Modelling aids are not intended to be printed, but to provide a properly scaled mesh of common components to aid the 3D modeler in creating other items around them. This is a pair of AA batteries, a standard clip style container, and a 9v style lead with truncated wires. This model is intended to help those who wish to add space to a 3D print for electronic component batteries. Two AA batteries provide 3 volts of power, which is ideal for running most 5mm LEDs in parallel. Simply model a cavity into your mesh large enough for this to comfortably fit, and you will have a proper housing for your batteries when you print (don't forget to model a lid, or you'll never be able to get in there!).