AT&T TL90078 Telephone User Manual


 
Getting started
Battery installation & charging
Install the battery as shown on the next page. Once you have
installed the battery, the screen indicates the battery status (see
table below). If necessary, place the handset in the telephone
base or charger to charge the battery. For best performance,
keep the handset in the charger when not in use. The battery is
fully charged after 16 hours of continuous charging. See the table
on page 37 for battery operating times.
If the screen is blank, you need to charge the handset without
interruption for at least 10 minutes to give the handset enough
charge to use the telephone for a short time. The screen shows
LOW BATTERY and the backlight is off until you have charged
the battery without interruption for at least one hour. The
following table summarizes the battery charge indicators and
actions to take.
Battery indicators Battery status Action
The screen is
blank.
Battery has no
charge and the
handset cannot be
used.
Charge without
interruption until the
screen shows LOW
BATTERY (at least 10
minutes).
The screen
shows PLACE IN
CHARGER and
flashes.
Battery has very
little charge and
the handset cannot
be used.
Charge without
interruption until the
screen shows LOW
BATTERY (at least
four minutes).
The screen shows
LOW BATTERY and
flashes.
Battery has enough
charge to be used
for a short time.
Charge without
interruption until
the screen shows
HANDSET X (at least
one hour).
The screen shows
HANDSET X.
Battery is charged. To keep the battery
charged, place it in
the telephone base
or charger when not
in use.
NOTE: If you are on a phone call in low battery mode, you hear four short
beeps every minute.
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