I agree that this is Verizon responsibility to replace the battery. I did buy battery from Verizon(stupid me) for $43 plus $8 shipping.
However, I really cannot find the way to open battery compartment. I think it is probably screw some where on the side, but I cannot see it. I did call Verizon so called support and lady answered that all customers know as how to open the battery compartment. They "support lady" suggested to connect me to the main office. The lady on the in the main office said that she needs to reboot computer and promised to call me back. She never did.
After reading this forum I understood that I really do not need a battery and I am going to return the battery back.
Thanks for information.