Replacing The Battery - Compaq 315eu - Microtower PC Upgrade And Service Manual

Replacing the Battery

A lithium battery on the motherboard provides backup power for the computer
timekeeping capability. The battery has an estimated life expectancy of seven years.
When the battery starts to weaken, the date and time may become incorrect. If the battery
fails, replace it with a CR2032 lithium battery (3 volt, 220mAH rating) or an equivalent
battery.
WARNING: There is danger of explosion if the battery is incorrectly replaced.
Replace it only with a battery of the same, or an equivalent, type. Discard
used batteries according to the manufacturer's instructions.
1 Prepare the computer to be opened, and then remove the side panel. See "Opening
and Closing the Computer" on page 1.
2 Gently lay the chassis on its side.
3 Remove any cabling out of the way, if this is necessary in order to reach the battery.
4 Remove any memory modules, if this is necessary in order to reach the battery. See
"Adding Memory" on page 18.
5 To remove the battery, push the latch away from the battery, and then lift the battery
out of the socket.
6 Install the new CR2032 battery in the socket, with the positive (+) side facing the
latch.
7 Replace any memory modules or cables that you removed.
8 Place the chassis upright.
9 Replace the side panel, and then close the computer. See "Opening and Closing the
Computer" on page 1.
Upgrading and Servicing Guide
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