Specification: Replacement FRU P/N 42T4552 42T4652 ASM P/N 42T5226 Battery (10.8V 4800MAh 6 Cells Li-Ion) for Lenovo R400 T61 R61i R61 with 14″ 14.1″ Wide Screen
Compatible with following laptops:IBM Lenovo Thinkpad
R400 T61 R61i R61 with 14″ 14.1″ Wide Screen T400