AirSep FreeStyle Service Manual page 21

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 (23 C) +/- 2C.
Depending upon the temperature of the AirBelt battery, it can take several minutes for
the charging cycle to start after connecting to power. This is a normal condition and is
intended for safe charging.
AirBelt does not need to be fully discharged before recharging. It is recommended to
charge it after each use.
If the AirBelt power supply remains connected when it is fully charged, the four LEDs
will turn off within ½ hour.
AirSep Corp. — FreeStyle Service Manual
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