Driven by integrated functionality and shrinking form factors, the demand for portable devices, such as cellular phones, PDAs, and DVD players, has grown significantly during the last several years. These portable devices need rechargeable batteries and peripherals that must be replaced before the life of the portable devices expires. This has opened a huge market for counterfeiters to supply cheap replacement batteries and peripherals, which may not have the safety and protection circuits required by the original equipment manufacturer (OEM).