Energiza - Battery Monitor

With Energiza, you are always up-to-date about the current state of your battery. At your fingertip, right from the menu bar, Energiza provides you with information about:

• Remaining time until the battery is empty or fully charged
• Health of your battery
• Number of charging cycles your battery has already completed
• Temperature of your battery (You will receive a notification if your battery gets too hot or too cold.)
• Power consumption of your MacBook when you are on battery
• The power your charger is delivering when charging

You can configure Energiza according to your needs and display the most important information directly in the menu bar. 
And the best part... it's free!