Coolgo&reg; New Laptop Battery Replacement for ASUS A32-K53 A41-K53 for ASUS K53 K53E X54C X53S - 18 Months Warranty [li-ion 6-cell 10.8 5200mAh Black] 6 cells 10.8V 5200mAh black Asus laptop battery pack A32-K53 A41-K53 A42-K53 for ASUS:K43JC,K43JM,K43JS,K43JY,K43S,K43SC,K43SD,K43SE,K43SJ,K43SR,K43SY,K43SV,K43T,K43TA,K43U,K53 Series,K53B,K53BY,K53E,K53F,K53J,K53JA,K53JC,K53JE,K53JF,K53JG,K53JN,K53JS,K53JT,K53S,K53SA,K53SC,K53SD,K53SE,K53SJ,K53SN,K53SV,K53T,K53TA,K53U,X43 Series,X43B,X43BY,X43E,X43J,X43JE,X43JF,X43JR,X43JX,X43S,X43SJ,X43SR,X43SV,X43T,X43U,X43 series laptops. Quality Certication: All the products pass the ISO9001, CE and ROHS, FCC multiple international authentication and completely accord with environmental protection requirement. Consummate Design: Excellent design makes the product not only has the overcharge, discharge and short circuit multiple protection, but also to balance charge-discharge of all the internal cells. Environmental Test: Standard modern assembly line. All products have passed a variety of charge-discharge and aging test before they leave the factory. 100% quality test for all items. Free shipping via USPS first class package from USA, 24 x 7 Email Support. Brand new direct from Professional Manufacturer, 18 Months warranty!