Juniper Mesa Owner's Manual page 5

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 (below).
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.
Mesa Travel Charger User's Manual