Lenovo 0A36307 ThinkPad 9 Cell Extended Life Battery 44++ for Lenovo ThinkPad X220, X230 Models Only. (Caution**: Not for X220 Tablet, X230 Tablet Models) Genuine Lenovo 0A36307 ThinkPad 9 Cell Extended Life Battery 44++ for Lenovo ThinkPad X220, X230 Models Only. (Caution**: Not for X220 Tablet, X230 Tablet Models) Lenovo Retail Packaged And Factory Sealed Genuine Product. 9 Cell Extended Life HI Capacity System Battery for X220 And X230 Laptops ( not used in Tablets) 0a36307 battery 44++ , 9 cell , 1.1lbs , 1.1 x 9.1 x 3.1 Inches, Lithium Cylindrical (Li Cylindrical) , 94WH , 9.0 AH, 11.1V