Review (1/5): Where the heck is your quality control?
Look, I know I wasn't paying for the best device in the world at this price point. But when it comes to something as basic as converting a 9V battery to a direct current you would think they would be able to solder a basic board.
Look at these photos, this is all that is inside. It requires very basic soldering, and yet they somehow dripped solder right on the board, which shorts it, and said "Yeah screw it, send it, I'm getting paid anyway, I'll deal with the RMA later."
Such a shame, you'd think with such a easy job they'd be able to do it properly.
I'll be resoldering this myself, but the majority of people buying this won't be able to do this.