To accommodate the Internet of Things and let enterprises truly benefit from the promises it brings, companies must carefully consider which IoT battery is used in their applications.
An inside look at IoT battery options
Chemical batteries -- lithium, alkaline or lead acid -- convert chemical energy to electrical energy. A chemical reaction causes electrical ions to flow from the negative terminal (anode) to the positive terminal (cathode) of the battery through some kind of electrolyte. To recharge the battery, that flow is reversed and thus converts electricity back to a chemical form.
Lithium is the lightest metal and has the greatest power per weight ratio (called energy density, expressed in watts per hour per gram) of any chemical battery, thus making it suitable for items that are small, such as watches and IoT sensors. However, lithium-based batteries have some inherent problems, the major one being that lithium is volatile and can catch fire.
Alkaline batteries are a much older technology. They are the round, cylindrical batteries you have likely used for years. The electrolyte in an alkaline battery is manganese dioxide.