Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Battery problem

I bought this for my son at Christmas. Although he loves the toy, it has a battery problem. At first I thought it was the batteries I was using so kept changing them out, but then realized that the batteries move just slightly off the connectors while in the toy which causes the toy not to work. Very annoying to have to keep making sure the battery is pushed in to get the toy to work.