Hp640-G2-Libat Specifications. Condition: Brand New Battery Type :Li-Ion Voltage : 11.1V Is Compatible With 10.8V Capacity:4400 Mah Brand: Unbranded /Oem Compatible Models. Hp Probook 640 G0, 640 G1, 645 G0, 645 G1, 650 G0, 650 G1, 655 G0, 655 G1 Compatible Part Numbers Ca06, Ca06Xl, 718677-421, 718678-421, 718755-001, 718756-001 Hstnn-Db4Y, Hstnn-Lb4X, Hstnn-Lb4Y, Hstnn-Lb4Z, Hstnn-Lp4Z What's in the box Laptop Battery