ResMed Astral User Manual page 5

Accessing battery information via the Astral user interface
Information on system and battery charge levels can be accessed in one of two ways.
1. Battery indicator
The capacity of the External Battery will be added to the Run Time indicator on the Information bar
of the Astral user interface (this may take a couple of minutes). The total will be the sum of the
Astral internal battery plus either one or two external batteries.
Note: Under normal operating conditions, the ventilator will display total system:
• State of charge as a percentage when in ventilation standby mode or connected to mains
power.
• Estimated remaining run time while delivering therapy.
2. Battery information
The battery information can be accessed from the Battery sub-menu on the Information page of
the Astral user interface. This menu has two tabs:
Charge—displays the current charge level (0-100%) for any batteries currently detected by the
system, as well as the total system charge.
Maintenance—displays the full charge capacity and the charge cycle count for any batteries
currently detected by the system.
Regularly check the charge level of the external battery. It is recommended to replace the battery
at 400 charge cycles.
Refer to the Astral User Guide for further information.
Charging the External Battery
The External Battery is supplied partially charged.
Ensure the External Battery is fully charged before using it to power the Astral device. The External
Battery can be used and recharged while connected to the Astral device (refer to the Using and
recharging the External Battery section in this guide).
Charging takes less than 6 hours from 0% battery capacity to greater than 95%.
WARNING
• Only use an Astral 90W AC power supply unit to charge the External Battery.
• As the External Battery ages, the available capacity decreases. When the remaining battery
capacity is getting low, do not rely on the External Battery as the primary supply.
• The External Battery cannot be charged from DC mains.
Refer to illustration B.
1. Connect the AC power supply cable to the DC input port of the External Battery.
2. Connect the other end of the AC power supply cable into the mains power outlet. Charging is
indicated by (refer to the Indicators section in this guide).
Note: If required, the External Battery DC output cable can be connected into the DC input port
of the Astral device while the External Battery is charging. The Astral device will then continue to
operate using mains power.
3. A fully charged External Battery is indicated by . To discontinue charging, disconnect the External
Battery from the AC power cable.
Powering on the External Battery
To power on the External Battery:
• Connect it to an Astral device that is powered on or;
• Press .
Note: The External Battery automatically powers off after 5 minutes of inactivity.
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