Bay Valley Parts 5200mah 6 Cell Laptop Battery for ASUS U43F U52 U52F U53 U53S U53SD Series, fits P/N A31-U53 A42-U53 A32-U53 A41-U53 Battery type: Li-ion; Capacity: 56Wh; Cells:6-cell; Voltage: 10.8V;Capacity:5200mah. High quality grade "A" cells. Charges quickly. Longer discharge time. Steady output and low power consumption. More than 500 times charge-discharge cycles.All products are Certified by CE ROHS UL1642 FCC for safety. Operation time for standard batteries(6-cell 5200mah): Around 2 hours the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support 12-month service. Compatible Models: For ASUS A31-U53 A32-U53 A41-U53 A42-U53 U33 U33J U33JC U33JC-A1 U33JT U42 U42F U42J U42JC U42S U42SD U43 U43F U43F-BBA5 U43J U43JC U43JC-A1 U43JC-WX059V U43JC-X1 U43JC-B1 U43JC-WX041V U43JC-WX057V U43JC-WX059V U43JC-WX070V U43JC-WX080V U43JC-WX090X U43JC-WX097V U43JC-WX101V U43JC-WX118V U43JC-WX130V U43JC-WX139V U43SD U43SD-WX007V U43SD-WX024V U52 U52F U52F-BBL5 U52J U52JC U53 U53F U53J U53JC U53JC-A1 U53JC-XX049X U53JC-XX086V U53JC-XX108V replacement notebook laptop battery 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.