Siemens SIMATIC PANEL PC 877 - Manual (Page 139)

Maintenance and service
12.4 Installing and removing hardware components
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
12-25
12.4.6 Replacing the backup battery
Note
Batteries are wearing parts and should be replaced every five years in order to ensure
proper functioning of the PC.
To be noted before you replace the battery
Caution
Risk of damage!
The lithium battery may only be replaced with an identical battery or with a type
recommended by the manufacturer (Order No.: A5E00331143).
Warning
Risk of explosion and release of harmful substances!
Therefore, do not throw Lithium batteries into an open fire, do not solder or open the cell
body, do not short-circuit or reverse polarity, do not heat up above 100° C, dispose as
regulated and protected against direct exposure to sunlight, humidity and dewing.
Disposal
Caution
Batteries must be disposed of in accordance with local regulations.