You can try wiping the system cache partition on your device to see if that helps any. The system cache partition stores temporary system data. It's supposed to allow the system to access apps more quickly and efficiently, but sometimes things get cluttered and outdated, so a periodic cache clearing can help make the system run more smoothly.
- Turn off the device.
- Press and hold the Volume Up key and the Bixby / Power key.
- When the Android logo displays, release both keys.
- An 'Installing system update' message will show for 30 - 60 seconds before the Android system recovery menu options appear.
- Press the Volume down key several times to highlight wipe cache partition.
- Press Bixby / Power key to select.
- Press the Volume down key to highlight yes, them, and press the Bixby / Power key to select.
- When the wipe cache partition is complete, the Reboot system now is highlighted.
- Press the Bixby / Power key to restart the device.
Also, try looking at this link giving additional information on getting the most out of your battery: https://www.samsung.com/us/support/answer/ANS00078987/
If you are still experiencing battery issues after completing the above steps, the final step in troubleshooting would be to do a complete backup and factory reset of the phone. https://www.samsung.com/us/support/answer/ANS00062029
You can also visit any local uBreakiFix locations to have the battery tested. https://www.ubreakifix.com/samsung
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