7-6 Caring for the Computerz It is recommended that you do not charge the battery pack more thanonce a day.z It is recommended that you charge the battery pack with the computer’spower off.z To maintain the battery pack’s operating efficiency, store it in a cooldark place removed from the computer and with 30 % ~ 40 % chargeremaining.z Important guidelines when using the battery pack.When installing or removing the battery pack take note of thefollowing:– avoid installing or removing the battery pack when the computer isin Sleep mode. Abruptly removing the battery pack may cause lossof data or the computer may become unstable.– avoid touching the battery pack terminals or damage may occur,thereby causing improper operation to it or the computer.The computer’s input voltage and surrounding temperature will directlyaffect the battery pack’s charge and discharge time:– charging time will be prolonged when the computer is turned on.To shorten the charging time, it is recommended that you place thecomputer in sleep or hibernation mode.– a low temperature will prolong the charging time as well as hastenthe discharge time.Touchscreen Guidelinesz Use the finger or the included stylus on the display. Using a sharp ormetallic object other than your finger or stylus may cause scratches anddamage the display, thereby causing errors.z Avoid using excessive force that may cause damage to the display.z Use a soft cloth to remove dirt on the display. The touchscreen surfacehas a special protective coating that prevents dirt from sticking to it. Notusing a soft cloth may cause damage to the special protective coating onthe touchscreen surface.