Sharp AQUOS wish2 Quick Start Manual page 33

■ 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 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.
This will also shorten the internal battery's service life. Try to use the
internal battery as much as possible at room temperature.
● The internal battery gradually discharges after charging even if the
product is not used. The internal battery may discharge completely after
long time no use. Charge before using the product.
● 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), the internal battery is at the end of service
life, so stop using it and contact us at the inquiries listed on the last page
of "取扱説明書 詳細版 (Full Instruction Manual)" (Japanese). Note that the
length of service life varies depending on the usage condition, etc.
● Because the internal battery performance or service life will become low,
do not store the product in the following conditions.
• Battery level is full (soon after charging is complete)
• Battery level is empty (to the extent that the product is not powered on)
• In extremely hot or humid conditions
● 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.
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