union. One of the recitals clarifies that the mere availability of a site to Europeans does not necessarily mean it is offering goods and services in the Union. The site has to envisage serving people in the Union.