Abstract
The chapter reviews battery technologies. The chapter explains the way of selecting a correct battery for application. One of the primary challenges when one put together a battery-powered system is determining the power-management strategy. Beyond the selection of the battery, where chemistry, charging methodologies, protection, and fuel gauges are major concerns, the selection of the power conversion strategy has a significant effect on the dynamic performance and efficiency of the system. The chapter evaluates the various hardware techniques that convert the battery voltage with power efficient hardware. The microcontroller programming tricks that further reduce power in a circuit are also described in the chapter. The chapter highlights clocking tricks and power down tips that can be implemented in software. An example of combining microcontroller programming tricks with analog power supply management is also provided in the chapter. Batteries fall into two fundamental categories: primary cells and secondary cells. The difference between these two types of cells is their ability to recharge after use. The primary cell battery is not rechargeable, whereas secondary-battery cells are rechargeable.
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