Lenovo ThinkPad L450

Type 20DS Laptop, from 2015 11 hardware reports
Memory
Up to 12 GB
2 laptop-size slots
Battery
23 Wh / 48 Wh / 71 Wh
Reported by the batteries
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. 2 slots, up to 12 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
12 GB in two or more machines; one machine runs 16 GB
Firmware says
16 GB maximum (often wrong, so we show what machines run)
How sure
11 of 11 reports show this layout
See 4 GB DDR3-1600 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 11 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

2 laptop-size slots
Illustration
Battery

Batteries in these laptops report 23 Wh or 48 Wh or 71 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 L450 battery on AmazonMatch the capacity and part number to the label on your battery.

From 11 battery readings. Sources and method. Updated 9 Nov 2026.

Illustration

Questions

Can I upgrade the RAM in the Lenovo ThinkPad L450?

Yes. 2 slots, up to 12 GB seen working. It takes DDR3-1600 laptop-size sticks (SO-DIMM).

What type of RAM does the Lenovo ThinkPad L450 use?

DDR3-1600 laptop-size sticks (SO-DIMM, 204-pin).

How much RAM can the Lenovo ThinkPad L450 take?

Machines in the reports run up to 12 GB, and one runs 16 GB. The firmware reports a maximum of 16 GB, a figure that is often wrong.

What battery does the Lenovo ThinkPad L450 use?

Batteries in these laptops report 23 Wh or 48 Wh or 71 Wh, going by 11 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 L450, and the type code starts with 20DS. Other type codes share this name: 20DT.