Puwda 45N1001 9 Cell Replacement Laptop Battery for Lenovo Thinkpad E420 E520 T420 T430 T520 T530 L430 L520 L530 W520 W530 0a36303 70++ 11.1V 87Wh Battery type: Li-ion; Voltage: 11.1V; Capacity: 87Wh; Color: Black High Capacity Battery 70++; 9 Cell Extended Life Batteries will stick out of the battery compartment by 1 inch. Fit laptop models: 0a36303 , T430 , T430I , T510 , T510i , T520 , T520i , T530 , T530i , W510 , W520 , W530. Compatible P/N: 45N1000 , 45N1001 , 45N1004 , 45N1005 , 45N1011 Fulfilled by Amazon