Sony handycam CCD-TR91 Operating Manual page 10

Your camcorder is supplied with a lithium battery and two size AA (R6) batteries. The lithium battery is
for the camcorder and the size AA (R6) batteries are for the Remote Commander.
Inserting the Lithium Battery Into the Camcorder
The lithium battery has a positive (+) side and a negative (-) side as illustrated below. Be sure to install
the lithium battery with the positive side facing out.
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Inserting the Lithium Battery
To activate the clock, you must insert a lithium battery.
(1) Open the lid of the lithium battery compartment on the bottom of the camcorder. (2) Install the lithium
battery with the positive (+) side facing out. (3) Close the lid.
To Remove the Lithium Battery
Push the battery upward once and pull it out from the holder.
When replacing the lithium battery, keep the battery pack or other power source attached. Otherwise,
you will need to reset the date and time.
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