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■ Internal...battery
...
• At extremely high or low temperatures, such
as if you leave the product in a closed car
during summer, the capacity of the internal
battery decreases and so will the amount
of time it can be used decreases. This also
decreases the lifespan of the battery. Use
the product at room temperature whenever
possible.
• After charging the battery, it gradually
discharges, even if you do not use the
product. If you do not use the product
for a long time, you should charge the
battery as the internal battery may have
discharged.
• The internal battery is a consumable item.
If the performance of the internal battery
does not recover (e.g. the usable time after
each charge has become extremely short),
stop using the battery as it is at the end of
its service life. As the battery is built-in, you
can have it replaced at an au shop/au Style
for a fee. Note that you will not be able to
use the product for a certain period of time.
The battery lifespan varies depending on
how the product is used.
• Depending on the use condition, the
internal battery may be inflated as it
comes close to the end of its service life.
This is due to the properties of lithium-
ion battery and does not pose any safety
risks.
42
Notes...on...Usage
(The...internal...battery...of...
the...product...is...a...lithium-ion...
battery.)
The internal battery is not
fully charged at the time of
purchase. Charge the battery
before using the product. If you
have not used the product for
a long time, you should charge
the battery.
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