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Charging method
Tablet on
(Display is on)
Tablet off or in screen lock mode
(Display is off)
ThinkPad Tablet 2 Dock (fastest
charging method)
Approved Approved
ThinkPad Tablet AC Adapter
Approved, but the battery will charge
slowly
Approved
ThinkPad Tablet DC Adapter
Approved, but the battery will charge
slowly
Approved
A USB connection between the dc-in
connector on the tablet and a USB
connector of a personal computer or
other device that complies with the
USB 2.0 standards (slowest charging
method)
This charging method will
compensate the power consumption.
The battery will discharge more slowly
than usual.
Approved, but the battery will charge
slowly
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.
Prevent hearing damage:
Your tablet has a headphone connector. Always use the headphone connector for headphones (also called a
headset) or earphones.
CAUTION:
Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of
the equalizer to maximum increases the earphone and headphone output voltage and the sound
pressure level. Therefore, to protect your hearing, adjust the equalizer to an appropriate level.
Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if
the output of the headphone or earphone connectors do not comply with specications of EN 50332-2.
The headphone output connector of your tablet complies with EN 50332-2 Sub clause 7. This specication
limits the tablet's maximum wide band true RMS output voltage to 150 mV. To help protect against hearing
loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 limits) for a
wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-2 can be
dangerous due to excessive sound pressure levels.
If your tablet came with headphones or earphones in the package, as a set, the combination of the
headphones or earphones and the tablet already complies with the specications of EN 50332-1. If different
headphones or earphones are used, ensure that they comply with EN 50332-1 (Clause 6.5 Limitation
Values). Using headphones that do not comply with EN 50332-1 can be dangerous due to excessive
sound pressure levels.
Take care when using your tablet in a motor vehicle or on a bicycle:
Always prioritize your safety and the safety of others. Follow the law. Local laws and regulations might
govern how you can use mobile electronic devices, such as your tablet, while you drive a motor vehicle
or ride a bicycle.
iv User Guide