This is a Original Battery for Sony AX and BX Series Compatible Sony Models: Vaio VGN-AX: Vaio VGN-AX570G, Vaio VGN-AX580G. Vaio VGN-BX: Vaio VGN-BX143C, Vaio VGN-BX143, Vaio VGN-BX143CP, Vaio VGN-BX145CP, Vaio VGN-BX148CP, Vaio VGN-BX165CP, Vaio VGN-BX168CP, Vaio VGN-BX178CP, Vaio VGN-BX194VP, Vaio VGN-BX195EP, Vaio VGN-BX195SP, Vaio VGN-BX195VP, Vaio VGN-BX196SP, Vaio VGN-BX196VP, Vaio VGN-BX197XP, Vaio VGN-BX245CP, Vaio VGN-BX248CP, Vaio VGN-BX294VP, Vaio VGN-BX295SP, Vaio VGN-BX295VP, Vaio VGN-BX296VP, Vaio VGN-BX296XP, Vaio VGN-BX297XP, Vaio VGN-BX540B, Vaio VGN-BX540BH, Vaio VGN-BX540BW, Vaio VGN-BX540W, Vaio VGN-BX541B, Vaio VGN-BX543B, Vaio VGN-BX546B, Vaio VGN-BX560B, Vaio VGN-BX560BH, Vaio VGN-BX561B, Vaio VGN-BX563B, Vaio VGN-BX565B, Vaio VGN-BX567B, Vaio VGN-BX570BH, Vaio VGN-BX575B, Vaio VGN-BX640P, Vaio VGN-BX645P, Vaio VGN-BX660P, Vaio VGN-BX665P, Vaio VGN-BX670P, Vaio VGN-BX675P, Vaio VGN-BX90PS , Vaio VGN-BX90PS1, Vaio VGN-BX90PS2, Vaio VGN-BX90PS3, Vaio VGN-BX90PS4, Vaio VGN-BX90PS5, Vaio VGN-BX90PS6, Vaio VGN-BX90PS7, Vaio VGN-BX90PS8, Vaio VGN-BX94PS, Vaio VGN-BX96PS, Vaio VGN-BX540B, Replaces part #s: VGP-BPL4 Product Specifications: Rating: 11.1V Capacity: 8800mAh Size: 8.15 '' x 2.00 '' x 1.45 '' Cells: 12-cell Color: Black Technology: Lit-Ion Condition: Brand New In Stock: Yes

This is a 4000 mAh Original Battery for Sony VGN-AX and VGN-BX Series Compatible Sony Models: Vaio VGN-AX: VGN-AX570G, VGN-AX580G. Vaio VGN-BX: VGN-BX296XP, VGN-BX297XP, VGN-BX540B, VGN-BX540BH, VGN-BX540BW, VGN-BX540W, VGN-BX541B, VGN-BX543B, VGN-BX90PS , VGN-BX90PS1, VGN-BX90PS2, VGN-BX90PS3, VGN-BX90PS4, VGN-BX90PS5, VGN-BX90PS6, VGN-BX90PS7, VGN-BX90PS8, VGN-BX94PS, VGN-BX96PS, VGN-BX540B, VGN-BX143C, VGN-BX143, VGN-BX143CP, VGN-BX195EP, VGN-BX195SP, VGN-BX195VP, VGN-BX196SP, VGN-BX196VP, VGN-BX197XP, VGN-BX245CP, VGN-BX248CP, VGN-BX294VP, VGN-BX295SP, VGN-BX295VP, VGN-BX296VP, VGN-BX546B, VGN-BX560B, VGN-BX560BH, VGN-BX561B, VGN-BX563B, VGN-BX565B, VGN-BX567B, VGN-BX570BH, VGN-BX575B, VGN-BX640P, VGN-BX645P, VGN-BX660P, VGN-BX665P, VGN-BX670P, VGN-BX675P, VGN-BX145CP, VGN-BX148CP, VGN-BX165CP, VGN-BX168CP, VGN-BX178CP, VGN-BX194VP, Replaces part #s: VGP-BPS4, VGP-BPS4A. Product Specifications: Rating: 11.1V Capacity: 4000mAh Size: 8.2 x 1.8 x 0.8" Color: Black Technology: Li-Ion Condition: Brand New In Stock: Yes