Lenovo ThinkPad T420si (English) User Guide - Page 13

Lithium coin cell battery notice, Heat and product ventilation, California Perchlorate Information

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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. Lithium coin cell battery notice DANGER Danger of explosion if battery is incorrectly replaced. When replacing the lithium coin cell battery, use only the same or an equivalent type that is recommended by the manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of. Do not: • Throw or immerse into water • Heat to more than 100°C (212°F). • Repair or disassemble Dispose of the battery as required by local ordinances or regulations. The following statement applies to users in the state of California, U.S.A. California Perchlorate Information: Products containing CR (manganese dioxide) lithium coin cell batteries may contain perchlorate. Perchlorate Material - special handling may apply. See http://www.dtsc.ca.gov/hazardouswaste/perchlorate. 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. © Copyright Lenovo 2012 xi

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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.
Lithium coin cell battery notice
DANGER
Danger of explosion if battery is incorrectly replaced.
When replacing the lithium coin cell battery, use only the same or an equivalent type that is
recommended by the manufacturer. The battery contains lithium and can explode if not properly
used, handled, or disposed of.
Do not:
•
Throw or immerse into water
•
Heat to more than 100°C (212°F).
•
Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
The following statement applies to users in the state of California, U.S.A.
California Perchlorate Information:
Products containing CR (manganese dioxide) lithium coin cell batteries may contain perchlorate.
Perchlorate Material - special handling may apply.
See
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.
© Copyright Lenovo 2012
xi