I ended up getting a partial refund which I used to get the tools I needed to opening the VB for repair as well as obtaining a proper battery module.

The seller played smart as he knew there was no way around it but to cooperate in compensating me for what was not revealed about the unit.

It was a good opportunity to learn about how it works anyways, despite the end result not being very impressive, the technology behind the VB is - Did you know that there are no 'screens' for the lenses? The display is generated by a single row of LEDs that are reflected through a synchronised vibrating mirror to get the image. Without the vibrating mirror, it would just be a single row of dots.