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Amazon.com: LJCELL CMOS Battery for IBM Lenovo ThinkPad Laptop X1 Carbon 2-nd Carbon 3rd Carbon 4th Carbon 5th Carbon 6th BIOS RTC CR2016 Battery with 2 Wire Cable and Connector : Electronics
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Amazon.com: Rome Tech CR2016 CMOS Battery for Lenovo ThinkPad X1 Yoga 2nd Gen (Type 20JD, 20JE, 20JF, 20JG) - 00HN933 - BIOS RTC 3V CR 2016 CMOS Battery with 2 Pin 2 Wire Cable : Electronics
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