This is a battery case design for Land Surveying. It is for three LiPo cells http://tinyurl.com/mpsxyq6 to be contained and has the attachments for a standard Geodimeter / Trimble charge plate. Two blank plates are printed with it, but, the Geodimeter plates will slide right in. The printed charge plates are 1.9 mm thick.
You will need six #8 sheet metal screws, four 1" long and two 1/2" long.
I dyed mine orange with Jacquard iDye Poly dye #448 http://tinyurl.com/luax6ho and then sealed the color onto the printed plastic with an acrylic floor shine