Unitech PA962 - Manual (Page 5)

5 Product Reference Guide
NOTICE
This unit is equipped with a battery pack and backup battery. It is possible that the Unitech
PA962 may not power-on due to battery discharge as a result of storage.
In the above situation, plug the PA962 to the RS232 or USB cable which is with DC in port or
put the unit into the Unitech PA960/PA962 Cradle (with 12V/2A AC-DC adapter), and recharge
the unit for 16 hours in order to fully charge its backup battery.
The backup battery will charge from external power or the main battery (if the main battery still
has enough power to turn on). In the event the main battery is fully charged, refrain from using
the PA962 for 16 hours in order for the main battery to fully charge the backup battery.
Backing-up data by backup battery only without the main battery installed in battery compart-
ment may take as long as 6 hours. Therefore, in order to prevent data protection failure due to
backup battery failure, do not leave the PA962 without the rechargeable battery pack installed,
or without connection to AC power for an extended period of time.