Nortel 4065r User Manual

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To maintain optimum operating time, discharge the batteries from 
time to time by leaving the handset off the charger and switched on, 
until it switches itself off. Do not use any other method to discharge 
the batteries.

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Extreme temperatures influence the charging capability of the 
batteries.

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Empty batteries require approximately five hours to fully charge.

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When batteries are fully charged, the handset has approximately 8 
hours of talk time or approximately 100 hours of standby time.

The handset display screen shows the battery charge status. When the 
battery capacity is almost exhausted, the battery symbol flashes in the 
display. If the battery warning tone is switched on, the battery warning 
tone sounds, see “Configuring Attention Tones” on page 65.

 

If you are 

making a call when this occurs, approximately three to five minutes of talk 
time remains. If you are not making a call and the handset is not in the 
charging station, 

Battery empty appears in the display. You cannot make 

a telephone call while this message is displayed.

Note: Batteries with an unknown charging status fully charge in 
approximately 14 hours.

See Table 1 for battery charge display definitions.

Note: When the battery is replaced, the charge level is not correctly 
displayed until a whole charge and discharge cycle completes. 

80 - 100 % charged

60 - 80 % charged

40 - 60 % charged

20 - 40 % charged

0 - 20 % charged

(frame flashes) batteries are empty: alert tone has been given.