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Amazon.com: CMOS Battery RTC BIOS Battery Compatible with Lenovo Thinkpad X1 Carbon 5th Gen(Type 20HR, 20HQ,20K4, 20K3) |X1 Carbon 6th Gen (Type 20KH, 20KG) |X280(Type 20KF, 20KE) |A285(Type 20MW, 20MX),CR2016 : Electronics
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RTC CMOS Battery Compatible with Lenovo Thinkpad X1 Carbon 5th Gen|X1 Carbon 6th Gen||X280 |A285 FRU:01HY008 CR2016 - AliExpress
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