SoftBank 820P User Manual page 40

Battery Time
1
! Using handset in poor conditions may shorten battery time.
• Extreme temperatures
• Impaired handset, battery or Charging Terminals
• Signal is weak/handset is out-of-range
• Playing music or using S! Appli, etc.
! Extending battery time
Example:
• Select shorter display backlight time (ZP.16-3).
• Select for Key Tone Volume (ZP.16-3) and
Silent
or shorter time for Keypad Backlight (ZP.16-7).
When Battery Runs Out
! Unless a Call is in Progress
A message appears and warning tone sounds. Warning tone
ends automatically after two minutes; press
to cancel warning tone manually. Charge or replace battery.
• If Manner mode is active/Warning Tone
sounds.
• When 820P is closed, press
warning tone.
! During a Call
A message appears and warning tone sounds via Earpiece or
Speaker. After 90 seconds, call ends and 820P shuts down in
30 seconds. Charge or replace battery.
1-12
OFF
, or
L S K
, nothing
Off
(Side Key) to cancel
+
Battery Strength Indicator
! Battery Strength indicator changes as remaining usage time
decreases. Charge or replace battery when battery level is low
(ZP.1-8) or a message appears on Display.
Battery Voltage
Operating
Voltage
Level 3
Approx. 70%
Remaining Strength (at 25°C)
Low battery warning message
appears. Charge or replace
battery immediately.
Red
Level 2 Level 1 Level 0
Approx.20% Approx.10%
Operating Time