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Battery
Description Spare part number
6-cell, 55-Whr, 2.55-Ah Li-ion battery 646757-001
3-cell, 28-Whr, 2.55-Ah Li-ion battery 646755-001
Before disassembling the computer, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
Remove the battery:
1. Slide the battery/service door latch (1) to release the battery.
2. Pivot the front edge of the battery (2) up and back.
3. Remove the battery from the computer.
To insert the battery:
1. Align the tabs on the rear edge of the battery with the notches on the rear edge of the battery
bay.
2. Pivot the front edge of the battery down into the battery bay until it is seated. (The battery
release latch will automatically lock into place.)
44 Chapter 4 Removal and replacement procedures