EDLC can and should be bought in the case when short-term powerful pulses are possible during energy consumption. Similar cases are quite common. Examples can be found right before your eyes, including in household appliances.
Back in 2004, Japan began testing combined energy sources (a battery and an ultracapacitor connected in parallel). They were installed in cell phones, cameras, laptops and other equipment. Of course, due to the installation of such an energy storage device as a ultracapacitor, the price of electronics rises. However, the battery is freed from peak loads, and its service life is extended by 1.5-2 times. In addition, ultracapacitors increase the overall security of the system.
One of the most obvious areas of use of modern energy storage is public and private transportation. In cars, the use of a combined system is also recommended. In this case, it is necessary to buy a ultracapacitor due to the fact that it starts the engine better than the battery. At the same time, the battery remains necessary to provide the machine with electricity.
It is necessary to buy an EDLC for a car not only because it provides the necessary starting current. This element will work in other cases when high-power impulse coverage is required. For example, here we are talking about accelerating a car or turning on loud bass in an audio system. The battery in this case can be made much smaller. It will satisfy other needs that do not require peak power, but a constant supply of energy for a long time.