Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Serious Fire Hazard

I bought this unit in March 2011 having read most of the reviews and comments regarding the overheating. My assumption was that the issue had been taken care of with the new adapter. Wrong! After charging beautifully for the past three months I went to retrieve some batteries, only to find the charger actually melted and built up so much heat that the batteries came apart and one was actually venting gas when I went to take them off. I had a Maha charger for over four years that finally bit the dust but never like this. I would stay far away from this defective product.