Lenovo ThinkPad X1 Carbon Gen 9

Type 20XW Laptop, from 2021 73 hardware reports
Memory
Soldered
No slot to add more
Battery
57 Wh
Reported by the batteries
SSD and charger
Coming next
Checked from separate sources
Not upgradable

No. The memory is soldered to the board.

8 or 16 or 32 GB is built in and there is no slot to add more.

Free slots
None
Type
LPDDR4-4266
Soldered
8 GB or 16 GB or 32 GB, depending on the configuration
Firmware says
4064 GB maximum (often wrong, so we show what machines run)
How sure
73 of 73 reports show this layout

Worked out from 73 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

All soldered
Illustration
Battery

Batteries in these laptops report 57 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.

Lenovo ThinkPad X1 Carbon Gen 9 battery on AmazonMatch the capacity and part number to the label on your battery.

From 72 battery readings. Sources and method. Updated 9 Nov 2026.

Illustration

Questions

Can I upgrade the RAM in the Lenovo ThinkPad X1 Carbon Gen 9?

No. The memory is soldered to the board. 8 or 16 or 32 GB is built in and there is no slot to add more.

What type of RAM does the Lenovo ThinkPad X1 Carbon Gen 9 use?

LPDDR4-4266 memory soldered to the board.

How much RAM can the Lenovo ThinkPad X1 Carbon Gen 9 take?

Machines in the reports run up to 32 GB. The firmware reports a maximum of 4064 GB, a figure that is often wrong.

What battery does the Lenovo ThinkPad X1 Carbon Gen 9 use?

Batteries in these laptops report 57 Wh, going by 72 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 Gen 9, and the type code starts with 20XW. Other type codes share this name: 20XX.