This is a genuine Sony brand 6 cell battery. The superior Sony cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity. The battery is individually tested before shipment and backed by a 30 day complete satisfaction guarantee and a 1 year warranty.

You can expect about 2 - 2-1/2  hours of run time with this computer battery when new, depending on your energy use. If you are looking for even longer battery run times, check out our extended run battery for your Sony laptop (SON-VGP-BPL21). The higher capacity battery cells inside this cartridge have an energy capacity of 5200 mAh. 

This battery replaces the Sony Vaio VGN-FW, VGN-NW, VGN-NS, VGN-CW, VGN-AW, VGN-BZ, VGN-SR, VPC-CW, VPC-F, VPC-S, VPC-Y series laptop batteries and additional machines which are listed at the extreme bottom of this web page.