Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great then breaks

I'm on my 2nd one of these. It works great, but then the weak plastic tabs on the side break and the springs that make contact with the batteries force the top and bottom halves apart making it useless. The slots that hold the top and bottom halves together are VERY thin plastic and won't stand up to more than a battery change or two. I'm trying another brand this time. It looks like maybe they've changed the design on the newer ones, but I'm not taking a chance on this brand again.