Siemens SITOP UPS1600 Equipment Manual page 229

SITOP BAT1600 LiFePO4 battery module
Article number: 6EP4132-0JA00-0AY0 and 6EP4134-0JA00-0AY0
The service life of LiFePO4 is specified by the manufacturer to be between 10 and 12 years at
10 - 30 °C. Above 30 °C and below 10 °C, the service life decreases by approximately 2 years
per 10 °C.
Calculated battery health
For batteries installed in BAT1600 battery modules, the maximum usable residual capacity is
permanently evaluated as "calculated battery health" (SoH) based on selected influencing
factors and data sheet values. A value of 80 % of the rated capacity is generally used as limit
value for the usable maximum residual capacity. Parameter "calculated battery health" has a
value range from 100 % (Begin of Life) to 0 % (End of Life). If, based on an internal
calculation, it reaches a value of 0 % (i.e. the calculated maximum usable residual capacity
corresponds to 80 % of the rated capacity), then this is signaled.
The following signals indicate that the End of Life of the batteries has been reached:
• Yellow flashing LED "BAT" at the UPS module
• Yellow flashing LED "O.K." at the battery module
• Signaling contact "O.K." at the UPS module
Note
If battery End of Life is signaled, this does not necessarily mean that the batteries no longer
function, only that the defined 80 % of the maximum usable residual capacity has been
reached. Depending on the buffer time required for the application, even as the batteries
continue to age, there can still be sufficient time to plan replacement of the batteries or the
battery module within the scope of a pending system maintenance procedure.
More information about parameter "calculated battery health" is available in Chapter Data
sets (Page 109).
SITOP UPS1600 / BAT1600 / UPS1100
Equipment Manual, 07.2021, A5E37775406-11-76
7.9 Service life of the batteries and handling
Installation
229