Specifications: 1) Type: Li -ion 2) Voltage: 14.8V 3) Capacity: 4,400mAh, 4,800mAh, 5,200mAh 4) Original battery code: a) 134110-B21 134111B21 135213-001 b) 135213-002 135214-001 135214-002 c) 205844-002 230608-001 Compatible with: 1) COMPAQ: 1018CL 1020US 1032AP, 1033AP 1034AP 1035AP, 1036AP 1037AP 1039AP, 1040AP 1041AP PRESARIO X1000, X1010US X1031AP 2) HP: Pavilion ZT3000, Pavilion ZT3001US, Pavilion ZT3010US 3) HP COMPAQ: Business Notebook NX7000/7010 All of our batteries are passed strict test, so quality is insured. We also can offer some of original batteries. Please contact us for further more detailed information.