Want to keep your oxygen therapy running without a hitch? Check out the Lifestyle Rhythm P2-S4 AC Power Supply. This little accessory is a game changer for making sure your P2-S4 portable oxygen concentrator is always running. Just plug it in and watch that Rhythm P2-S4 battery get recharged in no time, giving you peace of mind while you go about your day or catch some Z's at night. Using the AC power supply couldn't be easier—just plug it into any standard wall outlet. Charging your Lifestyle Rhythm P2-S4 portable oxygen concentrator is as simple as charging your phone. One fantastic feature to highlight is that you can charge your device while using it at any oxygen setting. When you plug it into a 110V wall outlet, your battery can be fully charged in as little as 4 hours, even if you're using the device at the same time. This convenience makes the AC power supply a must-have in your oxygen therapy routine, ensuring you're always powered up and ready to go whenever you need it.