TASCAM DR-100 4510–Settings and InformationValues: Li-Ion (lithium ion battery), AACAUTIONThe power turns off if the backup battery source doesnot have enough charge. In this case, all recordings,settings and other data will be lost.Changing batteries when thepower is onIf both the lithium ion battery and AA batteriesare installed, you can change batteries whilecontinuing to record and use other functions.NOTEIn the following sections, for simplicity we refer to themain "battery" and backup "battery," even though theunit uses two AA batteries. Both AA batteries shouldbe changed together.Changing the main batteryBefore changing the main battery, confirm thatits charge has become low enough that power hasswitched to the backup battery.The unit turns OFF if you remove the mainbattery while it is being used.If you must change the main battery even thoughit is in use, change the setting so that the backupbattery becomes the main battery and confirm thisoperation on the Home Screen first.Confirm that the replaced battery is installedproperly before changing the unit setting to makeit the main battery.CAUTIONIf the backup battery charge becomes less than acertain level, you can change the MAIN setting.However, the power source does not change whilethe unit is recording.Changing the backup batteryYou can change the backup battery at any timewhen the main battery is in use, but you shouldconfirm on the Home Screen that the main batteryhas enough remaining charge.The unit turns OFF if you remove the backupbattery while it is being used.Setting the type of AA batteries(AA BATTERY)You should set the type of AA batteries that youare using. This setting is used to show the amountof remaining battery charge and determine if theunit has enough power for normal operation.1 Press the MENU key to open the /'07 screen.2 Use the wheel to select 5'672, and press theENTER/MARK key3 Use the ##6;2' item to set the type.#.-#.+ Alkaline batteries0K/* Nickel metal hydride batteriesValues: ALKALI (default) Ni-MH