User manual
Chapter 2: Basic Operation
Switching Omnii On and Off
Psion Teklogix Omnii XT10 Hand-Held Computer User Manual 15
Assuming the default power saving parameters and battery reserve level have not been al-
tered, a battery can be removed for up to 5 minutes without losing data. After 5 minutes the 
terminal may reboot.
Removing the Battery Pack
• If your unit is equipped with a hand or shoulder strap, unhook it from the base of 
the battery.
• Press the two latch buttons at the sides of the compartment simultaneously, and slide the 
battery out.
Installing the Battery Pack
• Slide the charged battery with the contoured plastic facing you into the unit with the 
contacts matching position and the guide tabs moving into the corresponding slots at the 
base of the compartment. Click both sides of the battery into place.
• If your computer is equipped with a hand or shoulder strap, re-attach the clip to the slot 
at the base of the battery.
Switch the unit on (see “Switching Omnii On and Off” on page 15).
2.3 Switching Omnii On and Off
Follow the instructions below for your Omnii.
Switching Omnii On
• Press and hold down the [ENTER/Power] key for at least one second. 
When the unit is turned off, normally it automatically enters a power-saving, “suspend” 
state. When Omnii is switched on from the suspend state, operation resumes within a few 
seconds in the screen in which you were working prior to turning the computer off.
Important: If your Omnii fails to power up, consider the following troubleshooting 
options:
The battery may be overheated (>60C°), a non-Psion Teklogix battery may 
be installed, or the battery may have fallen below the configured Suspend 
Threshold. See “Suspend Threshold and Estimated Battery Backup” on 
page 110 for details.
To switch on the hand-held, you will need to replace the overheated battery.
However, if you supply AC power to Omnii with a battery that falls below 
the configured Suspend Threshold, the unit will
 switch on.










