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Sub Display
a b c d e
a
Signal Strength
(more bars
indicate stronger signal)
b
Wake-up Alarm/Alarm Set
c
New Message
d
Manner Profile Set; and On for Voice Call in
Vibration Set
e
Battery Strong
Battery Moderate
Battery Low
Battery Weak (Charge Now)
Battery & Charger
Before Using Battery or
Charger
Charge battery before first use of 820SC or after
periods of disuse.
Charging Battery
• Long periods of disuse may affect battery's ability
to hold a full charge.
• 820SC uses a lithium-ion battery; charge battery
in any state without damaging its ability to hold a
charge.
• Do not charge battery under the following
conditions:
In ambient temperatures beyond 5°C - 40°C
In high levels of humidity, vibration or dust
Near a radio receiver (May cause feedback)
• 820SC or Charger may warm while charging. This
is normal, however, should they become very hot
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