Well, maybe the electrical storage units in your stuff are called "batteries", but the ones in my stuff are called "Henry, Frank, Lucille, Eloise, Bob, George, Mary, Jane, etc.". They get very upset if I call them "batteries" and insist on being addressed by name. And if I get their names wrong, they stop working. It's really a hassle 'cause they all look pretty much alike. I bought a 20-pack of AAs a few days ago and had to learn all their names before I even broke the seal on the package.