AT&T EL51209 - Manual (Page 3)

2
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
the Technical specifications page of the user's manual 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.