Lenovo ThinkPad X220 4286CTO
Yes. 2 slots, up to 16 GB seen working.
It takes DDR3-1333 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR3-1333 204-pin SO-DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 16 GB maximum
- How sure
- 7 of 7 reports show this layout
Worked out from 7 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 58 Wh or 87 Wh or 93 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 6 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the Lenovo ThinkPad X220 4286CTO?
Yes. 2 slots, up to 16 GB seen working. It takes DDR3-1333 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo ThinkPad X220 4286CTO use?
DDR3-1333 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the Lenovo ThinkPad X220 4286CTO 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 X220 4286CTO use?
Batteries in these laptops report 58 Wh or 87 Wh or 93 Wh, going by 6 reports. Other pack sizes may have shipped, so check the capacity printed on yours.
Is this my laptop?
Check the model name on the label underneath. It should read ThinkPad X220 4286CTO.