Batteries100.com strives to be one of the technology leaders in the batteries and adapters industry. We specialize in laptop batteries and adapters, we have one of the top ranking manufacturing bases and testing facilities. All sony vaio z series batteries that we supply will be tested by technicians to ensure that their designs can meet or even exceed original products. Please choose the correct battery from your sony laptop. You can either buy wholesale vaio z series batteries from us, or simply have us drop-ship directly to your end user customer. Thanks for your order.