Make sure that your portable oxygen concentrator is always ready to go with this ultra-portable AirSep DC Auto Adapter from CPAP Man. Designed to work with AirSep Focus and FreeStyle machines, this auto adapter powers your concentrator via any DC power source, including the port in your car, RV or boat. Use this convenient AirSep backup cord while you’re traveling or keep one in your car just in case. It’s also ideal for those who live in areas where power outages are frequent and can be used as an emergency power supply, if necessary. The durable, lightweight construction means you can toss it into your bag or luggage while you head off for trips.