Siemens S5-155U System Manual page 129

Backup battery
Type
Capacity
No-load voltage
Voltage under load
Storage life
Service life in operation
(see Section 4.3.4 for backup times)
Rechargeable battery
Type
Capacity
Rated voltage
Service life in operation
(see Section 4.3.4 for backup times)
Service life of fans
Weight
Noise emission
Environmental data
System Manual
C79000-B8576-C199-03
6ES5 955-3NC41
Lithium thionyl chloride
5 Ah
3.6 V
3.4 V
approx. 10 years
3 years max.
Nickel cadmium
1.2 Ah
3.6 V
o o
6 years at 40 C (104 F)
o
approx. 50,000 h at 40 C
approx. 5.8 kg
58 dBA
See technical specifications of the S5-135U/155U CC
Power Supply Units
6ES5 955-3NF41
o
approx. 50,000 h at 40 C
approx. 5.8 kg
58 dBA
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