In the December 2004 winning tip "Expiration of disk controller card batteries," Eldon Dobring described the way to check expiration of disk controller batteries. In version 5.3 there is best method to do this.
Enter SST (strsst),
1 - start a service tool
7 - hardware service manager
9 - Work with resources containing cache battery packs. You should see disk controllers and some options, for example 5=Display battery information. This way provides you with the same information as in the STRSST...1,4,1,12 and 14 option.