The AirSep External Batteries are the newest product from the line that created one of the smallest oxygen concentrators on the market and is compatible with the Focus1, Freestyle 32, and Freestyle 52. The batteries are small and lightweight and include a wearable belt clip that will make them inconspicuous underneath your shirt or jacket. The batteries can be charged at the same time in the AirSep Charging Dock separate from the unit. They are an excellent alternative for those who want more battery life for their lightweight portable unit.
Each battery only takes 5 hours to recharge from 0-100%. One battery will last for 3.5 hours on a setting of 2 with the AirSep Focus. With the battery, the Freestyle can give you up to 6 hours on a setting of 1 and 5 hours on a setting of 2.5. The Freestyle 5 can give you up to 4 hours on the setting of 1 and 2 hours on the setting of 5. These batteries will also inform you immediately when the charge is getting low so that you may have time to go to a power source and charge the battery or run your machine on its internal battery. The indicator light on its side will visually show you how much charge is left.
Plug it into the concentrator, and you are ready to add more hours to your day out.