Asus AST21 Basic Manual page 39

● The internal battery is a consumable item. If the performance
of a battery does not recover after charge, the battery is at
the end of service life. Battery is built into the product. For
repair, the product must be collected at au shops etc. and
charges will be incurred. Note that the length of service life
varies depending on the usage condition, etc.
● The internal battery sometimes swell up as they approach the
end of their service life. This is due to the properties of lithium-
polymer batteries, and is not a problem in terms of safety.
■ Charging equipment
● When not using the specified charging equipment, remove the
plug from the power outlet or cigarette lighter socket.
● Do not wrap the cord of the specified charging equipment
around the adapter itself. Doing so might cause electric
shock, fault, injury, overheating or fire.
● Do not forcibly bend the charging equipment's plug or the
connection between the connector and power cord. Doing so
might cause electric shock, fault, injury, overheating or fire.
■ au Micro IC Card (LTE)
● The au Micro IC Card (LTE) is lent to you by au. In case of loss
or damage, the card will be replaced at your expense. When a
malfunction is suspected, or in case of theft or loss, contact
an au shop or PiPit.
● Do not forcibly remove or insert the au Micro IC Card (LTE). Be
careful not to exert excessive force when inserting the card
into the product.
Safety precautions 37