Pentax Optio M20 Operating Manual page 23

Use the AC adapter kit K-AC51 (optional) if you intend to use the
camera for a long time. (p.23)
• AA alkaline, AA lithium and AA nickel manganese batteries are not
rechargeable.
• Do not open the battery/card cover or remove the batteries while
the camera is turned on.
• If you do not intend to use the camera for a long time, remove the
batteries. If the batteries are left in the camera for a long time, they
may leak.
• If the batteries have been removed from the camera for a long
time, when they are reinserted and the camera is turned on, the
message [Battery depleted] may appear. This can also happen
when using the camera for the first time; however this is not a
malfunction. Wait a minute and then turn the camera on again to
reset the camera. The date and time may also be reset.
• Insert the batteries correctly. If the batteries are incorrectly
oriented, malfunction may result. Wipe the ends of the batteries
and insert them into the camera.
• Image Storage Capacity, Movie Recording Time, Sound
Recording Time, and Playback Time
(at 23°C with the LCD monitor on and fresh batteries inserted)
Number of recordable images and playback time for different types of batteries.
Battery Type
AA lithium
batteries
AA NiMH
batteries
AA nickel
manganese
batteries
AA alkaline
batteries
*1: Recording capacity shows approximate number of shots recorded during
CIPA-compliant testing (with LCD monitor on, flash used for 50% of the shots,
and 23 degrees centigrade). Actual performance may vary according to
operating conditions.
*2: According to the result of in-house testing.
Image
Storage Recording
1
Capacity*
700 pictures 300 min.
460 pictures 200 min.
330 pictures 120 min.
220 pictures
Movie Sound
Recording
2
Time* Time*
1340 min.
680 min.
630 min.
90 min. 570 min.
Playback
2
Time*
2
900 min.
640 min.
570 min.
500 min.
1
21