Batteries

Batteries are electrochemical devices that store and convert chemical energy into electrical energy, serving as portable power sources for various electrical applications. They consist of electrochemical cells with positive and negative electrodes and an electrolyte. Batteries can be classified into primary (non-rechargeable) and secondary (rechargeable) types, with performance determined by factors such as energy density, power density, cycle life, and self-discharge rate. The selection of an appropriate battery type depends on the application's voltage, capacity, discharge rate, and environmental requirements.