26*** Battery Carry Case

This is a screw top battery carrying case for a battery that are 26mm width. There are versions for the 26650, 26800 (shown in the photos), and 26350. It has a screw top with an optional O-ring seal (I used the O-ring that came with my D4sV2). This is to make carrying battery and storing them easier. If the screw on lid is tight initially or wont go on all the way work it in and out until it grinds the threads out.

Disclaimer:
One important note is that lithium ion batteries are dangerous and I don't claim that this design improves the safety of these batteries. Use this design at your own risk.