3. If you remove the main battery and plug it back before the backup batterylost power, PA500II will be warm start.4. If you remove the main battery and plug it back after the backup batterylost power, PA500II will be clean booted.Charging the PA500IIFor initial use, you need to charge your device for about 16 hours. After that,you can charge it everyday to recharge the battery to full capacity. You cancharge your device using the USB charging cable or the docking station.CAUTION! Operating the PA500II for the first time without the AC adapter, andwithout fully charging the backup battery may result in loss of datastored in RAM memory.NOTE: Data you entered may not be properly stored until the internal backupbattery has been fully charged.To charge the device using the USB charging cable:1. Attach the clip plug to the AC adapter, if necessary. Slide the replaceableclip plug into the AC adapter until it locks into place with an audible click.2. Press and hold the connector button on the USB charging cable andconnect it to the PA500II (1).3. Plug the AC adapter cable into the power jack on the USB charging cable(2).4. Connect the AC adapter into an electrical outlet (3).6 Copyright 2011 unitech Electronics Co., Ltd. All rights reserved. unitech is a registered trademark of unitech Electronics Co., Ltd.