3B Aer X Rechargeable Battery

The Aer X Battery powers your Aer X portable concentrator when you’re away from a power source to give you complete freedom and mobility. Batteries will recharge in the concentrator whenever it is connected to AC or DC power

With an extra single battery, you can have a backup battery in place while traveling around town or around the country. Stay active for a longer period of time with your Aer X! An extra single battery will give you up to 5.5 hours of battery life depending on flow setting.