7-4 Caring for the ComputerCleaning Guidelinesz Never clean the computer with its power on.z Use a soft cloth moistened with water or a non-alkaline detergent towipe the exterior of the computer.z Gently wipe the display with a soft, lint-free cloth. Do not use alcoholor detergent on the display.z Dust on the IR port can interfere with data transfer. Wipe the portwith a soft, dry cloth.z Dust or grease on the touchscreen can affect its sensitivity. Clean thetouchscreen by using adhesive tape to remove the dust and grease onits surface.Battery Pack Guidelinesz Recharge the battery pack when it is nearly discharged. Whenrecharging, make sure the battery pack is fully charged. Doing somay avoid harm to the battery pack.z Operate the computer with the battery pack installed even when usingexternal power. This ensures that the battery is fully charged.z If you will not be using the computer for a long period of time (morethan two weeks), remove the battery pack from the computer.z If you remove the battery pack, make sure the battery terminals donot contact any conductors such as metal objects or water. Otherwise,the battery may become unusable as a result of a short circuit.z If you need to store the battery pack, store it in a cool, dry place.Never allow the temperature to exceed 70 °C (158 °F).z Do not leave the battery pack in storage for more than 3 monthswithout recharging it.