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A floating battery level indicates that the battery is being recharged.
If battery indicator LED turns on, it indicates that the battery is connected;
the LED going off indicates that the battery is disconnected or run out of; the
LED which keeps flashing means that the battery is being recharged.
Caution:
1. When the ventilator is being used in an ambulance, the battery shall not
be recharged. The battery can be recharged only when a power adapter
is being used.
2. To ensure normal operation of the battery, it is recommended to
recharge and discharge it once every 6 months.