18650 Batteries: Small in Size, Big in Performance

26 Aug.,2024

 

Batteries: Small in Size, Big in Performance

What is an Battery?

On first hearing, the term " battery" may sound intimidating - technical, complex and for technicians only. However, in reality, the concept behind this name is astonishingly simple. The designation '' is a direct representation of the physical dimensions of the battery: a diameter of 18mm and a length of 65.0mm. The '0' at the end indicates that the battery has a cylindrical shape.

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These compact and powerful energy packs are of the lithium-ion type. Lithium-ion technology is widely regarded as a revolutionary breakthrough in energy storage, thanks to the high energy density, long life and minimal self-discharge of the batteries.

The batteries are characterized by their versatility and have firmly established themselves in a wide range of applications. Thus, they have become an essential part of laptops, reliably supporting the computing power of these devices. But their applications extend far beyond portable computers.

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In the world of flashlights, batteries are a popular choice due to their endurance and high capacity, resulting in longer burn times. Electric vehicles, from e-bikes to fully fledged electric cars, have also benefited from the benefits of batteries. Their high energy density makes them ideal for applications where space and weight are important considerations.

While they may be unknown to the average consumer, batteries have quietly become indispensable in our everyday technology. They are the silent heroes, unobtrusive but crucial, in supporting our digital and increasingly electric lifestyle."

Battery Guide - Maytown

A battery comprises three main parts: the anode (negative electrode), the cathode (positive electrode), and the electrolyte.

The anode is made up of lithium metal. The cathode usually comprises a transition metal oxide, such as cobalt or manganese. The electrolyte is an alkaline solution that aids in the movement of electrons between the cathode and anode.

The anode and cathode are connected to an external circuit when the battery is in use. This circuit allows the electrons to flow from the anode to the cathode. As the electrons flow through the course, they generate electricity. When it operates, both high charge and high discharge rates are available from a battery. This is made possible by using a thin film of lithium metal on the anode. The lithium metal can rapidly release and absorb electrons, allowing for high charge and discharge rates.

The main advantage of using a battery over other types is that it has a much higher energy density ad a low self-discharge rate. Indicating that a battery may store more energy than different batteries and retain its charge for longer when not used.

The battery is also much safer than other types of batteries. The reason is the lithium metal used in the anode is much less reactive than other metals. So it makes it much less likely for the battery to catch fire or explode.

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