This has a 5 year warranty. Oxygo NEXT / Inogen G5 Oxygen Concentrator comes with the 16 cel Large battery and a TRUE WARRANTY. Flow settings 1 – 6, Can be charged at home or in the car while in use. Comes with a 16 cel battery, Carry Bag, AC power supply and DC power cable. Buy Local don't get burned. Ask us what a true warranty is. Come see and touch the units in our show room. I am a manufacturers dealer and I carry every brand: Come see what is NEW and get a brochure. I also will have used as well. We Carry All types and brands of oxygen concentrator and Traveling Oxygen Concentrators. We rent for $190.00 a week. Call for a brochure. All my PORTABLE Oxygen Concentrators are Airline Approved! These are great for oxygen patients who travel, awesome on cruises or just like the ease of getting around. Deseret Medical is a trusted and local home medical equipment company with over 20 years in the business. We have more Medical Equipment for sale and rent so call or come by our business show room between 9-5 Mon-Fri. 560 W Fine Drive Salt Lake City (3710 So.) West of I-15 between 3300 So. & 3900 So. 801-270-8440 Buy local. Deseret Medical the right choice! After hours and weekends call 801-381-6613. I live in Vineyard so if that is closer for you we can do it in that area. we will also deliver and ship.