Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Melts under the sun

First, there is no way to know whether this model is properly hooked up unless you happen to own a voltmeter.Second, there are no instructions showing you how to hook it up to the battery. The clamps came off the battery, but I think I just didn't do it right and when I laid them a different way they looked fine.BUT - the plastic casing melted when I left the unit on the dashboard! Hello - this is a solar battery but it can't be left in the sun?So disappointed because it got so many good reviews but I am returning it. I have left my car the same way under similar weather conditions for over 10 years, and I can guarantee you that the car never gets near the 175 degree maximum temperature rating in the instructions, which do not, by the way, suggest cracking the windows.I am returning it - my battery is now totally dead and I can't see keeping something which has started to melt after 2 weeks on the dashboard.