It is designed to provide an uninterruptible power supply (UPS) to DreamStation and System One series of CPAP / BiPAP devices. You will know that when the power goes out, the battery pack’s integrated uninterruptible power supply (UPS) will help reduce treatment disruptions. Continuously connecting the battery kit to the patient’s Philips Respironics sleep therapy device’s power supply keeps it charged and ready for travel or UPS protection. It is a light and small battery pack at just 2.25 lbs, offering easy portability so you can continue therapy away from home. It meets FAA requirements for airplane travel (90W lithium ion battery pack) and it provides more than 14 hours of battery life.¹ ¹PAP battery use – Run time test conditions: CPAP mode, pressure 10cm H2O, no heated humidification, or heated tubing.