3d printing. Bah, you kids.
Back in my day we cut off a can top and stuck it on there... and that was good enough for us! We liked it!
Why I put the cap on there is I ride through rain a lot, and sometimes very heavy. And every time, the stock port cover lets in water. Seems like it would work. I don't blame the Zero engineers for thinking it would. I don't know how water gets in there. But the fact is, it doesn't work.
And always, I would stand there hyperventilating, blowing hard into the port with my mouth, and looking even more like an idiot than normal, to get the water out enough before hooking it up at work. There are two pins in that group that have a 2500Hz square wave on them, telling the bike how many amps it can pull. So I thought, if water bridges the line voltage pins to those signal pins it might be damaging to my bike or the station or both.
A couple days ago I was in the same situation, pulled up to work and my port is again a cup of water. For some reason, I said F it and put the charge handle in anyway, and went in to work. About an hour later, Chargepoint showed that station had gone offline. They could not reestablish communications with it and put it on a watchlist or something that means it is in queue for repair. Coincidence? Maybe, maybe not. The bike still charged.
So..... cap.
No more bike BJs, and hopefully protect the equipment.