Lenovo ThinkPad X1 Carbon 3rd
No. The memory is soldered to the board.
All of the memory is built in and there is no slot to add more.
- Slots
- None
- Firmware says
- 16 GB maximum
- How sure
- 15 of 15 reports show this layout
Worked out from 15 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 50 Wh.
That is the design capacity the batteries themselves report, and the label can read 1 to 3 Wh higher. Other pack sizes may have shipped, so check the capacity printed on yours before you order.
From 15 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the Lenovo ThinkPad X1 Carbon 3rd?
No. The memory is soldered to the board. All of the memory is built in and there is no slot to add more.
What battery does the Lenovo ThinkPad X1 Carbon 3rd use?
Batteries in these laptops report 50 Wh, going by 15 reports. Other pack sizes may have shipped, so check the capacity printed on yours.
Is this my laptop?
Check the label on the bottom. It should say ThinkPad X1 Carbon 3rd, and the type code starts with 20BS. Other type codes share this name: 20BT.