Swytch V2 battery seatpost/rear mount

Based on a Swytch battery frame mount I found on Onshape (https://cad.onshape.com/documents/55b6d4819fbbf651a3c78e27/w/9858a558a23b80a7bec6605f/e/88cbf8ed34d21ea0064c18b0), I've redrawn it to make it suitable for a seat post rear mount.

The bike rides much better without the weight of the battery on the handlebars and there's now room for lights etc. if needed.

I may relocate the controls later but as the Swytch batteries are low capacity, I tend to ride with it permanently set at min power. That said it's pretty easy to reach behind the saddle and tweak things if needed.

Prototype print was PLA, but final print was in ABS for strength.