User Manual
  Chapter 4 Configuring 8500  47 
4.1.5 Power 
Here shows current voltage consumption. 
  Main: 
This refers to the main battery. 
It shows dynamic status of the battery pack, as the main power 
source. 
  Backup: 
This refers to the backup battery. 
It shows dynamic status of the button cell, which is used to 
retain data in SRAM. 










