#li-ion battery

You've probably noticed that they also differ in composition: There are those that are built with Lithium-Ion (Li-Ion) and those with Lithium Polymer (Li-Poly). There were the nickel-cadmium and nickel-metal-hydride, battery types which powered the mobile devices of the 20th century. Lithium-Ion (Li-Ion) Then came Lithium-Ion, a type of battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging. Development for Li-Ions started as early as 1912 but were only popularized in the 90s when Sony and Asahi Kasei first released them commercially. Li-ion batteries have high energy-densities. Their capacities can generally be up to twice than that of Nickel-Cadmium ones, and cost usually less to produce and requires low maintenance; hence, most affordable phones are produced with Li-ion batteries in tow. They also have a relatively low self-discharge compared to other batteries, and does not need priming* since it is not a nickel-based battery. *Priming is a conditioning cycle that is applied as a service tool to improve battery performance during usage or after prolonged storage. Read more in our articles including "Battery 101: Intro to Li-Ion and Li-Poly" and "Samsung’s Galaxy Flagship Lineup: Which One Fits You Best?".