Holds up to 12 AA batteries in a compact tabletop hopper. The batteries go in the top and are directed to the bottom of the hopper by 3 ramps. I want to make the next version automatically charge the two batteries at the bottom of the ramp and would love input and thoughts on this idea.The entire thing can be printed without support. Note that BatteryHopper.skp has both sides defined as components. In order to print the model you'll need to "explode" them so they're attached to the ramp base. For some reason I couldn't get it to print it correctly without doing this.