Lenovo ThinkPad L540
Yes. 2 slots, up to 16 GB seen working.
It takes DDR3-1600 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR3-1600 204-pin SO-DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 16 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.
Batteries in these laptops report 48 Wh or 56 Wh or 99 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 18 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the Lenovo ThinkPad L540?
Yes. 2 slots, up to 16 GB seen working. It takes DDR3-1600 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo ThinkPad L540 use?
DDR3-1600 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the Lenovo ThinkPad L540 take?
Machines in the reports run up to 16 GB. That matches the 16 GB maximum the firmware reports.
What battery does the Lenovo ThinkPad L540 use?
Batteries in these laptops report 48 Wh or 56 Wh or 99 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 L540, and the type code starts with 20AU. Other type codes share this name: 20AV.