Solar System Setup for Transit

There seems to be a fair bit of discussion on Solar System setups (panels, batteries, cabling, mounting, etc) throughout many of the threads on this forum. Rather than wading though all the build threads, perhaps we can consolidate & share info on solar/electrical system design/setup for those looking to power their VANlife. Here's a few items to get it started:

> Considerations/design criteria/application for your system
> Rack/mount system, materials/products used, and attachment method to van
> Solar Panels (watts, size, other considerations for choice, etc)
> Cabling (type, wire gage, connector types, routing/roof entry point, etc)
> Charge Controller & monitoring system (product, where mounted, etc)
> Battery Bank (Amp*hour, battery brand, dimensions, where mounted, etc)

What did I miss? Fire away!