New Line of Sodium-Ion Aircraft Batteries Introduced

Aerolithium has introduced its AeroSodium line of aircraft engine batteries.

The batteries utilize sodium-ion technology, which offers different performance characteristics compared to traditional lead-acid (often referred to as AGM or “absorbed glass mat”) and lithium-ion batteries, according to officials with the Tallahassee, Florida-based company.

The new product line follows 12 months of testing and is currently available for pre-order, company officials added.

Company officials noted that key features identified during testing include:

• Temperature Range: Sodium batteries maintain better engine-cranking capability at temperatures below 32°F and operate across a wider voltage range than standard lithium alternatives.
• Discharge Tolerance: Sodium cells can tolerate deep discharge to near zero volts without permanent damage to the cells.
• Stability: Lab testing confirms that sodium-ion is inherently stable and non-flammable and has better thermal runaway resistance.
• System Requirements: Unlike lithium-ion batteries, sodium batteries do not require a complex Battery Management System (BMS) for safe operation because sodium’s lower and upper (dis)charging limits exceed a BMS’s capabilities. The state of charge is determined directly by voltage, similar to lead-acid batteries.
• Weight and Materials: Sodium batteries are lighter than lead-acid and comparable in weight to lithium.

Aircraft Compatibility and Pricing

The AeroSodium line is primarily intended for use in experimental aircraft. While not currently standard for certified aircraft, installation may be possible via a 337 field approval process, company officials noted.

Prices for the batteries range from $175 to $2,500 depending on the specific model. A Bluetooth battery monitor is also available as an optional feature.

Each battery is individually hand-crafted. Pre-orders are being accepted through Aerolithium’s initial distributor, Azalea Aviation (AzaleaAviation.com) or directly through the manufacturer, Aerolithium.

For more information: Aerolithium.com