TRAKKER Antares 2420 and 2425 Hand-Held Terminal User’s Manual
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Nugget
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Backup Battery
The backup battery is a NiCad battery that is designed to back up all memory and the
real-time clock while you remove a discharged main battery pack and insert a charged
battery pack. You can remove and replace the backup battery if it will no longer hold a
charge, or if the battery is dead.
The main battery pack charges the backup battery when required with the terminal turned
on or off. You should keep a charged main battery pack installed in the terminal to
maximize the backup battery’s life.
If you turn off the terminal and do not use it, the backup battery will provide backup
battery power for:
• A maximum of 1 month if a fully-charged main battery pack is installed.
• A maximum of 3 days if a main battery pack is not installed.
The backup battery power depends on how much power is left in the main battery pack
and the backup battery when you turn off the terminal. If the backup battery is still
providing backup power when you turn the terminal back on, the terminal resumes
exactly where it was when you turned it off, or restarts your application.
If you plan to store the terminal for a long period of time, insert a fully charged main
battery pack to maximize battery life. Store the terminal in a warm (office) area to make
sure the backup battery continues to charge.
Note: If the Resume Execution command is allowed, the terminal will resume the
application when you turn on the terminal. Otherwise, the terminal boots and the
application restarts. For help, see “Resume Execution” in Chapter 9.
Charging the Backup Battery
The main battery pack charges the backup battery when required with the terminal turned
on or off. The terminal continuously monitors the backup battery voltage level and
charges the backup battery for a fixed duration of time whenever the voltage level gets
low. If the main battery pack is low or discharged, it will not be able to charge the
backup battery.
There are two ways to find out if the backup battery charge is low:
• The Battery icon is blinking on the top line of the screen.
• Check the status of the backup battery using the Battery Status diagnostic test. For
help, see Chapter 7, “Running Diagnostics.”
Note: The backup battery charger operates between 32°F and 104°F (0°C and 40°C). If
you are using the terminal in an environment that is outside this temperature range, the
backup battery will not charge. Move the terminal to a warmer environment to charge
the backup battery.
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