Print-in-Place Battery Case (customizable)

Specify the diameter and thickness of the battery. Then specify rows and columns to determine the number of batteries the case can hold. Optionally add and size text to label the battery case, and choose options such as keychain ring, or peepholes to show how many batteries are left without opening the case. 

• support for smaller diameter batteries
• simplifies geometry for peep-holes (removed overhang)
• removes old versions of peep-holes (simplifies configuration)