As per your concern, we want to inform you that Battery life depends on how the battery is used. And it can reduce according the time of usage. you can check performance of Battery Optimization by using the below given steps.
Perform Battery Optimization: Go to Settings > Select Device Maintenance/Device Care > Optimize > Optimize all options like Battery, Storage, and Memory.
If you have any further questions or need assistance, please feel free to reach out.
