I always change the batteries in my household smoke detectors during the time changes. Last year while doing this task I had the fresh batteries in my front pants pocket. When changing I would place the old battery in my shirt pocket and and replace it with a fresh one from my pants.

Later that morning I felt my shirt pocket was getting warm and discovered that one of the nine volt batteries had shorted out against another. I removed them from my pocket and just for the heck of it I snapped two of the batteries together. Within only a few minutes they became too hot to handle.

I got to thinking that could be a fire hazard if they got together in a trash can. I now put electrical tape across the electrodes before discarding.

This has nothing to do with shooting but just something I wanted to pass along to everyone.