Keep your Rhythm Healthcare portable concentrator powered and ready with this complete charging accessory kit. Designed for compatible P2 series concentrators, the kit includes 1 rechargeable lithium-ion battery, 1 external battery charger, and an AC power adapter with power cord. The external charger allows convenient charging separately from the concentrator, giving you greater flexibility for daily use, travel, backup power, and extended portability. The lightweight and compact design makes it easy to carry while traveling or moving between home, office, and vehicle use. The rechargeable battery delivers up to 5.4 hours of power depending on concentrator flow settings and operating conditions. With a secure snap-in connection and recharge time of approximately 2.5–4 hours, the system is designed for reliable everyday charging performance. The universal AC input (100–240V) supports convenient charging at home or during international travel. Compatible with Rhythm Healthcare P2, P2-E6, and P2-E7 portable concentrator models.