The Lifestyle Rhythm P2 Rechargeable Battery is designed to provide reliable portable power for compatible P2 series portable concentrators. Lightweight, compact, and travel friendly, this lithium-ion battery is ideal for everyday mobility, backup use, commuting, and travel. Compatible with Lifestyle Rhythm P2, P2-E6, and P2-E7 portable concentrator models, the battery delivers dependable performance with up to 5.4 hours of runtime depending on concentrator model, flow setting, and operating conditions. The rechargeable lithium-ion design supports convenient everyday use and recharges in approximately 2.5–4 hours depending on charging method and battery condition. The battery is compatible with standard AC charging, vehicle charging options, and external charging accessories for added flexibility. Its lightweight portable construction makes it easy to carry while traveling, working, or moving throughout daily activities. Designed for convenience and mobility, the Lifestyle Rhythm P2 Battery helps keep compatible concentrators powered wherever you go. Please verify concentrator model compatibility before purchase. Runtime may vary depending on device settings and usage conditions.