Which of the following battery types has the highest energy density?

Lithium polymer (LiPo) batteries have the highest energy density among the options listed. Energy density refers to the amount of energy stored in a given volume or mass of a battery. LiPo batteries are particularly favored in applications such as drones and electric vehicles because they can store a significant amount of energy relative to their weight and size, which is particularly advantageous for maintaining longer flight times and improving overall performance.

The chemistry of LiPo batteries allows for a relatively high voltage per cell, contributing to their efficiency in converting stored chemical energy into usable power. This is essential for applications that require lightweight and compact power sources. The lightweight nature, coupled with high energy capacity, makes LiPo batteries a preferred choice for many modern electronic devices and aerial systems.

In contrast, other battery types such as Nickel-Metal Hydride (NiMH), Lead-Acid, and Alkaline batteries generally have lower energy densities, which limits their use in applications where weight and volume are critical. For instance, while NiMH batteries are better than Lead-Acid regarding energy density, they still fall short of the high performance offered by LiPo batteries. Lead-Acid batteries are bulky and comparatively heavy, making them less suitable for applications requiring a lightweight power source. Alkaline batteries