Which type of battery is most commonly used in modern aircraft?

The most commonly used batteries in modern aircraft are nickel-cadmium (NiCad) and lithium-ion batteries. These battery types have become favored due to their high energy density and lightweight characteristics, which are critical in aviation where every ounce contributes to overall efficiency and performance.

NiCad batteries have been used for many years in aviation due to their reliability and ability to withstand a wide temperature range. They have excellent cycling capabilities, making them suitable for the frequent charge and discharge cycles typical in aircraft operations.

On the other hand, lithium-ion batteries are gaining popularity because they offer even higher energy densities than NiCad, allowing for more power in a smaller and lighter package. This reduction in weight and increase in efficiency are essential factors in modern aircraft designs aimed at improving fuel efficiency and aircraft performance.

While lead-acid batteries were historically used in aviation, they are now less common because they are heavier and have lower energy density compared to NiCad and lithium-ion options. Sodium-sulfur and silver-zinc batteries, although they have specific applications, are not widely used in aircraft due to their limitations in energy density and operational constraints.