A new battery must be charged for at least 5 hours before being placed into service.

The manufacturer recommends that the ventilator’s batteries be fully charged before ventilating a patient. If the batteries are not fully charged and AC power fails, always pay close attention to the level of battery charge.

The ventilator charges the battery whenever the ventilator is connected to AC, with or without the ventilator switched on. The Battery (charged) LED flashes to show that the battery is being charged.