Lenovo 9645 Personal Computer User Manual


 
provide system power when in portable mode. Batteries supplied by Lenovo for
use with your product have been tested for compatibility and should only be
replaced with approved parts.
Never attempt to open or service any battery. Do not crush, puncture, or incinerate
batteries or short circuit the metal contacts. Do not expose the battery to water or
other liquids. Only recharge the battery pack strictly according to instructions
included in the product documentation.
Battery abuse or mishandling can cause the battery to overheat, which can cause
gasses or flame to “vent” from the battery pack or coin cell. If your battery is
damaged, or if you notice any discharge from your battery or the buildup of
foreign materials on the battery leads, stop using the battery and obtain a
replacement from the battery manufacturer.
Batteries can degrade when they are left unused for long periods of time. For some
rechargeable batteries (particularly Lithium Ion batteries), leaving a battery unused
in a discharged state could increase the risk of a battery short circuit, which could
shorten the life of the battery and can also pose a safety hazard. Do not let
rechargeable Lithium-Ion batteries completely discharge or store these batteries in a
discharged state.
Heat and product ventilation
Computers 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:
v Do not leave the base of your notebook computer in contact with your lap or
any part of your body for an extended period when the computer is functioning
or when the battery is charging. Your computer produces some heat during
normal operation. Extended contact with the body could cause discomfort or,
potentially, a skin burn.
v Do not operate your computer or charge the battery near flammable materials or
in explosive environments.
v 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.
You
should inspect your desktop computer for dust accumulation at least once
every three months. Before inspecting your computer, turn off the power and
unplug the computer’s power cord from the electrical outlet; then remove any dust
from vents and perforations in the bezel. If you notice external dust accumulation,
you should also examine and remove dust from the inside of the computer
including heat sink inlet fins, power supply vents, and fans. Always turn off and
unplug the computer before opening the cover. If possible, avoid operating your
computer within 2 feet of high-traffic areas. If you must operate your computer in
or near a high-traffic area, you should inspect and, if necessary, clean your
computer more frequently.
For your safety and to maintain optimum computer performance, always follow
these basic precautions with your desktop computer:
v Keep the cover closed whenever the computer is plugged in.
v Regularly inspect the outside of the computer for dust accumulation.
x User Guide