Wanted to use the Oculus Go a bit longer than I got with the built-in battery, and got me the Anker power bank: https://www.amazon.com/gp/product/B005X1Y7I2
To feed the power directly into the Oculus Go while using it, I designed and printed a mount for the Anker, connected with a short USC cable (https://www.amazon.com/gp/product/B013G4EAEI).
This mount perfectly fits around the front mount of the head-strap and doesn't move or slide at all. The Anker power bank fits snuggly into the mount and is kept in place by some pressure lips. This keeps the Anker from sliding while using the Oculus Go.
The USB port is on the Oculus Go on the left side, so you probably want to print the left one. However, if one power bank isn't enough for you, there is also the right version. You just have to get a longer USB cable.
Print vertically with supports
Overview of all iterations (from left to right), including the final version. This was my first design, and I learned a lot along the way.
The first print was too thin as it only had a 1mm wall thickness. The pressure lip was not very strong and the whole thing looked very flimsy. I stopped the print half way through.
As the pressure lip wasn't strong enough in the first version, I reduced the size to increase the pressure. However, I also increased the wall thickness to 2mm which made the pressure lip now too strong; I had difficulty to push the battery in. I added some bigger overhangs at the Oculus mount side to keep it clipped in.
- I increased the size of the mount to be able to get a bigger pressure lip to get the perfect amount of pressure on it. It also helped to give more friction overall, keeping the battery in place. I reduced the size of the overhangs as it was difficult to get it clipped in to the Oculus Go.
With this print, I made multiple changes:
1.1. The pressure lip direction was changed so that the lip was oriented horizontal when printed to give more strength to it. The previous print lips were very brittle as they easily broke off along the layers.
1.2. I added a loop to the Oculus mount side. Previous versions were sliding when I looked down or up. This kept it the mount in place and the pressure lips kept the battery in place.
1.3. The overhang to clip it to the Oculus got even smaller. With the loop forcing the mount to be closer to the Oculus headset, it was more difficult to clip it in.
I made two changes to that design:
2.1. I again changed the pressure lip size to get the perfect pressure on the battery, making it easy to add and remove, but also keeping it in place when using the headset.
2.2. At the far end of the loop, the headstrap on the Oculus was in the way. I added some notches on both sides to accommodate for that.
- In the final version, I realized that I had printed the mount on the wrong side (right, not left; go figure). I also changed the length of the far side notches to make a better fit and getting the mount clipped in perfectly.
Now, the mount clips into the Oculus Go perfectly and with ease, while keeping the mount and battery from sliding around while using it.