There are many different laptops in the Lenovo ThinkPad X1 Carbon family. This is the 5th generation ThinkPad X1 Carbon and fits laptops made in 2017. If you have a laptop older than this, this is not the correct battery. This internal battery is used on all laptops that begin with type 20FB, 20HR or 20K as the initial portion of the model type number found on the bottom of the laptop.

For Example, this battery fits these laptop models:
ThinkPad X1 Carbon 20HR series
ThinkPad X1 Carbon 20FB series
ThinkPad X1 Carbon 20K series
ThinkPad X1 Carbon 20HR006SUS

This is the Genuine OEM Lenovo brand ThinkPad X1 Carbon 5th gen battery. For the lower cost Xtend brand version go to our Xtend Lenovo ThinkPad X1 Carbon Gen 5 battery.

We use the highest quality lithium-ion batteries that charge fast, last longer and weigh less than cheaper, lower quality batteries. This ThinkPad X1 Carbon GEN 5 battery is 100% compatible with the original battery specifications and is individually tested and backed by a 1 Year warranty.

You can expect about 4 hours to 8+ hours of run time with this ThinkPad Carbon Gen 5 battery when new, depending on your energy use.