ZTHY CA06 CA06XL Laptop Battery for HP Probook 640 645 650 350 655 G1 G2 G0 CA09 CA09XL CA06055XL 718677-421 718678-421 718755-001 718756-001 HSTNN-DB4Y HSTNN-LB4X HSTNN-LP4Z (10.8V 55WH 4910mAh) Battery type:Li-ion. Color: Black.Voltage: 10.8V. Capacity: 55WH / 4910mAh / 6-Cell Replace Part Number: CA06 CA06XL 718677-421 718678-421 718755-001 718756-001 HSTNN-DB4Y HSTNN-LB4X HSTNN-LB4Y HSTNN-LB4Z HSTNN-LP4Z Compatible for:HP ProBook 640 G0, HP ProBook 640 G1 HP ProBook 645 G0, HP ProBook 645 G1 HP ProBook 650 G0, HP ProBook 650 G1, HP ProBook 655 G0, HP ProBook 655 G1 Series All ZTHY products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety. ZTHY Laptop Battery Warranty: 12 Months Warranty, 30 days money back guarantee. With Hassle-free Customer Service