Battery storage, bullet storage, parametrized, stackable

Please always do a test print of a single battery slot to verify the dimensions before printing a whole holder. Especially check the hole for the pin on top of the battery, or it could guide to a short circuit and cause damage or fire!

Yet another way to store your batteries. Inspired by bullet storage I've seen in my childhood. I tried to make it use as little plastic as possible, so if you select different configurations of rows an columns, the holder walls would differ a bit, but the general idea was to use the close hexagonal stack with just the triangular pillars in between each three batteries. The outer wall is optional (added that only for extra rigidity and a slicker outer surface. Never printed it myself so far, though).
I've included sizes for the most common battery types. But they can be wrong - different producers make different sizes, especially for the LiOn bateries.

Should work for bullets as well, with the tip of the bullet pointing up. You will have to use custom