Now that android 14 is on graphene os anyone found apps to determine battery health percentage.
I found the app Batt which shows the battery cycle counts.
To view the battery health/battery manufacturing date/battery first use date it needs android.permission.BATTERY_STATS permission which can be given by Shizuku
But i did some math to find the battery health percentage of my 1 year old pixel 6a with 282 charge cycles.
looks like its about 88%, Anyone else checked your cycle count?
Note: As per apple a normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions.