Lenovo ThinkPad E15
Yes. One slot, up to 32 GB seen working.
It takes DDR4-2666 laptop-size sticks (SO-DIMM).
- Slots
- 1 SO-DIMM slot
- Type
- DDR4-2666 260-pin SO-DIMM
- Most seen working
- 32 GB in two or more machines
- Firmware says
- 16 GB maximum (often wrong, so we show what machines run)
- How sure
- 78 of 78 reports show this layout
Worked out from 78 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 46 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 78 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the Lenovo ThinkPad E15?
Yes. One slot, up to 32 GB seen working. It takes DDR4-2666 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo ThinkPad E15 use?
DDR4-2666 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the Lenovo ThinkPad E15 take?
Machines in the reports run up to 32 GB. The firmware reports a maximum of 16 GB, a figure that is often wrong.
What battery does the Lenovo ThinkPad E15 use?
Batteries in these laptops report 46 Wh, going by 78 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 E15, and the type code starts with 20RD. Other type codes share this name: 20RE.