This is a brand new Xtend brand battery for the ThinkPad X1 Gen 3 Carbon laptop. There are 6 generations of ThinkPad X1 Carbon laptops and they all use different batteries.
You can locate the Type number on the bottom of your laptop that precedes the long serial number. This battery fits laptops that start with Type 20BS and 20BT. Including these model numbers:
Lenovo - ThinkPad X1 Carbon Gen 3
Lenovo - ThinkPad X1 Carbon 20BS0045HH
Lenovo - ThinkPad X1 Carbon 20BS0049HH
Lenovo - ThinkPad X1 Carbon 20BS004AHH
Lenovo - ThinkPad X1 Carbon 20BS004CHH
Lenovo - ThinkPad X1 Carbon 20BTA06CCD
Lenovo - ThinkPad X1 Carbon 20BTA06DCD
Lenovo - ThinkPad X1 Carbon 20BTA06ECD
Lenovo - ThinkPad X1 Carbon 20BTA06FCD
Lenovo - ThinkPad X1 Carbon 20BTA07BCD
Lenovo - ThinkPad X1 Carbon 20BTA07CCD
Lenovo - ThinkPad X1 Carbon 20BTA0AMCD
Lenovo - ThinkPad X1 Carbon 20BTA0ANCD
Lenovo - ThinkPad X1 Carbon 20BTA0M400
Lenovo - ThinkPad X1 Carbon 20BTA0S4CD
This Lenovo replacement battery is located inside the laptop and you will need to open the laptop chassis in order to change the battery. There are 7 Phillips head screws that need to be removed to pop off the keyboard cover. The keyboard will come off and expose the battery. The battery has a ribbon cable that inserts into the main circuit board. This ribbon cable will be removed and the wiring harness on your new battery will plug into the motherboard in the same opening.
This Lenovo X1 Carbon gen 3 battery features lithium-ion cells. Li-ion battery technology provides longer run times with less weight. This Lenovo battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.
