There is no battery on the motherboard when it leaves the factory.
Lenovo ThinkPad X1 Extreme 1st Gen 15.6" i7-8850H 2.6GHz 64GB RAM 1TB SSD
Lenovo ThinkPad X1 Carbon 1st Gen i5-3427U 4GB 48.4RQ01.011 04W3893 Motherboard
CMOS RTC Battery For Lenovo ThinkPad X1 Carbon 1st 2nd 3rd / 4th to 9th Gen
5B21K90460 For Lenovo ThinkPad X1 Carbon 10th Gen Motherboard i7-1270P 32G OEM
CMOS RTC Battery For Lenovo ThinkPad X1 Carbon 6th Gen CR2016 01HY008 SB10L70751
Lenovo ThinkPad X1 Extreme Gen 5 16" i7-12700H 4K HDR 3050 Ti 16GB 512G 1TB #17
