Nikon D40 Guide User Manual page 22

Insertthe battery.
2.1 After confirming that tile power switch is in the off posi
tion, open the battery chamber cover.
2.2 Insert a fully charged battery as shown at right. Close tile
ba tte ryc ham be r cove r.
Removing the 8artery
Turn the camera off before removing the battery. To avoid shorting the battery, replace the terminal
cover when the battery is not in use.
10 Introduction:FirstSteps