Using a battery boost converter in a design makes it possible to operate the system on a single battery, where earlier designs relied on two or more batteries. Therefore, the ability to operate a microcontroller on a single 1.5V battery is becoming increasingly valuable in a growing number of applications, in order to reach even smaller sizes. While portable, battery-powered products keep shrinking in physical size, their overall size is becoming more and more limited by the size and shape of the battery cavity, which may house two or more batteries. They provide high-reliability operation, are 33% lighter than alkaline batteries, and have a long shelf life of up to 15 years (2 to 3 times longer than alkaline batteries). Lithium cylindrical batteries are available in AA and AAA form factors, and are best suited for applications that exhibit a medium to high drain rate or need to be used in cold temperatures. They are widely available and inexpensive, compared to the other primary battery technologies, and they are available in three compact form factors: AA, AAA, and the smaller AAAA package (as well as larger cylindrical and 9V forms that are less relevant for this article).
#Aaaa battery mass portable
Alkaline cylindrical batteries are suitable for a wide variety of portable devices that exhibit a low to moderate drain rate. Two primary battery technologies that are available in a cylindrical form factor are alkaline and lithium (LiFeS2). Lithium coin batteries (typically Li/MnO2) feature packages in 13 different sizes that fit within small and lightweight devices, such as timers and watches, which use relatively low amounts of energy and need a long shelf life on the order of seven to 10 years. Each battery option targets different types of devices and use cases (Figure 1). There are a number of popular battery technologies, such as alkaline and lithium batteries, that are available to developers who are designing primary batteries into their projects. Whether the device is a blood-glucose meter, computer accessory, camera or wireless headphone, battery-powered products continue to become physically smaller as each iteration of their design enters the market. Rechargeable batteries can be a good option in devices that are used frequently and operate at higher drain rates, but for many applications, primary batteries are the best solution because they support simpler and lower-cost implementation options that enable a truly portable device. Successful battery-powered products in all of these markets require intelligent control, maximized battery life, as well as minimal size and weight that support device portability. The market for battery-powered applications is vast, lending itself to a multitude of products in the consumer, medical, personal-care and entertainment market segments.
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