Sharp AQUOS wish4 - Internal Battery

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Internal battery
(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. Also charge the battery after long
periods of disuse before using the product.
● Use in very hot, humid or cold environments, for example, when left
in an automobile with the windows closed in summer, will cause the
internal battery capacity to drop and shorten the available battery
usage time and the internal battery's service life. Try to use and
charge the internal battery as much as possible at room temperature.
● Using apps for a long time with the product being charged may
shorten the internal battery's service life.
● The internal battery gradually discharges after charging even if the
product is not used. If the product has not been used for a long time,
the internal battery may over discharged and may not be charged.
Charge the internal battery regularly (every 6 month, up to
approximately 40%).
● If you store the product, avoid the following conditions to store, as
they may degrade performance of the internal battery and shorten its
service life.
•
Stored with the battery level is full (soon after charging is complete)
•
Stored with the battery level is empty (to the extent that the product
is not powered on)
The recommended battery level for storage is approximately 40%.
● Internal batteries sometimes swell up as they approach the end of
their service life depending on the usage condition. This is due to the
properties of lithium-ion batteries, and is not a problem in terms of
safety.
● The internal battery is a consumable item. Charging it repeatedly will
shorten its operating time gradually. If the performance of the internal
battery does not recover and deteriorates (e.g. the usable time after
each charge has become extremely short or the internal battery
swells), the internal battery is at the end of service life, so stop using
it. Since the battery is built-in type, the product will be kept at an au
Style/au shop etc. and charges will be incurred for repair. Battery life
varies depending on usage conditions and other factors.