Rockwell Automation 6181 Industrial Computer - Manual (Page 119)

Maintenance 12–3
Publication 6181-UM001D-EN-P
The RAC6181 Computer contains a battery to maintain the CMOS
settings and real-time clock. The battery is located in a battery holder on
the RAC6181 Computer backplane. Replace this battery as needed with
a Panasonic battery, part number CR2032, or Allen-Bradley part 6189-
1BATT.
The battery life is dependent on the amount of on-time per week.
Estimated life of the battery is listed below:
On-Time Expected Battery Life
0 hours/week 4 years
40 hours/week 5.5 years
80 hours/week 7 years
Replacing the Battery