CWK New Replacement Laptop Notebook Battery for Sony Vaio VGN-FS850W VGN-S580BH VGN-S660P VGN-S660P/B VGN-SZ150P VGN-FS775P-H VGN-FT50B VGN-N170G/W VGN-N325E/B VGN-N330N/B VGN-FS720/W VGN-FS742 V Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!