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EarthX ETX1200-24-TSO Product Manual

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ETX1200-24-TSO
Product Manual
Copyright© 2025 EarthX, Inc. All rights reserved. The information contained in this document is the property of EarthX, Inc.
EarthX reserves the right to make changes to its documents or products without notice. It is the responsibility of each user to
ensure that all applications of EarthX's products are used as intended and safe based on conditions anticipated or encountered
during use. The EarthX logo is a trademark of EarthX, Inc

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Summary of Contents for EarthX ETX1200-24-TSO

  • Page 1 Copyright© 2025 EarthX, Inc. All rights reserved. The information contained in this document is the property of EarthX, Inc. EarthX reserves the right to make changes to its documents or products without notice. It is the responsibility of each user to ensure that all applications of EarthX’s products are used as intended and safe based on conditions anticipated or encountered...

  • Page 2: Revision Log

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Revision Log Description Date Created New 5/1/2025 I C O N K E Y ...

  • Page 3: Table Of Contents

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y T able of Contents Revision Log ..................i Overview ................... 1 Technology Inside ................1 Battery Cells ..................

  • Page 4: Overview

    B A T T E R Y Overview EarthX Lithium batteries are designed as a maintenance free replacement for the 24-volt lead-acid or lithium starter batteries. The Starting Battery (Function) is considered Primary in the electrical system for Part 23 Aircraft. The alternator charging system is considered secondary.

  • Page 5: Heater (Optional)

    (discharge current). Once the alternator is shutdown or fails and the voltage returns to < 30 volts, the BMS’s over-voltage protection automatically resets (allowing charge current). EarthX requires automatic over-voltage protection (crowbar or other means of shutoff) for alternator type charging systems.

  • Page 6: Physical Layer

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y The optional heater is automatically controlled based on battery use (discharge/charge), temperature and voltage. The below table shows the control logic. Discharge Amps Temperature DegC Voltage...

  • Page 7: Installation Requirements

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Bits Charge Status Unit less int8 Bits A. Bit 0=BMS Hardware Problem Bit1=Cell to Cell Charge Level Mismatch Bit2= High Temp Warning Bit3=Over-charged Protection Activated...

  • Page 8: Specifications

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y and the short term ground temperature shall not exceed 85°C. See the specification section for more information.

  • Page 9: Top View

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Back View Top View Discharge Curves The first graph below shows the state-of-charge versus voltage at a 1C discharge rate. Typically, lithium batteries require advanced methods like current counting to track the charge level.

  • Page 10: Discharge Versus Temperature

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y discharge cycle at 25°C. 26.8V is a good indication of full charge, while 25.5V is an indication of a discharged battery at 25°C.

  • Page 11: Self-Discharge Rates

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Cranking Amps vs Temp Lithium Lead Acid Temp Deg C Self-discharge Rates The self-discharge rate is dependent on temperature.

  • Page 12: Battery Installation Location

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Remove all metal objects from your person before handling the battery and use insulated tools for installation.

  • Page 13: Battery Vent Installation

    • Be careful not to crush or restrict flow through the tubing. • The minimum bend radius is 3”; tighter bends could cause the tubing to kink. • The vent tubing should be chemical resistant and rated for 500°F (i.e. EarthX typically supplies Teflon tubing).

  • Page 14: Fault Monitoring Installation

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y If required 90° elbows may be used to make small radius corners. Fittings must be brass, stainless, Teflon or other material with at least a 400 °F temperature rating (i.e.
  • Page 15 (see the communication specification below). Connect EFIS RS-232 receive to Pin B and ground to Pin C. Fault/Status Indicator (LED) Install Procedure (EarthX supplied LED) suitable location for the Fault/Status Indicator will be determined by the installer. One example is shown below, but aircraft will vary.

  • Page 16: Return To Service Checks (Tests)

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y 4. Secure the LED Placard (1” x 3”) to the trim panel in close proximity to the LED.

  • Page 17: Operating Instruction

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Operating Instruction While in flight the battery fault/status indicator should be monitored. The indicator can be monitored either by an LED or input to an EFIS where approved.
  • Page 18 E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y extremely cold removed. temperatures Bit5=Excessive More than 15 The battery’s discharge current is shutoff and will Cranking seconds of engine automatically turn on when battery cools down...

  • Page 19: Maintenance

    Inspection and testing is required annually. For more details, see the ICA. Warranty EarthX, Inc. (Manufacturer) warrants its lithium batteries (hereafter referred to as Battery or Batteries) to be free of defects in material and workmanship for a period of two years. A dealer is not authorized to issue a replacement battery without prior authorization from EarthX, Inc.
  • Page 20 E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y returns, customer will pay the shipping expenses. Batteries replaced under the warranty provisions will carry only the remainder of the original applicable Warranty period.

  • Page 21: Appendix I Do-311A And Do-160 Testing

    E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Appendix I DO-311a and DO-160 Testing DO-311A Test Summary Test Description Section Reportable Information Physical Examination 2.4.4.1...

  • Page 22: Do-160 Environmental Qualification Form

    L I T H I U M B A T T E R Y DO-160 Environmental Qualification Form Nomenclature: Rechargeable Lithium Battery System Model: ETX1200-24-TSO Manufacturer: EarthX Revision & Change Number of DO-160: G, Dec8, 2010 Date Tested: Aug 1, 2024...
  • Page 23 E T X 1 2 0 0 - 2 4 - T S O L I T H I U M B A T T E R Y Induced Signal Susceptibility Equipment tested to Categories B(CX) Radio Frequency Susceptibility Equipment tested for conducted susceptibility to Categories R and for radiated susceptibility to Category G (100MHz –...

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