At the moment (on Pixel), Google lets you run Battery diagnostics. Android 15 Beta 4 adds more advanced Device diagnostics that also let you see Battery status.

You can access it from Settings > System > Device diagnosis (at the very bottom).

https://9to5google.com/2024/07/18/android-15-beta-device-diagnostics/

lnbc36u1pnfham7pp5wxtvxvemmt9y2kzdszjgm0355vd4dzev58hahd4qgee4n8fy6flshp5fp3agpjzfzehhqgznrw2q26kuhqsf9j3d0qzn84upf8jx82rdl9qcqzzsxqyz5vqsp597y3a67x072q0vgcfhsd7zf8akhu2fmvxq28tzt7hdytqcmsassq9qxpqysgqr00dshptzy5fgy6cl8lgquxat9r58d0q8whtw9mc9j24jppldyznkwqgfzem0lvq232np6mek4r643uv8796yvlqnpdg0lagdjhnvacqe94ywa