P500 Gauging Interest: weather-resistant under-seat storage box for Pioneer 520 and Pioneer 500

[Vyza]

I currently own Honda's version, but I don't like how it tapers from the opening down towards the bottom. I want to store a secondary battery in it, but it really doesn't fit without heating the plastic and forcing the battery down into it.

Does your design offer straight vertical walls? What are the interior dimensions?

Although I also believe that the price point is a little high, I would probably buy it if it fit a battery for a cleaner look.