EARTHX CERTIFIED BATTERIES
O’Day Design is proud to offer FAA TSO-approved EarthX batteries, engineered specifically for certified aircraft. These batteries allow you to gain useful load, often over 20lb, while increasing starting power and battery life. Every battery meets stringent standards, ensuring safety, reliability, and regulatory compliance for your aircraft.
Use Our Product Selector To Find Your Certified Battery!
With over 350 STC-approved aircraft models, EarthX batteries are pre-approved for installation on a wide range of certified aircraft, including Cessna, Piper, Beechcraft, and more. For most certified aircraft, installing an EarthX battery requires the use of an EarthX Supplemental Type Certificate (STC) along with the appropriate installation kit. STC authorization is provided at no cost, making the upgrade straightforward and fully compliant.
At O’Day Design, we make the process easy. Simply enter your aircraft make and model in the selector above and choose the option that fits your needs:
- Battery Only – For aircraft that already have the STC applied
- STC Kit – Only the STC Kit (No Battery)
- Battery + STC Kit – The most common choice for first-time installations
Once selected, our tool takes you directly to the correct product page where you can review:
- Aircraft Eligibility
- Battery Specifications
- STC Documentation
- Installation Instructions
This ensures you get the correct battery and STC kit for your exact aircraft, with no guesswork.
The EarthX Certified lineup includes four FAA TSO-certified batteries, fully compliant with TSO-C179b standards
EarthX Batteries are made using the latest technology lithium iron phosphate (LiFePO₄) chemistry. While no energy storage system is completely risk-free, LiFePO₄ chemistry is widely recognized as one of the most stable and predictable lithium battery chemistries available today. These batteries have been extensively tested, and approved by the FAA to be safe in aircraft.
The ETX battery series is fully protected by an integrated battery management system (BMS) that protects the cell’s from over discharge, over charge, short circuit, temperature, plus cell balancing to ensure charge levels are equal. Additionally, the ETX Hundred series aircraft batteries have redundant electronic circuits and battery fault indication. This fault indication that can be programed into your EFIS or wired to an LED on your panel. The fault indicator alerts you to the state of charge and state of health of the battery.