With Battery Health, you can easily see all the important information about your MacBook's battery, such as current charge level, battery capacity, power usage, number of times it has been charged and much more.
Be sure to check out the 'Tips' section within the app to learn a host of useful ways to improve the life of your MacBook's battery. Compatibility: OS X 10.7.4 or later Home Page - https://fiplab.com/apps/battery-health-for-mac 
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