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9.5. The Temperature of the Lithium Ion Battery (ESB1)
during Charging
Charge the battery in an environment with a temperature of
50 to 77°F (10 to 25°C).
• To protect the battery, if the internal temperature of the battery is
under 32°F (0°C) or over 104°F (40°C), charging does not start.
Instead, it enters a standby mode. During this time, the charge
lamp (green) ashes.
While in standby mode, when the battery reaches an appropri-
ate temperature, the charge lamp (green) will change from a
ashing to an “on” state, and charging will start automatically. (The length of the standby time varies with the condi-
tions.)
• The battery temperature increases during charging. However, if the battery temperature rises above 113°F (45°C),
the power for the charger will turn o to protect the battery.
Since charging has not ended, it is necessary to charge again after the battery temperature has decreased.
Charging a battery immediately after travel, or charging a new battery is likely to cause its temperature to increase,
which increases the likelihood of the charger stopping charging before completion.
Charge lamp
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