Read Me First
Preparations
Precautions (Battery Pack)
zCare should be exercised with regard to the following in order to avoid the possibility of overheating, fire or damage.
Avoid Heat
Do not throw the battery pack into a fire or expose it to excessive heat.
Keep Articles Away
Do not place the battery pack together with articles such as necklaces or hair- pins when carrying or storing.
Do Not Disassemble
Do not insert sharp objects into the battery pack, expose it to bumps or shocks, deform, disassemble, or modify it.
Do Not Short
Do not short the positive (+) and negative
Avoid Extreme Heat, Cold and Direct
Sunlight
Do not charge, use or leave the battery pack for extended periods where it will be exposed to direct sunlight, in a hot place (in a car on a sunny day, for example), or in a cold place.
Do not charge the battery using the methods other than indicated in this manual
Do not use this computer with a bat- tery pack other than the one specified (the one included with the computer or the specified battery pack sold sepa- rately)
Do Not Use With Any Other Computer The battery pack is rechargeable and was intended for the specified computer. Do not use it with a computer other than the one for which it was designed.
Do Not Put into a Microwave
Do not put the battery pack into a micro- wave oven or a pressurized chamber.
Stop Using
Should the battery emit an abnormal odor, become hot to the touch, become discolored, change shape, or become in any way different from normal, remove it from the computer and stop using it.
zDo not touch the terminals on the battery pack. The battery pack may no longer function properly if the contacts are dirty or damaged.
zDo not expose the battery pack to water, or allow it to become wet.
zIf the battery pack will not be used for a long period of time (a month or more), charge or discharge (use) the battery pack until the remaining battery level becomes 30% to 40% and store it in a cool, dry place.
zThis computer prevents overcharging of the battery by recharging only when the remaining power is less than approx. 95% (when Economy Mode (ECO) is enabled: 75%) of capacity.
zThe battery pack is not charged when the computer is first purchased. Be sure to charge it before using it for the first time. When the AC adaptor is connected to the computer, charging begins automatically.
zShould the battery leak and the fluid get into your eyes, do not rub your eyes. Immediately flush your eyes with clear water and see a doctor for medical treatment as soon as possible.
NOTE 
zThe battery pack may become warm during recharging or normal use. This is completely nor- mal.
zRecharging will not commence if internal tempera- ture of the battery pack is outside of the allowable temperature range (0 °C to 55 °C {32 °F to 131 °F}). (Î "Battery Power" in onscreen Reference Manual) Once the allowable range requirement is satisfied, charging begins automatically. Note that the recharging time varies based on the usage conditions. (Recharging takes longer than usual when the temperature is 10 °C {50 °F} or below.)
zIf the temperature is low, the operating time is shortened. Only use the computer within the allowable temperature range.
zThe battery pack is a consumable item. If the amount of time the computer can be run by using a particular battery pack becomes dramatically shorter and repeated recharging does not restore its performance, the battery pack should be replaced with a new one.
zWhen transporting a spare battery inside a pack- age, briefcase, etc., it is recommended that it be placed in a plastic bag so that its contacts are pro- tected.
zAlways power off the computer when it is not in use. Leaving the computer on when the AC adap- tor is not connected will exhaust the remaining bat- tery capacity.
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