HP Compaq Presario,Presario CQ57-210 Getting Started page 43

To remove the battery:
CAUTION: Removing a battery that is the sole power source for the computer can cause loss of
information. To prevent loss of information, save your work and initiate Hibernation or shut down the
computer through Windows before removing the battery.
1. Slide the battery release latches (1) to release the battery.
2. Slide the battery up (2), and remove the battery from the battery bay (3).
Inserting or removing the battery 35