Part#: 6ES7971-0BA00
Description: Back Up Battery
Part Type: 6ES5980-0AE11.
Manufacturer: Saft
System Name: Simatic S7
Additional Information:
Backup battery used in S7-400, some S5-115U power supplies and the OP396. This is the same battery as the 6ES5980-0AE11. Li battery, size AA