Lots of products use a battery as the primary power source. Of course, we all know about the “i-something” products with the fruit logo on them. However, there are plenty of less glamorous products that serve equally deserving applications that also use batteries. I am talking about portable medical devices, industrial sensors and even rotating or moving equipment. Unlike the benign consumer environment, these applications have more stringent requirements such as the need for sterilisation and even the potentially explosive surroundings like those commonly found in oil refineries and chemical processing facilities.