Rockwell Automation 1785-l11B, -L20B, -L30B, -L40B, -L40L, -L60B, -L60L, -L80B Enhanced PLC-5 Programmable Controllers Installation Instructions - Manual (Page 22)

Publication 1785-IN062A-EN-P - May 2005
22 Enhanced PLC-5 Programmable Controllers
Battery Type
Enhanced PLC-5 programmable controllers use 1770-XYC batteries that
contain 0.65 grams of lithium.
Average Battery Lifetime Specifications
Worst-case battery life estimates
In this controller: At this
temperature: Power off
100% Power off
50% Battery duration
after the LED lights
1
PLC-5/11, -5/20 60°C 256 days 1.4 years 11.5 days
25°C 2 years 4 years 47 days
PLC-5/30, -5/40, -5/40L,
-5/60, -5/60L, -5/80 60°C 84 days 150 days 5 days
25°C 1 year 1.2 years 30 days
1
The battery indicator (BATT) warns you when the battery is low. These durations are based on the battery supplying the
only power to the controller (power to the chassis is off) once the LED first lights.