I received a rush charge universe not too long ago. I was able to try the product on my iPhone 8. I do love the product and how it set up. The only problem that I can think of is still the USB plug. I am finding that with my OtterBox Case your product is way too bulky. The only suggestion I can make is that you make the handle of the USB plugs a little bit longer so that the bulky battery pack of your product isn't touching the case. Kind of what you see in a USB charging cable. The only way I was able to actually use your product was when I was able to painstakingly remove my case from the phone. But I was able to do this at home. Don't think about what would've happened to my phone if I had to do that in public. Because I have a vision disability I have to have a hard case for my phone. And while it does protect my device it is so hard and complicated to remove it.
The only other additional suggestion I can make is that you create a USB-C cable for both ends instead of one for your product. So that one and of the USB-C goes into your product and the other and goes into the phone. I'm fighting with most USB-C cables it's only one end that you have available because the other goes into a wall unit. I hope that this review helps and I apologize for the late response.
Excellent follow through. Worked well with me to resolve my problem. Highly recommend the whole staff for their patience, support, understanding and professionalism.
I am very satisfied with the service from rush, on the replacement of my charger.