battery+doesn't+hold+charge

====The portion you want to pay attention to is Cycles. A typical life of a battery is around 300 cycles. After that, the battery just doesn't hold a charge that well (you might be lucky if it lasts 1 hour if fully charged).====
 * ====In the upper left hand corner, click on the apple, and go to **About this Mac**.====
 * ====Click on the button **More Info**.====
 * ====A new window will appear. On the left side, click on Power. The main window will now show your the status of your battery.====

Less than 100: There might be more troubleshooting involved - especially if your battery doesn't hold its charge. Click here for more information.
====More than 100: If your computer is around 1 year old and has gone through 300+ cycles, this is unusual. Otherwise, this is typical - my computer is just over 2 years old with 344 cycles. Eventually, you probably will need a replacement battery. Keep your charger handy at all times!====