HP s3720y Upgrading and Servicing Guide - Page 28

Removing and Replacing the Battery A lithium battery on the motherboard provides backup power for the computer's timekeeping capability. When the battery starts to weaken, the date and time may be incorrect. If the battery fails, replace it with a CR2032 lithium battery (3-volt, 220 mAh rating) or an equivalent battery. Before You Begin Observe the following requirements before removing and replacing the component: WARNING: There is danger of explosion if the battery is incorrectly replaced. Replace only with the same, or equivalent, type of battery. Discard used batteries according to the manufacturer's instructions. WARNING: Never use metal objects, such as pliers, to remove or replace the battery. Metal contact may cause a battery short and damage the battery. Procedure 1 Prepare the computer, and remove the computer cover. Complete the procedures "Opening the Computer" on page 2. 2 Gently lay the computer on its side. 3 Complete the procedure "Removing an Optical Disc Drive" on page 9. 4 Remove any cabling, if necessary, to reach the battery. 5 Move the retaining clip away from the battery. Lift the battery from the socket to release the battery. 24 Upgrading and Servicing Guide