With coconutBattery you are always aware of your current battery health. It shows you live information about the battery in your Mac and iOS device (iPhone, iPad, iPod touch) including:
Age of your Mac, iOS device and battery
How often the battery was charged
Your battery health (capacity in relation to the original capacity your battery had when it left the factory)
and much more…
You are also able to save the current health information, so you can see the changes of your battery over time. With the online service “coconutBattery Online” you even can compare these information with others.