Rockwell Automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Packaged Controllers Quick Start and User Manual - Manual (Page 238)

238 Publication IASIMP-QS010B-EN-P - October 2009
Chapter 6 Battery Maintenance
Estimate 1769-BA
Battery Life Certain conditions affect typical battery life. Use this table to estimate your
battery life in varying conditions.
Battery Life Estimation
After the BATT indicator first indicates a low battery, use this table to
determine the amount of time you have until the battery can no longer support
memory in the event of a power loss.
Store Batteries
Additional Resources For more information, consult Guidelines for Handling Lithium Batteries,
publication
AG 5.4 , which comes with your replacement battery.
Controller Power At 25 °C (77 °F) At 40 °C (104 °F) At 60 °C (140 °F)
Always Off 14 months 12 months 9 months
On 8 hours per day, 5 days per
week 18 months 15 months 12 months
On 16 hours per day, 5 days per
week 26 months 22 months 16 months
Always On There is almost no drain on the battery when the controller is always on.
If the temperature is approx. Then change the battery within
60 °C (140 °F) 8 days
25 °C (77 °F) 25 days
ATTENTION
Follow these general rules to store your batteries:
•
Store batteries in a cool, dry environment. We recommend 25 °C
(77 °F) with 40…60% relative humidity.
•
You may store batteries for up to 30 days between -45…85 °C
(-49...185 °F), such as during transportation.
•
To avoid leakage or other hazards, do not store batteries above
60 °C (140 °F) for more than 30 days.