MacBook Pro 13' Unibody Mid 2009 Battery Replacement · MacBook Pro 13" Unibody: Seven 3 mm Phillips screws. Three 13.5 mm Phillips screws. Step 2 Slightly lift the lower case and
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MacBook Pro 13" Unibody Mid 2009 BatteryReplacement
If your battery no longer holds a charge, use this guide to replace it.
To reassemble your device, follow these instructions in reverse order.
Step 5
Lift the battery out of the upper case.
If you're installing a new battery, youshould calibrate it after installation:
Charge it to 100%, and then keepcharging it for at least 2 morehours. Next, unplug and use itnormally to drain the battery.When you see the low batterywarning, save your work, andkeep your laptop on until it goesto sleep due to low battery. Waitat least 5 hours, then charge yourlaptop uninterrupted to 100%.
If you notice any unusualbehavior or problems afterinstalling your new battery, youmay need to reset yourMacBook's SMC.