article_snippet: Woolet also has self-charging batteries.
article_snippet: Woolet also has self-charging batteries and the company is still experimenting on whether self-charging batteries will charge through movement or heat. '
article_snippet: [Plus] batteries are an essential component of any smart device but are also often its weakest component. '
article_snippet: That’s why we designed self-charging batteries to provide dependable power that lasts.'