I am trying to think of how to make the 'smallest' possible standard AA rechargeable size Nimah battery driven penstyle atty. I have found that RN 4072 work ok with 3 AA batteries and my idea is something like an arrangement in this picture......I just can't seem to think of how to make a simple case that would hold it all together, make the connections and have a button.

an arrangement like that would be small enough to be virtually completely hidden in my hand and have about 2 days of vaping out of charged batteries. It seems to me that a four AA battery box would have the potential to be modded but I can't seem to find one with that particular square arrangement for the batteries.

an arrangement like that would be small enough to be virtually completely hidden in my hand and have about 2 days of vaping out of charged batteries. It seems to me that a four AA battery box would have the potential to be modded but I can't seem to find one with that particular square arrangement for the batteries.
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