In the aluminum devices used in new energy vehicles, from the perspective of their power supply, there are currently many types available on the market, which can be classified as lead-acid batteries, lithium-ion batteries, nickel-metal hydride batteries, and capacitors. Among them, capacitors are mostly presented as an auxiliary power source in the devices of new energy vehicles. The main reason for this is that the technology of capacitor batteries is not yet mature and there are some drawbacks. Compared with traditional vehicles, new energy vehicles using lithium batteries have significant differences in terms of power cost and range. This is also an important factor that currently restricts the development of lithium devices used in new energy vehicles. Next, the editor will introduce through this article what types of power sources are available for the aluminum devices used in new energy vehicles? 

In the aluminum devices used in new energy vehicles, the power source lead-acid battery is a type that has been developed for a long time. This battery uses metallic lead as the negative electrode and lead oxide as the positive electrode. During the discharge process of the battery, both the positive and negative electrodes will produce a sulfate. The acidic substance can act as a reactant in the reaction process and also as a product in the reaction process in the electrolyte solution. In recent years, the research and development of lead-acid batteries have mainly focused on their application in hybrid electric vehicles. 
The nickel-hydrogen battery operates by releasing and absorbing hydroxide ions at the hydrogen metal negative electrode and the nickel oxide positive electrode. In the past, nickel-hydrogen batteries were regarded as a preferable option for lithium devices in new energy vehicles. However, their energy density cannot meet the energy density requirements of electric vehicles. Moreover, due to the high content of nickel metal in nickel-hydrogen batteries, their cost is relatively high, making them an unreliable choice. 
Lithium-ion batteries are one of the most commonly used types of power batteries in current aluminum-based devices for new energy vehicles. This is because they have a high energy density and the power output of individual cells is relatively high, which enhances the competitiveness of lithium-ion batteries. 
If the battery needs to provide both long-term storage capacity and short-term pulse power for the starting of the aluminum device in the new energy vehicle or for vehicle acceleration, a compromise solution needs to be adopted in the battery design. In each battery cell, more electrodes need to be used to increase the total surface area. The increased current is distributed over a larger electrode area, ensuring that the battery voltage drop meets the system requirements. If the power demand can be provided by other devices, the battery can use thicker electrodes, achieving energy storage requirements at a lower rate while maintaining better durability.