Battery Options And System Design Considerations: A Comparison Of Primary And Secondary Battery Systems For Handheld PC Devices

摘要

Determining which type of battery is best for a given product depends on which performance parameters are the most important for the application. This paper helps identify the important performance characteristics of the main battery system in handheld PCs (HPCs). Characteristics discussed include system self-discharge, thermal capabilities, internal operating impedance over discharge, cycle life, and product safety. The discussion includes the advantages and disadvantages of primary (alkaline) and secondary (rechargeable alkaline, lithium-ion, and nickel-metal hydride) chemistries in HPCs. It also looks at contact theory and circuit design options that can increase reliability in any battery-powered product.