Why Use Lithium-ion Batteries in Aviation?

Lithium-ion batteries are now widely used in aviation for various applications, including engine start and emergency power. Their lightweight design and high energy density make them a top choice in an industry where efficiency and dependability are essential. But what makes lithium batteries so important for modern aircraft? In this article, we’ll explore the benefits and key considerations of using lithium-ion batteries in aircraft.

Lithium-ion batteries work by moving lithium ions between electrodes during charging and discharging. Compared to traditional lead-acid or nickel-based batteries, they provide much more energy for their weight. In fact, lithium-ion batteries provide three times the energy density per kilogram compared to lead-acid batteries. This allows for more energy and more power, while reducing battery weight.

Energy equals an amount of power over a period of time. Extra energy can be extremely beneficial in emergency situations. Having additional energy means you could have extra time to power your radio or run another piece of critical equipment during an emergency to help you land safely in the event of primary power loss.

True Blue Power lithium-ion batteries deliver more power per pound than any other aircraft battery. More power means cooler, faster engine starts. This results in less wear and tear on your engine and reduces the risk of a hot start.

Lithium-ion batteries can cut aircraft battery weight by more than 60%. Less weight translates into immediate advantages, such as increased design flexibility for aircraft manufacturers, and the ability for operators to carry more passengers, cargo, or fuel.

Lithium-ion batteries last up to four times longer than lead-acid or NiCad options, reducing the frequency and cost of end-of-life battery replacements.

Unlike lead-acid batteries that lose efficiency as they discharge, lithium-ion batteries maintain stable power throughout their use. You’ll notice a higher, sustained voltage on lithium-ion batteries as well as reduced voltage drop during engine start and other operations.

Lithium-ion batteries require less maintenance compared to lead-acid and NiCad batteries, which need regular attention to prevent issues like sulfation or "memory effect." This makes lithium-ion batteries more reliable and cost-effective.

Although the initial cost of lithium-ion batteries is higher, their long-term benefits far outweigh the initial investment.

With their longer lifespan and minimal maintenance needs, lithium-ion batteries drastically reduce the cost of replacements and downtime, which is especially beneficial for larger aircraft fleets.

By reducing aircraft weight, lithium-ion batteries contribute directly to fuel savings, one of the largest operational costs for passenger and cargo transportation operations.

When selecting a lithium-ion battery for aviation use, consider these key factors:

Ensure the battery is certified by aviation authorities like the FAA or EASA. Certified batteries undergo rigorous testing to meet the safety and performance standards required for flight.

The capacity of a battery, measured in watt-hours (Wh), determines how long it can power essential systems. Choose a battery that balances capacity and weight to optimize performance.

Select a battery that meets your aircraft’s weight restrictions, ensuring you don’t sacrifice payload or fuel efficiency.

Choosing a trusted battery manufacturer is key when considering safety and performance. Look for certified aircraft batteries from companies with a reputable history in aviation.

True Blue Power leads the industry as the first to develop and achieve FAA TSO certification for lithium-ion main ship batteries in aviation. We’re dedicated to helping you start lighter, faster, and smarter with the lightest, most powerful, and most reliable certified batteries available. With over 11 million flight hours and zero in-flight failures, no other aerospace company has more experience in the design and certification of lithium technology for aviation.

For more information about lithium batteries for your aircraft, contact us.