What is the lifetime of the Modicon Quantum main CPU battery when powered down?

Issue
How long will the Modicon Quantum PLC main CPU battery will hold a project in a powered down state?

Product line
Modicon Quantum

Resolution
In a powered down Modicon Quantum PLC, the minimum lifetime of the main CPU battery (Part Number: 990XCP98000) is:
1) 1.5 years at 60 degrees C
2) 4.6 years at 25 degrees C

NOTE:

• This assumes that the battery is charged to 100% when the PLC is powered down.
• Also take into consideration that the shelf life of the battery is 10 years.

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