5 AA Cell stackable pack

4 NiMH cells just aren't enough to power the arduino and sensors that I want to use. 5 might do.

I designed this 5 AA cell holder to hold rechargeable cells and power my Arduino projects.

I first tried using the well designed battery pack - http://www.thingiverse.com/thing:5079 - but had problems with the clearance necessary to allow for the bolt head contacts. The bolts and washers are additional components that I don't want to have to use for batteries.

My design uses solid copper wir