Juniper Systems Mesa User Guide - Manual (Page 104)

104
Mesa Rugged Notepad Owner’s Manual
LED Indicators
Each battery compartment has a green and red LED. The LED
states indicate the following:
LED State Indicates
Red LED On Battery pack charging
Green LED On Battery pack fully charged
Red Flashing LED Battery pack or charging fault
Battery Pack or Charging Faults and Remedies
Possible causes for a flashing red LED:
„
Over-discharged battery: The battery pack is severely
depleted. The red LED flashes a few seconds after the battery
is inserted. If the red LED continues to flash for a couple
of minutes, remove the battery pack. It might be faulty,
requiring replacement.
„
Pre-charge time out: A low battery pack is inserted and
the voltage does not reach an acceptable charge level. The
red LED flashes 30 minutes into the charge. The battery
pack might be at the end of its life or faulty, requiring
replacement. Note: Do not confuse this with the out-of-
temperature fault (next case).
„
Out-of-temperature range for safe charging: The charger
senses the battery pack is too cold (< 0˚ C, 32˚ F) or too hot
(> 40˚ C, 104˚ F) for safe charging. This can occur at any
time in the charge cycle. The red LED continues to flash,
even after the battery pack is removed. Reset the charger by
inserting a battery pack with an acceptable temperature or
remove and reapply the external power to the charger. Bring
the temperature of the battery pack into the safe charging
range. If the problem persists, the battery pack might be
faulty, requiring replacement.
„
Charge cycle time out: The battery pack does not reach full
charge within eight hours. The battery pack might be at the
end of its life or faulty, requiring replacement.