AirSep MN123-1 F - Manual (Page 18)

MN123-1 rev F 14
Charging of the battery may take several minutes after connecting the power to initiate, depending on the battery’s
internal operating temperature. This is a normal condition and is intended for safe battery charging. This circumstance is
more likely when the battery has been fully discharged.
If the device power supply remains connected when the battery is fully charged, the four LEDs will turn off within
approximately 1 hour.
For oxygen concentrators equipped with batteries:
The Oxygen Concentrator battery does not need to be fully discharged before recharging. It is recommended to charge
the Oxygen Concentrator battery after each use.
Lithium batteries may permanently lose capacity when exposed to extremely hot temperatures with the batteries fully
charged or completely depleted. For extended storage, it is recommended that batteries be charged 25 to 50% and
remain within a temperature range of 73
°F ± 35°F (23°C ± 2°C).
Figure 7: Internal Battery Charging Figure 8: AirBelt Battery Charging
 The FreeStyle’s internal battery will completely recharge from its fully depleted state in approximately 3 ½ hours, whether or not the
unit is in use on Universal AC/DC power .
 While charging a fully discharged battery, initially the 25% LED will start blinking rapidly for a few minutes, then start to blink at a
slower rate every (1/2 second).
 The LED will continue to blink until 25% capacity is reached. The LED will then turn solid.
 Each of the four LEDs, 25% -100%, will blink as stated above, then turn solid when they reach their capacity.
 When all LEDs illuminate solid, the battery is fully charged and the LEDs will remain solid for a period of time, then all four LEDs will
turn off.