I got my entire family Pixel 4XLs when they were new. Every single one had the battery replaced once under warranty, and then they denied more batteries (it was actually the fragile connector). So I started replacing them myself. I even slightly modified the connector mount so it would stop failing. The third batteries ended up lasting years because of my modification. Finally, all 3 died around 2023 from motherboard problems apparently. Otherwise great phones. Sad that some weird hardware problems killed them all for most people.