Lenovo ThinkPad X1 Extreme Gen 5

Type 21DE Laptop, from 2022 3 hardware reports

Memory

Reported by the batteries

SSD and charger

Coming next

Checked from separate sources

Upgradable

Yes. At least 1 slots, up to 32 GB seen working.

It takes the same type of laptop-size sticks (SO-DIMM).

Slots: At least 1 SO-DIMM slot
Firmware lists: 4 sockets, but no machine in the reports had more than 1 filled. Many laptops list sockets that aren't there, and some workstations hide two slots under the keyboard.
Most seen working: 32 GB; one machine runs 64 GB
Firmware says: 256 GB maximum
How sure: 2 of 3 reports show this layout

Worked out from 3 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

1+ laptop-size slot

Illustration

Battery

Batteries in these laptops report 90 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 Extreme Gen 5 battery on AmazonMatch the capacity and part number to the label on your battery.

From 3 battery readings. Sources and method. Updated 9 Nov 2026.

Illustration

Questions

Can I upgrade the RAM in the Lenovo ThinkPad X1 Extreme Gen 5?

Yes. At least 1 slots, up to 32 GB seen working. It takes the same type of laptop-size sticks (SO-DIMM).

What battery does the Lenovo ThinkPad X1 Extreme Gen 5 use?

Batteries in these laptops report 90 Wh, going by 3 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 Extreme Gen 5, and the type code starts with 21DE.