Hey guys, I designed this battery holder and greatly appreciate your reviews and criticism. I have had this in my ski for about 5 rides so far since the weather has been nice only a few times here in NC. With this being said, the model that was posted hasn't yet seen failure but that doesn't mean that it wont. According to some information that I have read, these batteries include both internal vibration dampening as well as the rubber bottom. I have reached out to a NOCO engineer in regard to the concern, however, considering the insight of Batteryman and a few others, I have modified the design the incorporate an 8mm thick neoprene foam pad for additional vibration dampening. I also think that unless you need it, it may be good practice to remove the gold colored terminals to keep the battery connectors shy of the top of the battery housing to prevent anything from being able to short the terminals in the event of a loose battery. As far as selling goes, I do agree that insuring the reliability and longevity of the product should be a priority so I have designed two separate "torture test" machines to really push the design. My plan for this is to induce sustained vertical and lat/long stresses independently using a printed, weighted, dummy battery that will be exceptionally heavy with respect to the mass of the actual battery. So far, I am glad to see the communal discussion and excitement and I hope that this can be a product for many to enjoy. Here is a pic of the updated design iteration currently being printed:
