Internal Backup Battery - Honeywell Dolphin 9900 User Manual

Internal Backup Battery

Located inside the terminal, the backup battery is a 3.6 Volt nickel metal hydride (NiMH) battery.
The internal backup battery prevents the terminal from being reset if you need to remove and replace the
main battery pack. It retains RAM data and allows the real-time clock to remain operational for up to 30
minutes when the main battery pack is removed. If the terminal is left without the main battery pack for
more than 30 minutes, the internal backup battery needs to be recharged to function according to its
specifications.
Note: Data and programs stored in Flash memory are not lost even if the internal backup battery fails. However, you
must reset the real-time clock; see
Charging
The internal backup battery is powered by the main battery pack. Therefore, charging the internal backup
battery requires that the main battery pack be installed in the terminal and the terminal be connected to
a charging device.
The internal backup battery must be fully charged before using the terminal for the first time. The initial
charge cycle takes approximately eight hours. After that, if the internal backup battery becomes fully
discharged of power, it requires a minimum of 10 hours of charging time to function normally.
Guidelines for Use
Follow these guidelines to maximize the life of the Dolphin's internal backup battery:
• Keep a charged Li-Ion battery pack in the Dolphin terminal. The internal battery prematurely discharges
if there is not at least a partially charged battery in the terminal.
• Keep the Dolphin terminal connected to power when the terminal is not in use.
Dolphin® 9900 Mobile Computer User's
Guide–Preliminary
Set the Time and Date on page
Rev (a) 02
3/5/08
2-3.
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