Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy it!

I bought this for my 5 year old son for Christmas. When I bought it there was no mention that we needed a special battery but when you open the box and read the instructions you find out it comes separately. After Christmas I ordered a battery pack that was shown as a suggested item on the website, turns out it was the wrong battery. It is now almost 4 months later and the toy has not been used.