Dell Latitude D630C (Late 2008) - Manual (Page 48)

48 Using a Battery
2 Ensure that the computer is turned off.
3 Slide the two latch releases on the bottom of the computer, and then
remove the battery from the bay.
To replace the battery, follow the removal procedure in reverse order.
Storing a Battery
Remove the battery when you store your computer for an extended period of
time. A battery discharges during prolonged storage. After a long storage period,
recharge the battery fully (see "Charging the Battery" on page 47) before you use
it.
Battery Errors
To address error codes generated by the battery, refer to "Error Messages" on
page 110.