Nokia Sprint PCS Manual page 46

Removing the Battery
WARNING
To remove your battery:
1.
Make sure the power is off so that you don't lose any
stored numbers or messages.
2.
To remove the back cover, turn the phone upside down,
push down on the back cover and slide it toward the
bottom of the phone.
3.
Lift up the battery to remove it.
22 Section 2A: Your Sprint PCS Phone: The Basics
Do not handle a damaged or leaking Li-Ion battery as you
can be burned.