7-6 Caring for the Tablet PCAlso, charging will not start if the battery pack is not within the allowedtemperature range.z 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 Tablet PC’spower off.z To maintain the battery pack’s operating efficiency, store it in a cooldark place removed from the Tablet PC 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 Tablet PC isin Sleep mode. Abruptly removing the battery pack may causeloss of data or the Tablet PC may become unstable.– avoid touching the battery pack terminals or damage may occur,thereby causing improper operation to it or the Tablet PC.The Tablet PC’s input voltage and surrounding temperature will directlyaffect the battery pack’s charge and discharge time:– charging time will be prolonged when the Tablet PC is turned on.To shorten the charging time, it is recommended that you place theTablet PC 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 A screen protector film has been attached to the screen beforeshipment. The film is a consumable, which will be worn out after aperiod of use (6 months in average). You can purchase a new one whenreplacement is required.