Casio IT-300 Series User Manual

Also see for IT-300 Series: Important notes

E-20Loading and Removing the Battery PackYour Handheld Terminal uses two types of battery: a battery pack and a memorybackup battery.The battery pack is used to power normal operations and to store data, while thememory backup battery provides the power required to maintain memory contentswhen the battery pack power is unable to supply power for some reason.Use the battery pack (HA-D20BAT-A) as the main power source.The backup battery is installed inside of the Handheld Terminal.This guide uses the following terms to refer to the batteries.Battery Pack: Rechargeable battery pack (HA-D20BAT-A) for normal operations anddata storageBackup Battery: Built-in battery for memory backupWhen the battery pack power goes low, immediately charge it or replace it with acharged battery pack.You can use the AC adaptor or the Dual Battery Charger to charge a battery packinstalled in the terminal. See the relevant sections in this guide for the respectiveoptions about how to use.Important!Always keep backup of all important data!The battery pack powers normal operation and also provides power required tomaintain memory contents, while the backup battery provides backup power tomaintain memory contents. Because of this, you should not remove the batterypack if the backup battery is dead. Removing the battery pack while the backupbattery is dead causes data in the memory to be corrupted or lost. Note thatonce data is lost it cannot be recovered. Always keep backup of all importantdata.The charge of a battery pack when you purchase it may be depleted due totesting at the factory or natural discharge during shipment and storage. Be sureto charge the battery pack before you use it.The life of a battery pack is limited, and charging a battery pack causes it togradually lose its ability to maintain the charge. If your battery pack seems torequire charging very frequently, it probably means it is time to purchase a new one.If a battery pack is used past the end of its service life, it may swell up in size. Insuch a case, replace the battery pack with a new one.If the backup battery is fully charged, it will maintain the contents of theterminal’s memory (RAM) for approximately 10 minutes when the main batterypack is removed.It takes 4 days with the main battery pack installed in the terminal for thebackup battery to be charged fully.••••••