Juice

Juice is a better battery app for your Mac laptop. Running either as a windowed application or menu bar icon, Juice will provide you with detailed information about your battery. Number of cycles, battery health, charge status, and more are all available at a glance. Juice also tracks the status of your Mac's battery over time, and uses algorithms that improve the more you use Juice, providing you with usage estimations, health estimations, and graphs of these statistics as they change over time!