Do you have a pile of used household batteries hidden in your junk drawer or in a coffee can in the garage? You know you should be environmentally responsible and recycle them, but you aren’t sure where to start. So the pile grows larger. But did you also know that extra precautions are required when storing and recycling them? Some batteries retain a residual charge even after they can no longer properly power a device. These batteries may appear dead but they can be a safety risk because their power has not been completely used up. Some batteries can combust