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EarthX ETX680-24-TSO Manual

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200408
ETX680-24-TSO Manual
Instructions for
with
Continued Airworthiness
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 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© 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 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 Approved By: Created New 9/16/2023 Nicoson Revised per FAA comments (ref. 3/6/2024 Nicoson 773-24-00018), and subsequent...

  • 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 Table of Contents Revision Log ..................1 Table of Contents ................... 2 Airworthiness Limitations ................ 3 Introduction ....................

  • Page 4: Airworthiness Limitations

    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 Airworthiness Limitations The Airworthiness Limitations section is FAA approved and specifies maintenance required under Secs. 43.16 and 91.403 of Title 14 of the Code of Federal Regulations unless an alternative program has been FAA approved.

  • Page 5: Introduction

    This manual covers the installation, inspection, maintenance (charging) and replacement aspects for the ETX680-24-TSO battery installed on 14 CFR Part 23 aircraft. The installation of the rechargeable lithium battery defined herein meets the guidance of AC 20-184. In accordance with Federal Aviation Administration (FAA) Advisory Circular (AC) 23.1309-1E and FAA Technical Standard Order (TSO) TSO-...

  • Page 6: Ica Revisions

    Description EarthX Lithium batteries are a maintenance free replacement for the 24-volt lead-acid or lithium batteries. The battery operation is automatic (no operator control). The battery is part of the main aircraft electrical system with the alternator being the primary power source and the battery being the secondary power source;...

  • Page 7: Dimensions

    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 Dimensions Figure 1 Battery Dimensions - Back View Figure 2 Battery Dimensions - Top View 200408 (Revision D)

  • Page 8: Initial Installation

    Figure 3 Fault/Status Monitoring Output Initial Installation The initial installation of the EarthX battery requires the installation of battery vent tubing, and a Fault/Status LED in addition to the battery. See the Appendix for the aircraft specific initial installation process.

  • Page 9: Battery Re-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 7. Remove the battery by lifting out of the battery tray. Battery Re-installation It is recommended you check the voltage before installing.
  • Page 10 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 Figure 4 Firewall Forward Battery Vent Installation Example 4. If replacing the tube that exits the belly of the aircraft, leave at least 1” exposed on the outside of the aircraft and secure in place with RTV silicon.

  • Page 11: Fault/Status Indicator Led Bulb Or Fuse Replacement

    (¼ x 1 ¼”, 1-amp, fast blow fuse). Fault/Status Indicator Replacement The installation or replacement of the EarthX Fault/Status LED Indicator (part# 11MM24) is detailed below. Figure 4 Fault / Status Indicator 1. Power OFF the aircraft to remove power.

  • Page 12: Inspection

    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 1. Verify the vent tube protruding from the aircraft can NOT be pushed up and into the interior of the aircraft with the force of an index finger.

  • Page 13: Aircraft Charging System Inspection Instructions

    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 then it must be replaced. Alternately, if the batteries tested capacity is capable of supporting the aircraft’s emergency load for the required amount of time it is considered fit for continued service.

  • Page 14: Configuration Control

    L I T H I U M B A T T E R Y At battery end-of-life contact EarthX. The only approved replacement lithium battery is an EarthX battery of the same model number. The model number is displayed on the top label of the battery.

  • Page 15: Troubleshooting

    (step 2) plug the charger power cord into AC outlet. The charger should startup and go into the “Save” charging mode. If not contact EarthX technical support. If using a Ground Power Unit (GPU), the current rating or current setting SHALL NOT be more than the max charge rate stated on the battery label or in this manual.

  • Page 16: Battery Storage And Handling

    For recycling information and where to recycle check this website ( https://www.call2recycle.org/ Do not incinerate or expose to open flames! The Safety Data Sheet (SDS) is available on EarthX’s website. 200408 (Revision D)

  • Page 17: Weight And Balance

    Always follow the manufacturers’ recommended safety precautions and procedures. Weight and Balance The installation of the ETX680-24-TSO battery is considered a permanent installation. The basic aircraft weight and balance should be updated inclusive of the added equipment when the installation is completed and documented on the aircraft Weight and Balance Record (WBR).

  • Page 18: Appendix I: Fault/Status Led Initial Installation Common To All Aircraft

    B A T T E R Y Appendix i: Fault/Status LED Initial Installation Common to all Aircraft The installation of the EarthX Fault/Status LED Indicator (part# 11MM24) is detailed below. The LED is yellow or amber in color. Fault / Status Indicator Fault/Status Indicator (LED) Install Procedure suitable location for the Fault/Status Indicator will be determined by the installer.
  • 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 5. Route the black wire from the LED to the battery box through the main wire bundle, secure in place with zip ties.

  • Page 20: Appendix A: Cessna 172 Models Installation Specific Information

    90 Degree 3/8” SS Elbows Battery (early N model, serial # 17269310-17272885) 1. Place the ETX680-24-TSO battery into the battery box with the Foam Insert (230908). 2. Modify the existing battery box cover; cut three 1 ½” holes in the cover for the battery vent and terminals shown below.
  • Page 21 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 Cover Modification 200408 (Revision D)
  • Page 22 Battery Mounting Battery (N model serial #17272886 and later, and P,Q,R and S models) 1. Place the EarthX battery into the battery tray. Place the new battery hold down bracket (ETX680-24-HDB) into the battery and battery tray side wall, shown below.
  • Page 23 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 Mounting (late model N and newer) Vent Tube Installation Follow these steps to install the battery vent, as well as the installation practices of AC 43.13-1B, paragraphs 11-19 and 11-22.
  • Page 24 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 Vent Installation 2. The new vent tubing is routed inside the original battery drain tubing (and drain tube clamps), so no new clamps are required.

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