This is a remix of Pixelle's Battery Case ( https://www.thingiverse.com/thing:2277526 )

I noticed that his pictures showed a two-color lid, but there was only one STL for the lid. A filament swap wouldn't do it, and I don't have a multi-color printer, so I wasn't sure how how he made what he photographed.

Anyway, I hacked the cover to be two pieces. If one is right side up and the other is up side down, you shouldn't need any supports. I also included Pixelle's original base here. All three are oriented properly for easy printing. I used white for the base, silver for the inside of the lid, and black for the outside of the lid.