PSC Falcon PT40 Product Reference Manual page 74

Falcon PT40 Batteries
If the main battery is not recharged before it reaches the low-power shutdown
point, it continues to discharge, and the PT40 turns off automatically. Even
then, the PT40 continues to save data, because of the backup battery. It is
important, however, to recharge the main battery at this time to avoid running
down the backup battery and losing data.
Backup Battery
When the backup battery is low, or after inserting a main battery if the PT40
has been stored for a long time without charging, the following message
appears on the display:
The backup battery begins recharging as soon as a charged main battery is
inserted. The message should disappear in less than 30 minutes. After the mes-
sage disappears, there will be at least 2 hours of backup power available for the
RAM and clock. It will take about 20 hours to fully charge a completely dis-
charged backup battery.
Do not remove the main battery while the message is on the display, or data may be
lost. Charge the main battery inside the PT40 while using the Dock or serial cable
connected to a power source.
If the message does not disappear or occurs other than at initial use after pro-
longed storage, then the backup battery may no longer be accepting a charge
and should be replaced by an authorized PSC Service Center.
A-8
PLEASE WAIT
CHARGING
BACKUP BATTERY
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Falcon PT40