Lenovo ThinkPad P14s Gen 4

Type 21K5 Laptop, from 2023 18 hardware reports
Memory
Soldered
No slot to add more
Battery
39 Wh / 52 Wh
Reported by the batteries
SSD and charger
Coming next
Checked from separate sources
Not upgradable

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
64 GB maximum
How sure
18 of 18 reports show this layout

Worked out from 18 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

All soldered
Illustration
Battery

Batteries in these laptops report 39 Wh or 52 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 P14s Gen 4 battery on AmazonMatch the capacity and part number to the label on your battery.

From 18 battery readings. Sources and method. Updated 9 Nov 2026.

Illustration

Questions

Can I upgrade the RAM in the Lenovo ThinkPad P14s Gen 4?

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 P14s Gen 4 use?

Batteries in these laptops report 39 Wh or 52 Wh, going by 18 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 P14s Gen 4, and the type code starts with 21K5. Other type codes share this name: 21HF, 21K6.