Regardless of the power-on state, voltage is always present on the system board as long as
the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to
the internal components of the computer.
Remove the access panel.
Locate the battery and battery holder on the system board.
On some computer models, it may be necessary to remove an internal component to gain
access to the battery.
Depending on the type of battery holder on the system board, complete the following instructions to
replace the battery.
Lift the battery out of its holder.
Slide the replacement battery into position, positive side up. The battery holder automatically
secures the battery in the proper position.
To release the battery from its holder, squeeze the metal clamp that extends above one edge of
the battery. When the battery pops up, lift it out (1).
To insert the new battery, slide one edge of the replacement battery under the holder's lip with
the positive side up. Push the other edge down until the clamp snaps over the other edge of
the battery (2).