6Precautions for UseObserve the following to use this product correctly.Handheld computerpp Do not open or modify the main unit case.Battery packpp The battery pack is a consumable. The battery life, which varies with using conditions,is approximately a year as a guideline, and after a year or approximately over 300 timesof recharging, the recharging capability becomes weak. If the battery is exhausted in ashort time after full recharging, replace the battery pack with new one.pp Be sure to use the specified battery pack.pp Do not touch the contact portions of the battery pack. Failure to observe this may causepoor contact.pp Leaving this product for a long time after recharging reduces the battery capacity even ifthe power is turned off.pp Recharge the battery pack at ambient temperatures from 5 °C to 35 °C. When thetemperature exceeds the ambient charging temperature, charging stops and theindicator goes out.pp Store the battery pack at ambient temperatures from -20 °C to 35 °C. Recharging orstoring the battery pack outside of the specified temperatures reduces the performanceand life of the battery pack.pp Charge the battery pack before use.pp When the terminal of the battery pack becomes dirty, use a dry soft cloth to clean theterminal. Failure to observe this may cause poor contact with the device and cut powersupply.pp Once the terminal of the battery pack is clogged with foreign matter, the matter is hardto be removed, resulting in damage to the device.pp If an anomaly such as heat generation, deformation, and abnormal odor is detected withrespect to the battery pack, do not use the battery pack.pp If recharging is not completed after the specified recharging time has passed, removethe battery pack from the device. The battery pack protection device may be damaged.pp The rechargeable battery to be used to operate this product is a lithium-ion battery.pp Do not dispose of but recycle no longer needed batteries to protect precious resources.Operating environment and service placepp Do not leave this product in a place exposed to high temperature or excessive dust.pp Condensation may occur when this product is moved from a cold place to a warm place.In case of condensation, do not use this product until water droplets disappear.pp Do not put this product where static is likely to be generated (such as a carpeted place)or where magnetism generating devices such as a TV set and a radio are nearby.pp Do not leave this product under direct sunshine or at excessive high or lowtemperatures for a long time.pp Protect this product from rain or water.