Instruct: Classify Amazon reviews into positive or negative sentiment
Query: piece of junk

i know it only cost $3; but it wasn't even worth that. tried to charge my blackberry using my car charger and adapter in a wall outlet for over 3 hours - no charge. i plugged in the charger in my car and after 1\2 hr it was 50% charged. the adapter isn't work worth a wooden nickel, honest.