How do I know if my Mac battery is bad?

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Tags

1. #power
2. #choose
3. #system
4. #panel
5. #cycle
6. #information
7. #current
8. #check
9. #count
10. #number
11. #upper
12. #report
13. #apple
14. #health
15. #corner
16. #under
17. #click