Pentax K-7 Operating Manual page 47

2
Face the 2 mark on the battery towards the outside of the
camera, push the battery lock lever in the direction of the
arrow (3) and insert the battery.
Insert until the battery locks.
To remove the battery, push the
battery lock lever in the direction
of the arrow (3) with your hand.
Remove the battery when it pops
out slightly.
3
Close the battery cover (4) and
turn the battery cover unlock
knob towards CLOSE (5) to
lock.
Stow the battery cover unlock knob after
closing the battery cover.
Use the AC adapter kit K-AC50 (optional) when using the camera for a
prolonged period. (p.47)
3
Battery lock lever
4
5
45
2