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charging. If the battery is not inserted, the external power
indicator LED will flash (short flash approx. every 4 sec).
When the Monitor is running on battery power, a battery
icon appears in LCD area 3 (toggling with the time indicator)
indicating the charge status.
During battery-only operation, the yellow battery power
indicator LED (17) will light. When the battery becomes
discharged beyond the low battery threshold, the indicator
will begin to flash, and the Monitor will sound warning beeps
every 30 seconds. At this point, the Monitor should be
connected to an AC outlet to recharge the battery. If the
Monitor continues to be used without charging the battery,
the message WARNING: THE BATTERY IS TOO LOW FOR
MONITOR TO FUNCTION. TURN MONITOR OFF
appears. The Monitor shuts down all functions until it is
turned off and the battery is recharged or replaced. To run
the Monitor on AC power, it must be powered off and then
on again.
Battery charging will take place as long as the Monitor
remains connected to an external AC power source. A
battery that is fully discharged can be fully recharged in 1
hour 50 minutes when the Monitor is switched off or 8 hours
if the Monitor is switched on.
Notes
• To prolong the life of the battery, keep the Monitor
connected to an AC outlet whenever possible. NEVER
allow the battery to become completely discharged. A
fully charged battery will power the Monitor for
approximately 2 hours and should survive between 200
and 500 charge/discharge cycles. When it is necessary
to replace the battery, refer to the “Compatibility Table
and Reorder Codes” listed in Appendix D. To ensure full
charge cycles, replace only with a recommended
battery. If the Monitor is to be stored for some time, first
charge the battery and then remove it and store it
separately from the Monitor.
• For continued safety, use only a power cord of listed
type SJT, three-conductor, min. No. 18 AWG, terminated
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