Enjoy unmatched convenience with the Lifestyle Rhythm P2 DC power supply, your trusty charge buddy for the Rhythm P2 portable oxygen concentrator. This handy power supply makes sure your P2 battery stays charged, even as you're on the go. Simply plug it into a 12V outlet in your car, truck, RV, or boat, and you're good to go. With this fantastic feature that allows you to recharge your Lifestyle Rhythm P2 while traveling, you can embark on your adventures without a hitch. Most cars come equipped with a 12V outlet or a cigarette lighter socket, which means you can easily power your Lifestyle Rhythm P2 portable oxygen concentrator whether you're popping into the supermarket, catching up with friends, or heading to a doctor's appointment. Plus, even while the DC power supply is drawing power from your vehicle's battery, you can keep using your Lifestyle Rhythm P2 and charge it at the same time. While this might take a little longer to charge your batteries, knowing you can top them off while you travel gives you that extra peace of mind to enjoy a more adventurous lifestyle.