This Sony VAIO VGN-FS550 Battery comes with 12 months warranty. Free shipping and 30 days no questions asked money back gaurantee! Sony VAIO VGN-FS550 Battery. This is a 11.1 Volt, 4000 mAh, Li-Ion Battery . Dimensions: 8.10 x 1.80 x 0.80. 100% OEM compatible. Sony…