NEC Aspire S Manual page 176

Section 4: Telephones and Optional Equipment
Charging the Spare Battery
The desktop charger of your phone is equipped with a Battery Charger for charging the optional spare bat-
tery. The battery pack can be charged either in or out of the handset.
1.
2.
Make sure the CHARGE 2 LED lights. If the LED does not light, check to see that the AC Adaptor is
plugged in, and that the battery pack is seated into the Charging Compartment. Charge the battery pack with-
out interruption for 12-15 hours.
When charging is complete, press the latch back slightly to remove the battery if it is needed. Otherwise,
leave the battery in the Charging Compartment. It will not overcharge.
Low Battery Indicator
When the battery in the handset is low and needs to be charged, you will see a "LOW" warning icon on the
display. While in standby mode, the phone will beep every 15 seconds for three minutes. In talk mode, the
tone will beep every 3 seconds as long as the conversation continues. After the conversation is completed,
the handset returns to the battery low condition in standby mode. Return the handset to the desktop charger
for charging or replace the handset battery with the spare battery.
The battery can be hot swapped while a conversation is taking place. The battery must be changed within 20
seconds, otherwise, the connection will be lost.
4-70 ◆ Section 4: Telephones and Optional Equipment
Place the spare battery into the battery slot. In order for the battery to charge correctly, the metal
contacts must face down into the charger.
If the battery is not positioned correctly, the CHARGE 2 LED will not light.
Slide the spare battery pack into the second slot in the charger until the retaining clip snaps over the
top of the pack.
Figure 4-71: CHARGING THE SPARE BATTERY
When the Low Battery Indicator Appears While
On a Call
Only the TALK key operates
Handset beeps once every 3 seconds
Action:
Complete your call as quickly as possible
Replace the battery pack within 20 seconds to
continue call
In Standby Mode
None of the buttons operate
Handset beeps every 15 seconds for 3 minutes
Cannot make or receive a call
Replace battery pack before making a call
Aspire S Hardware Manual