Brother Mobile Printer PJ-763. I purchased this used some time ago and used it for a while. It seemed to work fine back then, but I haven't used it for about a year and had it in storage. When I tried it again recently, it doesn't seem to turn on. The orange lamp lights up when I connect the AC adapter, but I couldn't confirm any further operation. I hope someone with more knowledge can take a look at it. This listing is for the main unit and battery only. The AC adapter and USB cable (mini-B type) are not included. I used a general-purpose 15V adapter before, so please use that as a reference. Please understand that this is a junk item before purchasing.