This organization, Christian Technology Center, at http://www.the-ctc.org/index.htm has developed a battery powered video projector after a lot of research.
More info is at http://www.the-ctc.org/products.htm.
For more information on the product or to buy it, please go to http://www.faithcomesbyhearing.com/ and click on the link “Acclaimer” on the home page. It will take you to this web page: http://www.faithcomesbyhearing.com/acclaimer-portable-video-player.