A car jump starter, also known as a “car emergency jump starter,” is a portable power supply that combines power supply and charging functions. It can be used to emergency start a car when it stalls or breaks down and cannot be started, and it can also charge mobile phones, tablets, and other digital devices anytime, anywhere. It typically uses lithium-ion batteries as its energy storage unit, and compared to mobile power banks for phones, car jump starters have a larger capacity and are more convenient and easy to use.
A car battery is a type of battery, and typically, when people refer to a car battery, they mean a lead-acid battery. This is a type of rechargeable battery primarily made of lead and its oxides, with sulfuric acid as the electrolyte. Car batteries need to be charged to function properly, so why do car batteries lose their charge?