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Battery Run Time Estimate Screen
Double press the SET button to display a bar graph of run time. The time for each
battery connected will be calculated, according to the ventilator settings, and shown
on the screen.
This is an indication of the battery state of charge not its health. For most accurate
result, run the ventilator on battery power for 5 minutes prior to this check.
The results shown assume that the connected battery is in good serviceable
condition. It is not possible to take into account the state of health of the battery. The
only way to determine the state of health of the battery is to perform a run time test.
When checking expected battery run time the ventilator must NOT be
connected to the mains.
Low Battery Alarm
Low battery = alarm sound, and on
screen message, “Battery Power Running
Low” and flashing red battery icon.
Flat Battery = alarm sound and on-
screen message “Battery Power Exhausted.
About to switch off. Connect to Mains Power Now” and flashing red battery icon.
Critical battery = 10 minutes after battery exhausted warning, alarm sound
continuous tone and auto power off.
After auto power off, the constant alarm will continue until the Mute is pressed.
Charging the batteries
Internal and external batteries are automatically charged when the ventilator is
connected to the mains supply. Charging takes approximately 8 - 11 hours
depending on ventilator settings.
Charging priority is given to the internal battery. Charging of the external battery
if connected will begin after the internal battery is charged. When charging is
complete the batteries will be monitored to maintain charge.
