7.4V lithium polymer batteries have a unique application status among numerous electronic devices. In terms of capacity specifications, there are abundant choices, covering various models ranging from smaller capacities to larger ones. In practical applications, some medium-power handheld devices such as some drone remote controllers may adopt 7.4V lithium polymer batteries. With their moderate voltage and appropriate capacity, they can provide stable and continuous power support for the devices. Compared with 3.7V batteries, they can meet higher power requirements, and compared with batteries of higher voltages, they also have certain advantages in terms of volume and compatibility, occupying an important position in the field of battery selection for electronic products.