Make sure you always have a backup battery source with this AirSep External Power Cartridge for Focus and FreeStyle 3/5. This compact battery weighs about 1 lb. and comes with a battery clip, so it’s extremely portable. It can be charged separately from the concentrator, going from 0 to 100 percent charge in under five hours (external battery charger sold separately). An indicator light will turn on when the battery begins to run low.
This power cartridge is compatble with the AirSep Focus, FreeStyle and FreeStyle 5 oxygen concentrators:
- AirSep Focus: it lasts about 3.5 hours on a setting of 2
- AirSep FreeStyle 3: about 10 hours on setting 1, and 5 hours on 3
- AirSep FreeStyle 5, about 7 hours on 1 and 2 hours on 5
Please note the charger is not included.