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require cooling or warming first.
Do not leave the battery in hot or cold places because the capacity and
lifetime of the battery will be reduced. Try to keep the battery at room
temperature. A phone with a hot or cold battery may not work temporarily, even
when the battery is fully charged. Li-ion batteries are particularly affected by
temperatures below 0°C (32°F).
Use only approved batteries and chargers. Disconnect the charger from the
power source when it is not in use. Do not leave the battery connected to a
charger for more than a week, since overcharging may shorten its life.
