Instruct: Classify a review as either positive or negative.
Query: May be a fire hazard.

I have owned these phones for about two years now and have been generally pleased with them. However, this evening they stopped working and when I opened the battery compartment, one battery was so hot that it actually melted the plastic in the compartment. This is not good. I probably could continue to use these phones, but elect not to do so for fear of causing a fire. I do intend to look into this further.