Storing And Recharging; Device Power Source Indicators - ResMed Astral Series Clinical Manual

Power management

Storing and recharging

If the internal battery is not used, it must be recharged every six months.
It takes approximately four hours to fully recharge the internal battery from depletion; however this can
vary depending on environmental conditions and the device operating state.
To prepare the internal battery for long-term storage:
1. Check that the battery charge level is between 50 and 100%. If not, charge the device to at least
50% prior to storage.
2. Remove the power cord from the Astral.
3. Turn off the device.
To recharge the internal battery:
1. Connect the device to mains power.
2. Charging commences as indicated by a flashing battery charging indicator symbol in the Information
bar.
Notes:
• When charging a completely depleted battery, it will normally take up to 30 minutes to increase battery capacity
from 0% to 1%.
•
If the device has been stored outside the operating temperature range, an alarm message (Power fault / No
charging) may appear. You can still continue using the device, however, if the alarm persists for more than 2
hours the battery may need replacement.

Device power source indicators

Information on system and battery charge levels can be accessed in one of two ways:
1. Battery Indicator
The capacity of all connected batteries will be added to the RunTime indicator on the Information bar
of the Astral 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.
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.
Display Description
When either the external or internal battery is in use, but the device is not ventilating, the battery charge
level is displayed. The battery percentage is an average of all batteries connected to the system. Full
details of individual battery capacities can be reviewed in the Battery information page.
When either the external or internal battery is in use during ventilation, the remaining usage is displayed as
estimated by current operating conditions. The total will be the sum of all batteries connected to the
system.
When either the external or internal battery is charging, the charge battery symbol and percentage charged
is displayed.
Note: Only the Astral external and internal batteries are included in battery indicator calculations. RPSII battery levels are
not displayed.
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