This is the second version of my battery holder. This holder is for those who like a nice tight fit. In fact it's so tight you'll need something to pry out the dead battery. That is if you measure it too small and don't allow enough room for the battery. This holder also has stronger tabs and uses less aluminum foil. But it uses more cardboard so I hope you have enough cardboard. The secret to the tightness of this holder is the cardboard that comes arond the ends. This instructable has been in the works for quite a while and should have been finished when I did version 1. But I'm so lazy so it didn't come out when it should have, yada, yada, yada. Also if you want to make this for a bigger battery you should adjust the dimensions accordingly. Any way, enjoy!
http://www.instructables.com/id/Battery-Holder-Version-2/