The wireless revolution, the prolific use of PDAs, MP3s, MP4s, Laptops, Cell Phones, Smartphones, DVD players, and other portable devices have increased the need for smart and high capacity portable batteries. Portable batteries however are not typical in design. Indeed the battery that powers your portable device is what is known as a smart battery and as such the internal system design of a smart battery is more complex then most people realize. Let's look at what the internal design of your portable battery looks like!

To begin with high powered portable devices require an electrical current. There are two types of electrical current (direct current flow and alternating current flow). Direct current means that the flow of charge is in one direction. A battery produces direct current (DC) because there is no way to change the + and - you see on the battery.

In order to create direct electrical current electrons must be caused to break away from atoms to create an electron flow. Why? The answer is because electricity is a property of certain subatomic particles (protons, electrons, and neutrons) which couples to electromagnetic fields and causes attractive and repulsive forces between them; by doing so an electrical flow is created, and this is where electricity comes from. Let