Mac Book Pro Battery Issues
1) Calibrating your Battery - This really doesnt have to be done that much any more - but it helps to narrow out problems - I suggest first giving the battery a 5-6 hour rest being disconnected - Do it while you sleep or not using - Completly dissconect the battery to the computer and wait...
To calibrate the battery:
-
Plug in the MagSafe power adapter and fully charge the MacBook or MacBook Pro battery until the light on the MagSafe connector changes to green and the Battery icon in the menu bar indicates that the battery is fully charged.
-
Allow the battery to rest in the fully charged state for two hours or longer. You may use your computer during this time as long as the power adapter is plugged in.
-
Disconnect the power adapter with the computer on and start using it with battery power. When the battery's charge gets low, you’ll see the low battery warning dialog on the screen.
-
Continue to keep your computer turned on until it goes to sleep. Save your work and close all applications when the battery's charge gets low and before the computer goes to sleep.
-
Turn off the computer or allow it to sleep for five hours or longer.
-
Reconnect the power adapter and leave it connected until the battery is fully charged. You may use your computer during this time.
Here is a list from apple about prices and service for your battery for Mac Books from 2009 apple_battery_support
How to check the Full Charge Capacity on your Mac Book Battery:
- Go to the apple on top left of screen
- Click on about this mac This gives you all the infomation about the version you are running processor speeds and memory -
- Click on More Info...
- Find in Hardware/ Power - This gives you the charge remaining and most importantly the Full Charge Capacity (mAh): 4689 - If this number is lower than 4000- It is a pretty good guess that you are in need of a new battery - it is deemed that if a battery has lost over 15-20+ percent from the original battery life - it should be replaced -