Would love to know how you access the historical logs..For the Square style you are asking about I might be able to help.
The battery pack is only used for holding time and date and current password so you can actually get by without it. The alarm log and intrusion data are also stored in the memory but you don't need historical logs unless you're checking to see when others accessed the safe and how many failed attempts were made to get inside.
If you guys are stuck but have both of the factory keys then shoot me a note and I'll get you reprogrammed with new codes and time and date.