Lenovo ThinkPad E16 Gen 1

Type 21JT Laptop, from 2023 18 hardware reports
Memory
Up to 40 GB
2 laptop-size slots
Battery
47 Wh / 57 Wh
Reported by the batteries
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. 2 slots, up to 40 GB seen working.

It takes DDR4-3200 laptop-size sticks (SO-DIMM).

Slots
2 SO-DIMM slots
Type
DDR4-3200 260-pin SO-DIMM
Most seen working
40 GB in two or more machines
Firmware says
64 GB maximum (often wrong, so we show what machines run)
How sure
18 of 18 reports show this layout
See 16 GB DDR4-3200 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

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

2 laptop-size slots
Illustration
Battery

Batteries in these laptops report 47 Wh or 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 E16 Gen 1 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 E16 Gen 1?

Yes. 2 slots, up to 40 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).

What type of RAM does the Lenovo ThinkPad E16 Gen 1 use?

DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).

How much RAM can the Lenovo ThinkPad E16 Gen 1 take?

Machines in the reports run up to 40 GB. The firmware reports a maximum of 64 GB, a figure that is often wrong.

What battery does the Lenovo ThinkPad E16 Gen 1 use?

Batteries in these laptops report 47 Wh or 57 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 E16 Gen 1, and the type code starts with 21JT. Other type codes share this name: 21JN, 21JU.