Sony CCD-TR910 - Manual (Page 56)

Changing the lithium battery in the camcorder
Your camcorder is supplied with a lithium battery installed. When the battery becomes
weak or dead, the indicator flashes in the viewfinder for about 5 seconds when you
set the POWER switch to CAMERA. In this case,
replace the battery with a Sony
CR2025 lithium battery. Use of any other battery may present a risk of fire or
explosion.
The lithium battery for the camcorder lasts for about 1 year under normal operation.
(The lithium battery that comes installed at the factory may not last 1 year.)
Note on lithium battery
The lithium battery has positive (+) side and negative (-) side as illustrated. Be sure to
insert the lithium battery with the positive side facing out.
WARNING
The battery may explode if mistreated. Do not recharge, disassemble, or dispose of in
fire.
Caution
Keep the lithium battery out of the reach of children. Should the battery be
swallowed, consult a doctor immediately.
Changing the lithium battery
When replacing the lithium battery, keep the battery pack or other power source
attached. Otherwise, you will need to reset the date, time and other items in the menu
system retained by the lithium battery.
(1) Open the lid of the lithium battery compartment.
(2) Push the battery down once and pull it out from the holder.
(3) Install the lithium battery with the positive (+) side facing out. Close the lid.