Mac users interested in Battery health ckeck mac osx 10.6.8 generally download:
Battery Health Monitor is a free utility for MacBook, PowerBook and iBook owners that monitors virtual all battery health parameters and displays them in an easy-to-read format.
Analyze the state of your laptop battery and check such parameters as the current charge, the battery time remaining, the temperature, the power usage, and the age in years and cycles. Generate graphs, statistics, and reports and optimize laptop battery usage.