1. Installing Internal Optional DevicesExpress5800/GT110e-S User’s Guide 61Chapter 2 Preparations1.9 Extra Battery for RAID ControllerIf a RAID Controller (N8103-128/149/150/151) is installed, use the optional extra battery to avoid data losscaused by accidents including temporary blackout during a write-back operation. The model of the extrabattery to be used depends on RAID Controller.• N8103-128, use N8103-141 extra battery• For N8103-149/150/151, use N8103-153 extra battery1.9.1 Handling precautionsBelow are the precautions to be observed whenever using the backup battery. Be sure to observe thefollowing, otherwise property such as data or other devices might be destroyed.• Use the extra battery that supports the RAID Controller used.• The extra battery is a very delicate electronic device. Before installation, touch the metal frame part ofthe server to discharge the static electricity from your body.• Do not drop or bump the backup battery.• For recycling and disposing the backup battery, refer to the user’s guide that comes with it.1.9.2 Installing N8103-141 extra batteryInstall an extra battery in the server by using the following procedure.Note Read through the user’s guide supplied with the RAID Controller beforeinstallation.Filling out the date on the Set up date labelWrite down the installation date (year and month) on the Set up date label supplied with the extra battery.Attach the label on the battery cover or somewhere easy to find on the server.Important The shelf life of the battery pack is about 2 years though actual life dependson the operating environment and conditions. If it has been used for 2 yearsor more, the maximum data backup time is not guaranteed. Replace it soonwith a new battery pack, referring to the user’s guide for the extra battery.Fill out the Set up date label supplied with the batteryWrite the date.Example: Y 2012. M 4