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User's Manual Part 1

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Chapter 2: Basic Checkout
The Backup Battery
12 WORKABOUT PRO Hand-Held Computer With Windows CE 5.0 User Manual
2.1.2 The Backup Battery
To preserve data stored in your WORKABOUT PRO while you swap the main
battery, the unit is equipped with a backup battery
–a replaceable, rechargeable
Lithium-Ion backup battery that can be ordered through Psion Teklogix. The backup
battery will supply 5 minutes of continuous power while you install a charged,
main battery.
The backup battery is trickle charged from the main battery. Provided that the main
battery contains power, the backup battery will maintain a charge whether the
WORKABOUT PRO is switched on or off, in a docking station or in a cradle. Even
when the main battery reaches its Suspend Threshold (refer to “Suspend Threshold”
on page 100) and the hand-held shuts down, the backup battery will continue to
draw a trickle charge from the main battery to protect the data stored in the unit until
a charged main battery is installed.
Note: The backup battery takes approximately 3 to 4 hours to fully charge from
a fully discharged (flat) state, generally the same amount of time it takes
to fully charge the main battery. While you can continue to use the
WORKABOUT PRO, replacing the main battery while the backup battery
is not fully charged is not recommended because you risk losing the data
stored on the unit.
2.2 Turning The WORKABOUT PRO On And Off
2.2.1 Installing The Battery And Switching The Unit On
Important: Press [FN/BLUE] [ENTER] to turn off the hand-held before
opening the battery cover on your WORKABOUT PRO. When the
battery cover is removed, a power-off switch is automatically acti-
vated switching the unit off; if the battery cover is opened while
the hand-held is still powered on, the unit may reboot.
• To unlock the battery cover, turn the left-hand battery fastener to the left,
and turn the right-hand battery fastener to the right.
• Remove the battery cover.
• Ensure that the ON/OFF switch in the battery compartment is set to ON
before inserting the battery.