I have 7 stations and the non -solar grind through the batteries. I had been putting in a standard battery that I got from the Battery Station in Missouri, they have a lithium that I have been using and I got to the end of my supply and decided to give BatteryJunction a shot as someone mentioned it here.
I opted for tht Titanium Innovations CR123A 3V Lithium Photo Battery 1400mah, http://www.batteryjunction.com/tpen-tcr123a-.html
I read the test results on the site as well as others and considering the fast drop out rate, I will give them a try anyway and see . I am home for the year, I think and if the battery is a bust, I can always upgrade.
I think it is the type or brand or country of manufacture that seems to have something to do with how quickly these batteries deplete and of course on a station that can produce interesting questions.