Rugged Meshtastic Node + USB Power Bank

I wanted a Meshtastic node that I could carry around in my backpack that would be as maintenance free as possible. This meant the case itself had to be rugged so I could throw around my backpack and not worry about the case cracking, and it meant it needed to have a long battery life so I don't have to charge it often. A rugged case, to me, means it has thick enough walls to take some abuse and a way to mount stuff inside so the internals are protected from impacts. The meshtastic and USB power bank boards are pretty tough with no large heavy components, so those can be hard mounted to the case. For the batteries though, I designed the internal cavity to fit the six 18650 cells (they're actually 18700 thanks to the built-in protection circuits) with a layer of foam around them. That way, they're a snug fit and the foam should reduce any impacts the case gets.Since I wanted a long battery life and this didn't need to fit in my pocket, I went overkill with the batteries,