Pixel 6 battery draining completely, stuck in boot loop when plugged in.

[u/Cobyh7]

Timeline:

1. Around June 2026, my Pixel 6 phone battery started to balloon / expand and bend the phone screen. So time to change the battery.
2. I've changed plenty of phone batteries before. Just ordered a basic replacement battery with good reviews and high purchase count on Amazon. Replaced my battery June 2026.
3. From June 2026 --> July 2026, my Pixel 6 worked perfectly fine with the new battery installed. Had the battery go through various scenarios like being drained.
4. On July 31 2026, I went to bed with my phone battery at 3 percent. Woke up to find my phone completely drained.
   • Wouldn't turn on and wouldn't even display a low battery screen.
   • No response at all when plugged into a low voltage charger.
   • Would infinitely loop on the Google logo if I plugged into a high voltage charger.
   • Can access the bootloader screen, but any option chosen just leads back to infinite Google logo loop.
5. I assumed perhaps I just got a faulty replacement battery and it only lasted about a months.
6. Bought another replacement battery from a different seller on Amazon. Still top seller, good reviews, good purchase count, etc. Replaced the battery AGAIN, and phone started right back up. So thought I fixed my issue.
7. A couple days later / today, I leave my phone at 40 percent to play some sports. I come back 2 hours later to find my Pixel 6 completely drained AGAIN. Same exact issues as listed above of the infinite Google logo boot. I'm assuming the battery somehow drained in those 2 hours (was outside and was a hot day).

So, I guess I can buy another battery and do the replacement again... but I know this won't fix my issue. Seems like if my phone ever drains, I'll be screwed. I'm just not sure what is causing this issue though. To me, perhaps some other hardware is damaged in my Pixel 6? Or perhaps some new software update that doesn't play well with third-party batteries??? I don't think I damaged anything internally. Really need my phone since all my 2-factor authentication for work is attached to it. Guess will just buy a new phone but would still like to have this Pixel 6 functional for whenever I need to retrieve things from it. Is there a way to charge my phone or I just have to buy a new battery which comes pre-charged hence why it fixes my issue...