Using a portable oxygen concentrator is a key element to helping you live an active, healthy lifestyle. Make sure you keep your POC delivering the right dosage for you all day long while you travel, enjoy your favorite activity and spend time with your family out-and-about. Replacement batteries, including 8-cell and 16-cell, and specialty batteries, will make sure your activities stay on track. . . . Extra wall-based battery chargers and car chargers are available to make sure your batteries are always properly charged. Our friendly and knowledgeable staff are always available to help you obtain the right type and amount of batteries to keep you active and mobile. Don’t see the battery you need for your portable oxygen concentrator? Call us as at 833-POC4YOU or email us at support@Go2POC.com as we have access to most current and past POC models.