• Full compatible with your original battery,brand new from Professional Manufacturer, CE RoHS certified,grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability
• Battery for HP Pro Book 640 645 650 655 G0 G1, fits Hp Spare 718677-421 718678-421 718755-001 718756-001 HSTNN-DB4Y HSTNN-LB4X HSTNN-LB4Y HSTNN-LB4Z HSTNN-LP4Z
• Expected operation time: 1.5-3 hours. This may vary, depending on device type and the way it is used.
• 24 x 7 Email Support service.We provide best prices possible on the highest quality products and the most popular brands. Please check if this battery is compatible with your computer before purchasing.
• Fits models: HP CA06 CA06XL 718677-421 718678-421 718755-001 718756-001 HSTNN-DB4Y HSTNN-LB4X HSTNN-LB4Y HSTNN-LB4Z HSTNN-LP4Z
• More Part numbers of compatible batteries and Computers are listed as following

Direct from Manufacturer. High performance. Factory price!

Safety and Excellence Features:
Efficient and Reliable
Grade A Cells
FCC / CE / RoHS Certified
More Charging Cycles
Long Lasting Performance

Can Replace Part Numbers:

HP
CA06
CA06XL
718677-421
718678-421
718755-001
718756-001
HSTNN-DB4Y
HSTNN-LB4X
HSTNN-LB4Y
HSTNN-LB4Z
HSTNN-LP4Z

Compatible Models:

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

As this replacement battery can fit many models and part numbers, the factory cannot mark all the compatible part numbers on it, please understand.
If you have any problems, please contact us by the message, we will help you within 24 hours.