Sony DVCAM DSR-200P Operating Instructions Manual page 79

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 lithium battery down once and pull it out from the holder.
( 3) Install the lithium battery with the positive (+) side facing out. Close the lid.
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DSR-200P CE 3-858-622-12(1). E