The growth has been in secondary batteries (rechargeable) but non-rechargeable or primary batteries are equally important. They continue to fill an important niche market in applications such as wristwatches, remote controls, electric keys and children’s toys. Primary batteries also assist when charging is impractical or impossible, such as military combat, rescue missions and forest-fire services.
Batteries come in all shapes and sizes and there could be as many types as there are species of dog. Rather than giving batteries unique names as we do with pets, we distinguish batteries by chemistry, voltage, size, specific energy (capacity), specific power, (delivery of power) and more.
This article begins with the positive traits of the battery, and then moves into the limitations when compared with other power sources.
The battery market is expanding, and the global revenue in 2009 was a whopping $47.5 billion.* With the growing demand for portable electronics and the desire to connect and work outside the confines of four walls, experts predict that this figure will reach $74 billion in 2015. These numbers are speculative and include batteries for the electric powertrain of cars.