Lenovo Battery
42T4522
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X301 - 27741JM
ThinkPad X301 - 27741NM
ThinkPad X301 - 277442M
ThinkPad X301 - 2774RY5
ThinkPad X301 - 27763AU
ThinkPad X301 - 27763KM
ThinkPad X301 - 27763LM
ThinkPad X301 - 2776A17
ThinkPad X301 - 2777CTO
ThinkPad X301 - 4057D56
ThinkPad X300 - 64771TM
ThinkPad X300 - 64771UM