Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Telezapper Review

Earlier versions of Telezapper had an electric cord that you used. This version is battery operated (CR2032 battery). The model I received came with a dead battery. I had to buy a replacement battery, but once I did that, it worked great!So, if you buy one and it doesn't work, just get a new battery. CR2032 battery.