Gateway M-7301U, Reference Manual

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If you have a spare lithium-ion battery, use one exclusively
and keep the other cool by placing it in the refrigerator. Make
sure that it is wrapped protectively and that nothing will be
dropped on it. Do not freeze the battery.
Do not use old batteries. Avoid purchasing spare lithium-ion
batteries and storing them for later use. Do not buy old stock,
even if it is sold at clearance prices. While it makes sense to
have 2 or 3 extra batteries, so that you always have a fresh
one charged up and ready to go, if you buy batteries and store
them for years, they may not work when you decide to use
them.
Consider removing the battery from your notebook when
running on fixed power. However, remember that when you
have removed the battery from your notebook while using it
with an electrical outlet, the automatic battery charger no
longer keeps the battery charged.
Cleaning CDs or DVDs
Wipe from the center to the edge, not around in a circle, using
a product made especially for the purpose.
Caution
When the battery is in the notebook and the notebook is running on AC
power, the battery constantly charges, even though it has a full charge. This
reduces the life of the battery. If the battery is fully charged and you want to
run on AC power, remove the battery.