one final (slightly intoxicated, Friday evening) thought - i don't have much of an eye for alignment and got the rivnuts out of line on my hydroformed frametube - now my battery is angled to one side by about 20%. it doesn't look good at all, but everything is still stuck tight after many fast potholed months. aesthetics aside, isn't there a way to rivnut the battery at an angle, perhaps on a vertical frame tube so that the forces of the vibration hit the battery vertically?Thanks for the insight. I dont fully understand what you were trying to explain but brittle and not like to be vibrated isnt what i want for holding on a 3.5kg battery!
The reason i cant rivnut is because the space for the battery in the central triangle of the frame is so tight. There is not enough room to be able to take the battery off of the battery holder that screws to the rivnuts. So there is no way of actually screwing it on. ...