14 - ENG PN MN232 C | User ManualFreeStyle ComfortNote: If the battery is in the process of charging,a plug indicator will show instead of the chargepercentage remaining.To check the battery charge when it is not installedin the FreeStyle Comfort, lay it flat and press theTEST button. The battery gauge indicator lights(25-100%) will illuminate to the right of the TESTbutton to indicate the level of the battery packcharge.INITIAL CHARGINGThe new battery supplied with your FreeStyleComfort is only partially charged when it is shippedfrom the factory. Before using for the first time, youshould fully charge the battery pack using eitherAC or DC power.GENERAL CHARGING INFORMATIONThe FreeStyle Comfort will recharge the batterypack anytime it is installed in the concentrator andthe concentrator is connected to an external AC orDC power source (except on an airplane).Battery is fully charged when it displays 100%.Alternately, the battery pack may be charged usingthe optional desktop charger.BATTERY OPERATING DURATIONWhen external AC or DC power is disconnected,the concentrator will automatically switch over tousing battery power if a charged battery is installed.The table below shows the typical durations fora new battery pack. Battery pack durations willremain constant regardless of your breath rate.PulseSettingSingle (8-cell)Battery DurationDouble (16-cell)Battery Duration1 up to 8 hours up to 16 hours2 up to 4.25 hours up to 8.5 hours3 up to 3 hours up to 6 hours4 up to 2.25 hours up to 4.5 hours5 up to 2 hours up to 4 hoursTYPICAL BATTERY RECHARGE TIMEThe typical time to fully recharge your battery packfrom a fully discharged battery is 3.5 hours for asingle battery, and 6.0 hours for a double battery.Note: The battery may not initially start charging ifthe battery pack has been fully depleted.BATTERY SERVICE LIFEThe FreeStyle Comfort batteries are designed tolast 300 charge/discharge cycles.