Unitech PT600 - Manual (Page 19)

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Remove battery pack Remove backup battery
Lithium Back up Battery
1. Refer to the procedure in previous paragraph, un-screw the backup
battery cover and as illustration above to remove the lithium battery.
2. Insert a new battery into the holder with correct orientation.
3. Put the battery cover back.
* *
Make sure to back up your data in PDT before making the
replacement the lithium back up battery.
Use nipper to pick up cover
from screw holes for
battery change.
Before
change
Lithium
battery.
Note :
backup
Your
data
first.