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EarthX ETX680-24-TSO Product Manual

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200407
ETX680-24-TSO Product
Manual
Copyright© 2024 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 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 ETX680-24-TSO

  • Page 1 Copyright© 2024 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 as intended and safe based on conditions anticipated or encountered during...

  • Page 2: Revision Log

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Revision Log Description Date Initial Release 10/10/2024 I C O N K E Y Valuable information Caution Warning...

  • Page 3: Table Of Contents

    E T X 6 8 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.
  • Page 5 (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 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y design aligns with the requirements for a FAA approved lithium battery as per RTCA performance specification DO-311A and DO-160.

  • Page 7: Protocol Definition

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Protocol Definition The following defines the protocol message sequence periodically transmitted at every 5 seconds: Byte Description SYNC 1...

  • Page 8: Installation Requirements

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Installation Requirements “This article meets the minimum requirements of technical standard order (TSO) C179b. Installation of this article requires separate approval.”...

  • Page 9: Discharge Curves

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Max Continuous Discharge Amps (Discharging 100% of capacity) Standard Charge Voltage 27.6 – 28.8 V Recommended Charger/Maintainer Amps 5 - 15A Rated Life (recommended replacement time)

  • Page 10: Discharge Versus Temperature

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Discharge Time Discharge Versus Temperature We use a similar Cold Cranking Amp test standard as the lead acid battery manufacturers (DO-311A IPP/IPR test performed at 0°F).

  • Page 11: Installation

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y The self-discharge rate is dependent on temperature. At high temperatures (>25°C), the cell internal resistance decreases so the self-discharge rate increases. See the graph below for self-discharge rates (in % per month) versus temperature.

  • Page 12: Battery Installation

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Battery Installation It is recommended you check the voltage before installing. If the voltage is below 26.4V, charge the battery before installing.

  • Page 13: Fault Monitoring Installation Options

    • 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 E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Fault Monitoring Connection to Garmin EFIS Configure the digital input (contact input) as “active low”, “user defined alert” type. Fault Connection to LED Connect the LED’s red wire (positive) to a spare or existing fuse or breaker off the electrical bus.

  • Page 15: Return To Service Checks (Tests)

    E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y The battery’s BMS can communicate to an EFIS like the G1000 over RS-232. The RS-232 link will report battery volts, battery temperature, battery State of Charge (SoC), and reports specific faults (see the communication specification below).
  • Page 16 E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Bit0: BMS Hardware The pilot should report to maintenance personnel. BMS electronics issue Problem Do not dispatch aircraft.

  • Page 17: 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 18: Do-160 Environmental Qualification Form

    There is no deviation to the test requirements. If test is marked N/R, it is not required due to the battery construction or battery energy category. DO-160 Environmental Qualification Form The following table is the DO-160 testing Environmental Qualification form. Nomenclature: Rechargeable Lithium Battery System Model: ETX680-24-TSO TSO Number: TSO-C179b Manufacturer: EarthX Revision & Change Number of DO-160: G, Dec8, 2010...
  • Page 19 E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y Humidity Equipment tested to Categories B Operational Shock and Crash Safety Equipment tested to Categories B Vibration Equipment tested to Category R, S, and U aircraft zone 1 and 2 for fixed wing turbojet...
  • Page 20 E T X 6 8 0 - 2 4 - T S O L I T H I U M B A T T E R Y -Fluid susceptibility test was conducted with the following fluids: piston engine fuel, synthetic hydraulic fluid, mineral based lubricating oil, isopropyl alcohol solvent, ethylene glycol, and insecticide.

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