Dell U7021, WHL manual Replacing the Battery, 113

Battery

Replacing the Battery

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer’s electronic components. You can do so by touching an unpainted metal surface on the computer chassis.

A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years.

If you have to repeatedly reset time and date information after turning on the computer, replace the battery.

CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer’s instructions.

To replace the battery:

1Record all the screens in system setup (see page 119) so that you can restore the correct settings in step 8.

2Follow the procedures in "Before You Begin" on page 67.

3Locate the battery socket (see page 75).

NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Ensure that the object is inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board.

4Remove the battery by carefully prying it out of its socket with your fingers or with a blunt, nonconducting object such as a plastic screwdriver.

5Insert the new battery into the socket with the side labeled "+" facing up, and snap the battery into place.

6Close the computer cover.

battery

battery socket

tab

Removing and Installing Parts

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