D Charging Caution - Icom IC-M92D Instruction Manual

CAUTION: Shorter battery life could occur if the battery is left fully
charged, completely discharged, or in an excessive temperature en-
vironment (above +50˚C (+122˚F)) for an extended period of time. If
the battery must be left unused for a long time, it must be detached
from the radio after discharging. You may use the battery until the
remaining capacity is about half, then keep it safely in a cool dry
place with the temperature range as follows:
–20˚C to +50˚C (–4˚F to +122˚F) (within a month)
–20˚C to +35˚C (–4˚F to +122˚F) (within three months)
–20˚C to +25˚C (–4˚F to +122˚F) (within a year)

D Charging caution

Charge the battery pack at least once every six months, even if it
has been not used for a long period of time. The battery pack will
have slowly self-discharged, even though it has not been used. If the
battery pack is left for a long period without being charged, its life
cycle will be shorter, or worse, it will never accept a charge again.
Due to the characteristics of the Li-ion rectangular battery, the
battery pack may change its shape as the charge and discharge
cycles are repeated. This is a normal phenomenon, and it is quite
safe to continue to use the pack, as long as it is properly handled.
However, when the shape of the battery pack is so changed that
the battery pack or battery cover can not be correctly attached to
the transceiver, it is time to replace it with a new one. Otherwise, the
transceiver can be damaged due to the loss of air tightness.
BATTERY CHARGING
R DANGER! NEVER charge the battery pack in areas with ex-
tremely high temperatures, such as near fires or stoves, inside
a sun-heated car, or in direct sunlight. In such environments, the
safety/protection circuit in the battery will activate, causing the bat-
tery to stop charging.
WARNING! DO NOT charge or leave the battery in the battery char-
ger beyond the specified time for charging. If the battery is not com-
pletely charged by the specific time, stop charging and remove the
battery from the battery charger. Continuing to charge the battery
beyond the specific time limit may cause a fire, overheating, or the
battery may rupture.
WARNING! NEVER insert the transceiver (battery attached to the
transceiver) into the charger if it is wet or soiled. This could corrode
the battery charger terminals or damage the charger. The charger is
not waterproof.
CAUTION: DO NOT charge the battery outside of the specified
temperature range: ±0˚C to +45˚C (+32˚F to +113˚F). Icom recom-
mends charging the battery at +20˚C (+68˚F). The battery may heat
up or rupture if charged out of the specified temperature range, and
battery performance or battery life may be reduced.
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