Customizable Battery Tray with full/empty label

Walter's beautiful battery tray with labels for empty or full batteries: on one side, it has a writing "full" or "empty", on the other side it has a full or empty battery icon.

Needs Write.scad and orbitron.dxf font.

Update 2013-03-25: slightly thicken the battery icon and the label so the contours get printed better on very quick prints