True Blue Power Awarded FAA’s Highest Level of Lithium Battery Approval, Receives Sweeping Certification of Three Main Ship Batteries


WICHITA, Kan. (October 10, 2019) — True Blue Power, a leading manufacturer of lithium-ion aircraft batteries, today announced the TSO certification of the company’s entire Gen5 main ship battery family. The TB20 (20 amp-hour), TB30 (30 amp-hour) and TB40 (40 amp-hour)received an impressive C179b CLASS A-4B rating, meeting the Federal Aviation Administration’s (FAA) latest and highest level of lithium battery requirements.

“We commend the FAA on continuously evaluating and improving the standards by which lithium products are determined safe,” said Brett Williams, True Blue Power Director of Engineering. “The latest certification requirements were significant and challenging, but equally important,” Williams continued. “The certification of all three Gen5 batteries at the same time, to such rigorous requirements, is uncommon and a great accomplishment.”

True Blue Power® Gen5 Battery CLASS A-4B Rating:

Battery Thermal Runaway Containment    Level A           Highest

Maximum Energy Category                      Level 4           Highest

Emissions Control             Level B          Completely contained within vent design

True Blue Power®Gen5 Battery DO-311A and DO-160 Testing Included (but was not limited to):

  • Battery Thermal Runaway Containment
  • Constant Voltage Discharge
  • Drop Impact Resistance
  • Explosion Containment
  • Over Discharge With/Without Protection
  • Overcharge Protection
  • Rated Capacity at Low/High Temperature
  • Rapid Discharge at High Temperature
  • Short Circuit With/Without Protection
  • Single Cell Thermal Runaway Containment

Maintenance-free / On-condition and Ultra-lightweight Advantages:

Engineered to address the many challenges lead-acid and Nickel Cadmium (NiCad) technologies present, the True Blue Power Gen5 family eliminates expensive battery maintenance, frequent capacity checks, low-voltage operational delays and most battery-related AOG situations. The TB20/30/40’s software-based Battery Management System (BMS) is certified to RTCA DO-178C, Design Assurance Level A. The sophisticated BMS provides constant monitoring, protection and real-time capacity data, enabling on-condition maintenance.

The ultra-lightweight lithium-ion Gen5 batteries weigh up to 60% less and deliver more amp hours per pound than any other aircraft battery. This translates into more power for engine starts, more energy for emergency and back-up power, ultra-fast recharge and much longer life. Additional benefits include:

  • Real-time monitoring
    • Communicates real-time state-of-charge (SOC) and state-of-health (SOH) data
  • Built-in Test (BIT) Indicator
    • Provides SOC data without the need for external test equipment, load banks or auxiliary power
  • Battery configurations programmed for each specific aircraft
    • Charge current limit, end-of-life capacity, minimum dispatch capacity and engine-start readiness
  • Environmentally friendly
    • Significantly reduces carbon emissions, eliminates toxic metals and acid spills, and can be recycled or disposed of in area landfills

The newly-certified True Blue Power Gen5 lithium-ion battery family will be on display throughout the National Business Aviation Association Convention and Exhibition (NBAA) in booth C8717, October 22 – 24 at the Las Vegas Convention Center in Las Vegas, Nevada. For more information, contact Erik Ritzman, True Blue Power Director, at 316-630-0101 or visit

About True Blue Power

True Blue Power specializes in the custom design and manufacture of power solutions for the global aerospace industry. This includes USB charging ports, inverters, voltage converters, emergency power supplies and advanced lithium-ion batteries. Select products feature proprietary NanoPhosphate® lithium-ion battery technology, which offers stable chemistry, faster charging, consistent output, excellent cycle life and superior cost performance — this translates into smaller, lighter products that are less than half the size and weight of existing solutions. For additional information, please visit