Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The worst power inverter I've seen yet

First off, this thing was almost too long to fit between the "lighter" and other parts of the vehicle. I bought this to power my laptop on a trip, and it worked fine on the way out. On the way back though, the power kept cutting out randomly as said in another review. When I unplugged to, it fell apart. For the rest of the trip it kept falling apart, and eventually I lost the internal spring and couldn't re-assemble it. It was the worst thing I have ever bought