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Battery<br />
Description<br />
Spare part number<br />
9-cell, 83.0-Wh Li-ion battery 492550-001<br />
6-cell, 55.0-Wh Li-ion battery 492549-001<br />
3-cell, 31.0-Wh Li-ion battery 492548-001<br />
Before disassembling the computer, follow these steps:<br />
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn<br />
the computer on, and then shut it down through the operating system.<br />
2. Disconnect all external devices connected to the computer.<br />
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet<br />
and then unplugging the AC adapter from the computer.<br />
Remove the battery:<br />
1. Turn the computer upside down on a flat surface, with the battery bay toward you.<br />
2. Slide the battery release latches (1) to release the battery.<br />
3. Remove the battery (2) from the computer.<br />
Install the battery by inserting it into the battery bay until you hear a click.<br />
46 Chapter 4 Removal and replacement procedures
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