Lithium batteries are very popular in all kinds of projects, especially special projects. There are several options in the market, but buying certified lithium-ion batteries will provide you good performance. Assembling a battery from scratch can be somewhat premature, especially given the sheer number of tools required to build the battery.
The most common battery is Li-ion. This means you can find them in different strains, even though all of their characteristics are similar. They are usually inexpensive, safe if you don't abuse them, and have high energy density. Most of the electric vehicle manufacturers use this ion battery. This is one of the best options when you have a project
Li-Po batteries are common with R/C drones. Your level of performance is quite high. They can also be dangerous, especially if handled with care. You should only use this option when you need to run a high-performance project.
Compared to all other types of batteries, lithium-ion batteries are the best in terms of safety, price, and performance. This is why most people do their DIY projects with this type of battery.
It is important to choose the right type of battery for each project you are planning. There are several specifications you need to know to choose the right type of battery. This includes energy capacity, current, and voltage. When you add several batteries you are increasing the voltage to meet your needs.