Warranty 1 Year Voltage 10.8V Battery Type External Cells 6 Cell Cell Type Li-ion 18650 cell Battery Capacity 4000mAh Watt-Hour 43Wh Compatible with ASUS?A52,A52 Series,A52F,A52J?K42 Series,K52 Series,K52JE,K52JK,K52Jr,K52jr-a1,K52jr-x2,K52jr-x4,K52jr-x5