Lenovo IdeaPad U300e User Manual

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• Replace only with a battery pack of the type recommended by Lenovo.

• Keep the battery pack away from fire.

• Do not expose it to water or rain.

• Do not attempt to disassemble it.

• Do not short-circuit it.

• Keep it away from children.

• Do not drop the battery pack.

Do not put the battery pack in trash that is disposed of in landfills. When disposing of the battery,
comply with local ordinances or regulations.

The battery pack should be stored at room temperature, charged to approximately 30 to 50%
of capacity. We recommend that battery pack be charged about once per year to prevent
overdischarge.

Heat and product ventilation

DANGER

Computers, ac power adapters, and many accessories can generate heat when turned on and when
batteries are charging. Notebook computers can generate a significant amount of heat due to their
compact size. Always follow these basic precautions:
• When your computer is turned on or the battery is charging, the base, the palm rest, and some

other parts may become hot. Avoid keeping your hands, your lap, or any other part of your
body in contact with a hot section of the computer for any extended length of time. When you
use the keyboard, avoid keeping your palms on the palm rest for a prolonged period of time.
Your computer generates some heat during normal operation. The amount of heat depends on
the amount of system activity and the battery charge level. Extended contact with your body,
even through clothing, could cause discomfort or even a skin burn. Periodically take breaks
from using the keyboard by lifting your hands from the palm rest; and be careful not to use
the keyboard for any extended length of time.

• Do not operate your computer or charge the battery near flammable materials or in explosive

environments.

• Ventilation slots, fans and/or heat sinks are provided with the product for safety, comfort, and

reliable operation. These features might inadvertently become blocked by placing the product on
a bed, sofa, carpet, or other flexible surface. Never block, cover, or disable these features.

• When the ac power adapter is connected to an electrical outlet and your computer, it generates

heat. Do not place the adapter in contact with any part of your body while using it. Never use the
ac power adapter to warm your body. Extended contact with your body, even through clothing,
may cause a skin burn.

For your safety, always follow these basic precautions with your computer:
• Keep the cover closed whenever the computer is plugged in.
• Regularly inspect the outside of the computer for dust accumulation.
• Remove dust from vents and any perforations in the bezel. More frequent cleanings might be

required for computers in dusty or high-traffic areas.

• Do not restrict or block any ventilation openings.
• Do not operate your computer inside furniture, as this might increase the risk of overheating.
• Airflow temperatures into the computer should not exceed 35°C (95°F).