User's Manual

Replacing and Installing Clock Backup Battery

Note: The CR2450 lithium battery is included in the unit.

Please pull out the battery pull tab before you use the unit.

This model is equipped with a battery backup circuit that will maintain the

time and alarm time settings in the event of a temporary power

interruption. The battery backup circuit will also operate the buzzer alarm

to wake you up at the selected wake up time even if the power is out. The

battery backup circuit requires one CR2450 lithium battery, included.

When the backup battery is getting weak the Low Backup Battery

Indicator will begin flashing in the display. When you see this flashing

indicator you should replace the backup battery as soon as possible.

Purchase a replacement CR2450 battery, available wherever batteries are

sold, and follow steps 1 through 4 below to install the replacement battery.

To replace the backup battery:

IMPORTANT: When replacing the backup battery be sure to have the unit connected to the AC outlet to maintain

all of your settings, otherwise it will be necessary to reset the time and alarm time after the battery is replaced.

1. Place unit face down. Locate the battery backup compartment found on the bottom of the unit.

2. Use a Phillips screwdriver to open the battery compartment cover. Remove the cover and remove the

exhausted CR2450 battery.

3. Insert a fresh CR2450 battery in the backup battery compartment with the “+” side facing up, as illustrated.

4. Replace the battery compartment cover and screw the compartment door back in place. Do not overtighten.

Confirm that the backup battery indicator is not flashing in the display.

Note: Make sure you dispose of battery properly (see your local regulations).

WARNING: Lithium batteries can explode or cause burns if disassembled, shorted, recharged, exposed to water,

fire,or high temperatures. Do not place loose batteries in a pocket, purse, or other container containing

metalobjects, mix with used or other battery types, or store with hazardous or combustible materials. Store incool,

dry, ventilated area. Follow applicable laws and regulations for transport and disposal.

Using the iBT280

Replacing Backup Battery