Connecting To An External Dc Power Source - ResMed Astral 100 Series User Manual

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.

Connecting to an external DC power source

CAUTION
•
When using a car auxiliary adapter, start the car before plugging in the device's DC adapter.
•
If the external DC power source drops to below 11V, the Astral will switch to internal battery.
•
When the device is turned off while connected to the DC adapter, it will continue to draw
power from the external DC power source.
To connect DC power:
1. Connect the DC plug of the external DC power supply unit to the rear of the device.
2. Plug the other end of the power cord into the power outlet.
Accessories
English 43