Hailong E-bike battery adapter for Gazelle Orange (Pure)

This is an adapter for the China Hailong e-bike Battery case made to fit the Dutch Gazelle Orange Pure bike.

I did not want to drill 2 extra holes in my frame to fit 2 M5 rivet nuts as I want to keep the setup upgradable in both battery and bike aspect.
I decided to create an adapter that uses Zip-ties to the top of the down tube and 2 bolts to the bottle holder on the frame. the shape of the adapter keeps it from moving and creating excess force on the original bottle holder nuts.

The