Let's be honest, battery life is likely one of the most critical features when selecting a portable oxygen concentrator. With the Rhythm P2-S4 model, you have the flexibility to choose from three distinct battery sizes tailored to your specific needs. If you're aiming for the lightest overall setup, the single battery is the optimal choice. For those seeking a balance between weight and battery life, the double battery serves as an excellent compromise. If you prioritize extended operation away from a power source, the triple battery is the ideal solution.

The P2-S4 single battery provides up to 2.5 hours on setting 1, the double configuration offers up to 4.8 hours, while the triple variant delivers up to 7.2 hours of therapy. When recharging, the AC power supply connects to any standard US wall outlet, and the DC power supply charges through your vehicle's cigarette lighter outlet. Both accessories are included with your purchase, and an external battery charger is available for charging additional batteries separately.