Publication 1756-UM001G-EN-P - January 2007
126 Maintain the Battery
Estimate 1756-BA2
Battery Life
(1756-L6x series B controllers only)
Use this table to estimate how much time will elapse before the
battery becomes low (BAT LED = solid red) on 1756-L6x, series B
controllers.
Worst-case Estimates of 1756-BA2 Battery Life
Worst-case Estimates of 1756-BATM Battery Life
Controller Temperature Time Before BAT LED Turns On Time after BAT LED turns on
and Power Is Cut Off
Power off 100% Power off 50% Yearly
decrease
1756-L55M12
1756-L55M13
60 °C (140 °F) 190 days 396 days 11% 190 days
25 °C (77 °F) 299 days 562 days 5% 299 days
0 °C (32 °F) 268 days 562 days 6% 268 days
1756-L55M14 60 °C (140 °F) 130 days 270 days 11% 139 days
25 °C (77 °F) 213 days 391 days 5% 228 days
0 °C (32 °F) 180 days 381 days 6% 193 days
1756-L55M16 60 °C (140 °F) 71 days 160 days 13% 76 days
25 °C (77 °F) 133 days 253 days 5% 142 days
0 °C (32 °F) 105 days 220 days 6% 112 days
1756-L55M22
1756-L55M23
Use the values for the 1756-L55M13 controller.
1756-L55M24 Use the values for the 1756-L55M14 controller.
1756-L63 60 °C (140 °F) 98 days 204 days 11% 104 days
25 °C (77 °F) 146 days 268 days 5% 157 days
0 °C (32 °F) 105 days 222 days 6% 113 days
Temperature 2.54 cm. (1 in.)
Below the Chassis, Max
Power Cycles Battery Life Before the BAT LED Turns Red
Project Size
1 MB 2 MB 4 MB 8 MB 16 MB
0...40 °C (32...104 °F) 3 per day 3 years 3 years 26 months 20 months 10 months
2 per day or less 3 years 3 years 3 years 31 months 16 months
41...45 °C (105.8...113 °F) 3 per day 2 years 2 years 2 years 20 months 10 months
2 per day or less 2 years 2 years 2 years 2 years 16 months
46...50 °C (114.8...122 °F) 3 per day or less 16 months 16 months 16 months 16 months 10 months
51...55 °C (123.8...131 °F) 3 per day or less 11 months 11 months 11 months 11 months 10 months
56...60 °C (132.8...140 °F) 3 per day or less 8 months 8 months 8 months 8 months 8 months
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