Be sure that the power outlet you are using is properly wired, easily
accessible, and located close to the equipment. Do not fully extend
power cords in a way that will stress the cords.
Connect and disconnect the equipment from the electrical outlet
All personal computers manufactured by Lenovo contain a non-
rechargeable coin cell battery to provide power to the system clock.
In addition many mobile products such as notebook PCs utilize a
rechargeable battery pack to 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
Lenovo 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
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
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
xii Lenovo USB Portable DVD Burner GP20N User Guide