Lenovo A7-40 Tablet - Manual (Page 6)

Important safety and handling information
5
Charging method Display on Display off
ac adapter Supported, but the
battery will charge
slowly.
Supported
USB connection between
the dc-in connector on the
device and a USB
connector on a personal
computer or other device
that comply with the USB
2.0 standards.
Users have to use the
connection to USB
interfaces with USB 2.0
version or higher.
Supported, but will
compensate
power
consumption and
the battery will
charge more
slowly than usual.
Supported, but the battery
will charge slowly.
Notes:
Display on: Device on
Display off: Device off or in screen lock mode
Charging devices might become warm during normal use. Ensure that you have
adequate ventilation around the charging device. Unplug the charging device if
any of the following occurs:
 The charging device has been exposed to rain, liquid, or excessive
moisture.
 The charging device shows signs of physical damage.
 You want to clean the charging device.
Lenovo is not responsible for the performance or safety of products not
manufactured or approved by Lenovo. Use only approved Lenovo ac adapters
and batteries.