Untested. Not sure of any kind of history with or even how it came to me for certain. If my memory serves me right... I was at a friend's house and pointed it out. I happen to have a fifth of bourbon. He said you can take that thing with you if I could share that bottle. 4 years later after Its hung out with me its time for someone to bring it out of retirement.  I can't say that it works but I've rarely seen them fail to power at least. No cords included. I think it's a good buy. Thank you