Symbol PTC-2124, User Manual

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PTC-2124 User’s Guide 49
Chapter
12
Maintaining the bridge battery
Recharging the bridge battery
The PTC-2124 has an internal rechargeable nickel-
cadmium bridge battery that protects data in the
PTC’s memory when the main battery pack runs out
of power or is being replaced. While a charged battery
pack is in the PTC, the bridge battery is inactive.
If bridge battery power is low, the
Batt LED blinks red, and the PTC
sounds five beeps.
The bridge battery is intended to provide power to the
PTC only when the battery pack is being replaced.
Leaving a PTC without a battery pack for longer than
necessary to replace it uses up power in the bridge
battery.
Under normal operating conditions, the bridge battery
maintains its charge from the main battery pack.
However, when you receive a new PTC or if you leave
the main battery pack out of the PTC for an extended
period of time, you need to charge the bridge battery.
To do this, make sure the main battery pack is
properly installed in the PTC; then, plug the AC
adapter into the unit’s power jack and the AC power
cord into an electrical outlet. The bridge battery will
be charged in approximately 5 hours.
The PTC’s ability to support RAM is
reduced if the PTC is not suspended
before the battery pack is removed. A fully charged bridge battery can safely back up the
PTC’s memory for approximately 4 to 5 hours with the
PTC suspended and main battery pack removed.
If the PTC will be stored for longer than 30 days, keep
the main battery pack installed and place the PTC
into ship/storage mode, following the instructions in
the section titled "Storing/shipping the PTC" on page
54.