Here is a link to the manual, page 92 will give you the steps to replace the battery: ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_poweredge/poweredge-1900_Owner%27s%20Manual_en-us.pdf Your RAID configuration is stored on the drives. Power down and replace the battery, then power it back up. If it asks, accept the configuration from the drives and proceed.  Regards,
I have a replace battery message in the Dell Open Manage Application for a Dell PowerEdge 1900 Perc 5/i controller. When I replace the battery will I lose the current RAID Setup? Also any procedures available for replacing the battery pack? Thanks Jeff Hicks
PowerEdge 1900 perc 5/I Controller Battery Replacement