A couple of years ago, at ShootNYC there was a company there that was showing, batteries which had regular plugs (like wall socket) in pelican cases that they were selling as portable re-charge stations for I guess, battery charged lights and camera batteries and running computers etc, I know there are lots of things online about how to make your own, but there was this company that actually made them, however I can't seem to find their card or name, does anyone know what I'm talking about or a similar company? thanks,