This laptop battery replaces the following part numbers
SONY VGP-BPS9, VGP-BPL9, VGP-BPS9A/B, VGP-BPS9/B, VGP-BPS9/S

This laptop battery can also fit with the following models
SONY VAIO VGN-AR41E, VGN-AR41L, VGN-AR41M, VGN-AR41S, VGN-AR47G, VGN-AR49G, VGN-AR520E, VGN-AR550E, VGN-AR550U, VGN-AR48C, VGN-AR53DB, VGN-AR73DB, VGN-AR83S, VGN-AR83US, VGN-AR93S, VGN-AR93US
SONY VAIO VGN-CR21/B, VGN-CR23/B, VGN-CR23/L, VGN-CR23/N, VGN-CR23/P, VGN-CR23/R
SONY VAIO VGN-NR110E, VGN-NR120E, VGN-NR123E, VGN-NR140E, VGN-NR160E, VGN-NR160N, VGN-NR180E, VGN-NR180N, VGN-NR185E, VGN-NR220E, VGN-NR240E, VGN-NR260E, VGN-NR270N, VGN-NR280E, VGN-NR285E, VGN-NR290E, VGN-NR295N, VGN-NR298E, VGN-NR310E, VGN-NR320E, VGN-NR330E, VGN-NR360E, VGN-NR370N, VGN-NR380E, VGN-NR115E, VGN-NR385E, VGN-NR390E, VGN-NR398E, VGN-NR410E, VGN-NR430E, VGN-NR460E, VGN-NR475N, VGN-NR485E, VGN-NR490E
SONY VAIO VGN-SZ51B_B, VGN-SZ52B_B, VGN-SZ53B_B, VGN-SZ5MN_B, VGN-SZ5VN_X, VGN-SZ5VWN_X, VGN-SZ5XN_C, VGN-SZ5XWN_C, VGN-SZ55/B, VGN-SZ! 56/C, VGN-SZ561N, VGN-SZ562N, VGN-SZ57N/C, VGN-SZ58N/X, VGN-SZ645, VGN-CR21S