Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This might be a good charger, but MINE WASN'T!

When I got this item in the mail and opened the package, it looked like it had been thrown down a flight of stairs. The case was warped, the face plate barely held on, and the bottom was so bowed out that the unit wouldn't sit flat on my shop counter. The box was in pristine condition. Somebody bought this item, demolished it, and sent it back in for a refund. Obviously nobody checked it when it came back in...2 seconds would have told them it was probably broken. And it was. I was using it for anodising, and it totally ruined the parts I was working on because it only put out 10 amps instead of 30 (on both settings), and stopped working completely after 40 minutes.One thing I will say about Amazon is that they did give me a full refund, which I appreciated...but there should have been someone checking the returns! How many other people are going to get sent this same charger? When does it stop being "NEW IN BOX"?