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Chapter 2: Basic Checkout
The Backup Battery
12 WORKABOUT PRO Hand-Held Computer With Windows Mobile 6 Classic & Professional 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 an internal 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 a cradle. Even
when the main battery reaches its Suspend Threshold (refer to “Suspend Threshold”
on page 125) 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.
2.1.2.1 Backup Battery Gas Gauge
To safely replace the main battery and preserve the data stored in the
WORKABOUT PRO, the backup battery should contain a minimum of 80% of its
charge capacity. The Battery tab in the Power applet displays a gas gauge to indicate
the charge remaining in the backup battery from 0 to 100%. To check the backup
battery capacity:
• Tap on Start>Settings and then tap on System tab.
• Tap on the Power icon.
For more details about replacing batteries, refer to “Removing And Installing The
Battery Pack” on page 34 and “Safely Swapping The Main Battery” on page 35.