Juniper Systems Archer Reference Guide - Manual (Page 30)

Chapter 3: Using the Hardware
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beneath the door latch and slide the door latch to
the right.
5. Remove the battery door. Note:
The door may make a noise
while it is being removed,
caused by the door scraping
against the battery.
The sound
is normal; no damage is done
when you hear this sound.
6. Remove the old battery pack.
7. Make sure the battery contacts
of the charged battery pack are
clean and dry.
8. Insert the charged battery pack,
lining up the battery contacts
with the Field PC contacts.
9. Insert the tabs on the bottom of
the battery door into the case
slots.
10. Close the battery door, making
sure the door latch is in the unlock
position as the door meets the
case.