Continued from my previous reply.
bukoujuice Said:
"Battery Level on Settings Do Not Match: About the battery level on settings, it is not matching with the graph shown with label 'Battery Level:'"
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Ah!
Troubleshooting Battery Level Inconsistencies:
(Applies to Intel-based Macs Only): Sometimes when changes are made to the system(i.e. updates), system configurations (i.e. for Sound) become manipulated, technically. So, reset the SMC and NVRAM.
When you boot into Safe Mode, items load by default, with certain settings and caches set aside. So, hold down the shift key upon boot. See what happens then.
- Create a New Administrator:
See if creating and logging in as a new administrator does the trick. There may be something misconfigured in your current user - something that is getting in the way. Go to: System Preferences > Users & Groups > Unlock > Click: "+" > Create the new administrator