It’s because you put the case down unevenly and most of the charge sloshed to one side

Fixed

where my wired homies at

Likely dirty/corroded charger connecting points that make the charging contact intermittent.

Clean them, scrape off the layer of crust/corrosion with a jewler's screwdriver if you have to. Once they're clean and charge well again, I recommend putting a little dab of dielectric grease to protect them from corroding again.

Mine started doing that a year after I bought them and I was about to throw them away when I tried doing that and it completely fixed it.

it's the pogo pins

it's always the pogo pins

Could it be that only one of them connects to the phone, and then connects to the other earbud also, thus using up more power?

Most of the comments here completely miss the fact that difference in the OP appears after charging, not after using. It doesn't matter if one is primary or not, they both had the same amount of time to charge from 0%, so they should be the same.

I had some simple Huaiway earbuds and they charged without issues. Then I got the Pixel Buds free with my phone and my god they suck. The charging/discharging seems to be completely random (not to mention issues with pairing and terrible fit).

it's always the left ear, why? i want to know too.

Huh. This happens to me in a different way with OpenRun headphones. They don't auto shutdown when disconnected. You have to turn them off because they just stay on until the next time you want to use them.

And then you pick them up a few days later thinking they should be fine, but no, they spent days idling and only have a few minutes of use left.

Likely the "brain" for the pair is on that side and the extra load of doing it's job has worn down the battery's life faster on that side.

yeah but I'll take it over a wired set where one has to have the cord wrapped around my ear in a specific way for sound to come out.

except no because a good enough replacement set was like 20 bucks and high end ones have always had and still do have removable cables.

Your earbuds when I take them out of my ass:

Clean the case you nasty ass

Which pocket do you keep your phone in?

I use the left one more than the right, I like keeping one out so I can hear my son properly. Maybe you did that and forgot?

reasing this while my case is so empty that my headphones dont even turn on when i take them out, even though they still have charge (i used them just 20 minutes ago)

This is actually the primary reason I switched from Pixel to iPhone. I was sick and fed up of leaving the house, opening up the pixel buds case and 1 bud not connecting, or having minimal charge, or it just cuts out after a minute of listening to something. Standing in the middle of the street troubleshooting earbuds whilst I just want to listen to something whilst going somewhere was so frustrating. Moved to iphone and airpods - not had an issues since (about 2 years now). Yes I tried different earbuds with my pixel. No, they weren't any better. In-fact I still have some and they work better with my iphone.

I don't go in for fanboism when it comes to tech companies, but the build quality of Samsung and Google is atrocious.