I could not see the battery widget in starship.
Based on my previous experience, I did not think about trying the nerd fonts. After looking a bit on the web and finding out that:
- they use the unicode characters f578, f583, f582, f57c, f58d that are not meant to convey anything (they don’t have proper unicode name)
- there is no consensus on their meaning, according to what I could see in here https://www.fileformat.info/info/unicode/char/f583/fontsupport.htm
- the only font that appeared to show battery was proprietary
Then I posted a github issue and eventually was told that the nerd fonts have the battery emojis.
Using the guide to know how to manually install, update, and uninstall fonts on linux, I could indeed see the battery.