Hey....I'm sure you've researched this already, but I have 3 Wildgame Innovations cameras and had the same battery issues with them. I bought the external battery pack that plugs into them. They are rechargeable and last a long time. I charged them all up in July and they are still out and I check them once a week. The meter in each is down to about half now.
Just thought you'd like to know. They're between $30-40 on Ebay if you think you'll get some.
Cool pics. Good luck!!!