If you haven't found instructions to assist you, you may want to find a locksmith in your area. Unsure which model that might be - many safes have copies of instructions online, including how to access a safe with dead battery, or using a key if it has one.

Examples of list of locksmiths in the United States:

http://www.savta.org/savta_tech.php

http://findalocksmith.com/