5 Interesting Facts About Aircraft Batteries

Aircraft batteries differ from car batteries in many ways. These batteries are primarily used to start the plane's engine but also serve many different functions.

Since the modern airplane’s creation more than a century ago, it has become widely used all around the world. International travel, commerce, and trade all rely heavily on aeroplanes and airports. The way society runs has swiftly altered as a result of their existence. Therefore, it stands to reason that the aeroplane has been improved upon and developed by tens of thousands of engineers and scientists worldwide. A plane would just be a piece of metal without its battery, which is one of its most vital parts. A handful of the many fascinating facts about the aeroplane battery are included below. The aeroplane battery is fascinating.

Serve Multiple Functions

Aircraft batteries differ from car batteries in many ways. These batteries are primarily used to start the plane’s engine but also serve many different functions. Power from these batteries is used before the engine is turned on, which occurs during the boarding phase when the operators perform avionics testing. It’s also fully charged before any flight in case of fuel leaks or other critical power failures. If this occurs, the battery power will kick in, giving emergency energy to the plane, without which the pilots would not be able to control it.

Commonly Used Aircraft Batteries

There are different types of airplane batteries, all suited to different situations. However, some are more common than others. The two most common types are lead-acid batteries and nickel-cadmium batteries. Especially in private jets, small to medium-sized aircraft frequently utilise lead-acid batteries. They’re cheaper and easier to maintain and replace. Nickel-cadmium batteries are commonly found in commercial planes because they provide far more energy which is essential for a large plane. However, maintaining, charging, and replacing this battery is a complicated and expensive procedure that only an airline company would find worth doing.

Aviation Battery Temperature

Temperature regulation is integral to the function of airplane batteries. The chemical mixture inside is very temperature sensitive, and small fluctuations can cause it to be damaged, which is the last thing you want if the plane is already in the air. To prevent this, planes have complex temperature monitoring and regulating systems around the battery that keep it at its ideal operating temperature. To cool the battery, the most common method is liquid cooling. Cold water is applied to the battery’s surface using pipes, ensuring nothing is damaged. Nearby fans also help to dissipate the heat.

Increasing Use in Electrical Aircraft

Some steps are being made by businesses to lessen their dependency on fuel as they become more aware of climate change. The main technology that is being developed is the electrical plane or electric-hybrid plane. These planes rely on electricity for propulsion over fuel, and, as a result, their carbon footprint is massively reduced. These planes use the batteries they contain to help with propulsion, which is a job that batteries do not have in conventional aircraft. Since the power consumed from batteries is high in these kinds of planes, lithium-ion batteries are commonly used because they house even more energy than nickel-cadmium or lead-acid batteries.

Durable Battery Box

Airplane batteries are surrounded by a box that has a lot of applications. This box is vital for the safety of the plane and the passengers on board. It does sometimes have a fan attached for better ventilation, and its surface is great for dissipating heat built up by the battery. However, its main two functions are to protect the battery from damage and contain fires. In rare cases, batteries may catch fire, and if this ever happens, an uncontrolled spread could result in the engine exploding. However, the box contains fires and smothers them, preventing their spread. It is also so tough that it can likely survive any crash.


Millions of man-hours and close to billions of dollars have been spent on the advancement of the airplane battery. There are hundreds of modifications inside and in its design which help it to operate and control the biggest commercial transport vehicle in existence. It is a marvel of modern engineering and is advancing further every day. The more you know about these batteries, the better you’ll be able to understand them and how they function to support aircraft.

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