Allen-Bradley ControlLogix System 1756-L1 User Manual page 411

If the BAT LED turns on when you apply power to the controller, the battery life may be
IMPORTANT
less then the table below indicates. Some of the battery life may have been used up
while the controller was off and unable to turn on the BAT LED.
Table 26.1 Worst-case estimates of life for the 1756-BATA battery
Controller: Temp:
1756-L55M12 60° C
1756-L55M13
25° C
0° C
1756-L55M14 60° C
25° C
0° C
1756-L55M16 60° C
25° C
0° C
1756-L55M22 Use the values for the 1756-L55M13 controller.
1756-L55M23
1756-L55M24 Use the values for the 1756-L55M14 controller.
1756-L63 60° C
25° C
0° C
Allen-Bradley HMIs
Time before BAT LED turns on:
Power off 100% Power off 50%
190 days 396 days
299 days 562 days
268 days 562 days
130 days 270 days
213 days 391 days
180 days 381 days
71 days 160 days
133 days 253 days
105 days 220 days
98 days 204 days
146 days 268 days
105 days 222 days
Maintain a 1756-BATM Battery Module
Time after BAT LED turns on
and then power off 100%:
Yearly
decrease:
11% 190 days
5% 299 days
6% 268 days
11% 139 days
5% 228 days
6% 193 days
13% 76 days
5% 142 days
6% 112 days
11% 104 days
5% 157 days
6% 113 days
Publication 1756-UM001E-EN-P - August 2002
26-3