Psion 2739D-7545MBW, User Manual

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Chapter 3: Getting To Know Your Omnii
Operating System
21
Psion Omnii Hand-Held Computer User Manual
3.1 Operating System
• Microsoft
®
Windows
®
Embedded CE 6.0
3.2 Battery Details
Omnii Hand-Held Computers are powered by a lithium-ion battery pack, Model ST3001.
Please see the following sections for detailed battery information:
• Installation: “Preparing the Omnii for Operation” on page 14.
• Calibration and power settings: “Power Properties” on page 88.
• Chargers and docking stations: Chapter 5: “Accessories”.
• Specifications: “Lithium-ion Smart Battery 5000 mAh (ST3001)” on page E-5.
• Contact pinout: “Omnii Battery Contacts” on page A-6.
3.2.1 Battery Safety
3.2.2 Battery Swap Time
Assuming the default power saving parameters and battery reserve level have not been altered, battery
swap time is a minimum of 4 minutes—you will not lose data if the battery is replaced within this time frame.
To protect data, the safest place to store data is on a microSD memory card or externally to the device on a
USB memory stick or on a PC. You can also save data in the “Flash Disk” partition of the file system.
Refer to “Suspend Threshold and Estimated Battery Backup” on page 89 for details about reserving
battery power for data backup purposes.
The Suspend Threshold adjustment in the Power Properties tab allows you to determine the battery capac-
ity at which the Omnii will be shut down. If left at the default value, Maximum Operating Time , the unit will
run until the battery is completely empty; the RAM is only backed up for a short period of time. If you
choose
Maximum Backup Time , the Omnii shuts off with more energy left in the battery so RAM can be
backed up for a longer period of time.
3.2.3 Charging the Battery
Batteries shipped from the factory are charged to approximately 40% of capacity. Lithium-ion battery
packs must be fully charged before use. These batteries can be charged with a variety of chargers and
docking stations. For detailed information on these accessories, please see Chapter 5: “Accessories”.
Important: Before attempting to install, use, or charge the battery pack, it is critical that you
review and follow the important safety guidelines in the quick reference guide
entitled the Omnii Hand-Held Computer Regulatory & Warranty Guide,
PN 8000191.
Important: If your Omnii fails to power up, consider the following troubleshooting options:
The battery may be overheated (>60C°), a non-Psion battery may be installed, or
the battery may have fallen below the configured Suspend Threshold. See “Sus-
pend Threshold and Estimated Battery Backup” on page 89 for details.
To switch on the hand-held, you will need to replace the overheated battery.
However, if you supply AC power to the Omnii with a battery that falls below the
configured Suspend Threshold, the unit will switch on.