CWK New Replacement Laptop Notebook Battery for Sony Vaio VPCEE45FX/WI VPCEF34FX VPCEE32FX/WI VPCEE37FX/WI VPCEE44FM/BJ VPCEE44FM/WI VPCEE23FD VPCEE27FM/BI VPCEE31FX/BJ VPCEE31FX/WI VPCEC2FFX VPC 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!