Compatible Laptop Models:
Lenovo ThinkPad X1 Carbon 2016 Series
20FB-A009CD 20FB-A00ACD 20FB-A00DCD 20FB-A00XCD 20FB-A010CD 20FB-A011CD
20FB-A01MCD 20FB-A01YCD 20FB-A05VCD 20FB-A06UCD 20FC-A0C0CD
Lenovo ThinkPad X1 Carbon 4th Series
20FB-001XAU 20FB-0029AU 20FB-002MAU 20FB-A003AU 20FB-A004AU 20FC-000FAU 20FC-0015AU 20FC-001DAU
20FC-001VAU 20FC-001WAU 20FC-0023AU 20FC-0029AU 20FC-A00B00 20FC-A00CAU 20FC-S00Y01 20FC-S05700
Lenovo ThinkPad X1 Yoga Series
20FQ-000VAU 20FQ-001PAU 20FQ-002JAU 20FQ-CTO1WW 20FQA00HCD 20FQA01NCD 20FR-000BAU 20FR-0017AU
20FR-001DAU 20FR-001LAU 20FR-001SAU 20FR-0024AU 20FR-0025AU 20FR-0026AU 20FR-002EAU 20FR-002VAU 20FR-002W
Disconnect the connection between the old battery and the motherboard to avoid unnecessary damage caused by disassembling the battery. Then unscrew the old battery screws one by one and carefully save each.
Remove the old battery, carefully install the new battery on the battery case, and connect the wiring of the new battery.
If you don't understand the above steps, you can search for the video about laptop battery installation on YouTube. Maybe it will help you.
Install A New Battery: