EarthX ETX900-TSO Lithium Aircraft Battery – 12 Volt

$699.00

Falcon Field Delivery/Pickup/SHIP

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The EarthX ETX900-TSO is a lightweight 12V (13.2-volt nominal) lithium iron phosphate (LiFePO₄) aircraft battery designed for certified general aviation aircraft. Weighing just 5.4 lb, the ETX900-TSO delivers strong starting performance while offering substantial weight savings compared with traditional lead-acid aircraft batteries.

The ETX900-TSO incorporates EarthX’s integrated Battery Management System (BMS), which provides protection against over-discharge, over-charge, short circuit, and temperature conditions while also balancing the individual cells. The battery also includes redundant electronic protection circuits, a battery fault/status output, and an integrated thermal runaway containment and venting system specifically designed for aircraft installations.

Certified to FAA TSO-C179b, the ETX900-TSO meets applicable DO-311A and DO-160 lithium aircraft battery testing requirements. It is designed for either engine-compartment or cabin installation and may be used with aircraft charging systems having an alternator output of 80 amps or less, subject to the applicable installation approval and aircraft limitations.

For installation in a certified aircraft, TSO approval alone is not installation approval. An applicable STC or other approved installation basis is required. EarthX offers aircraft-specific STC installation kits, which are normally required for the initial conversion to the ETX900-TSO; subsequent battery replacements generally require only the battery itself when the approved installation is already present.

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Features:

  • FAA TSO-C179b approved lithium aircraft battery
  • Lithium iron phosphate (LiFePO₄) chemistry
  • Extremely lightweight — only 5.4 lb
  • 800A peak cranking power
  • 390A cold cranking performance at -18°C
  • Integrated Battery Management System (BMS)
  • Over-charge and over-discharge protection
  • Short-circuit and temperature protection
  • Automatic cell balancing
  • Redundant electronic protection circuitry
  • Battery fault/status indication capability
  • Integrated thermal runaway containment and venting system
  • IP66 environmental rating
  • Designed for engine-compartment or cabin installation
  • Low self-discharge rate of less than 3% per month at 25°C
  • Recommended replacement interval of 6 years

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Specifications:

  • Nominal Voltage: 13.2V
  • Capacity: 15.6 Ah at 1C rate
  • Peak Cranking Amps: 800A
  • Rated Power: 600A at 23°C / 365A at -18°C
  • Cold Cranking Amps: 390A
  • Maximum Continuous Discharge: 31A
  • Standard Charge Voltage: 13.9–14.6V
  • Recommended Charger/Maintainer: 0.8–20A
  • Maximum Aircraft Charging Current: 80A
  • Weight: 5.4 lb (2.4 kg)
  • Dimensions: 6.5″ L × 3.0″ W × 6.6″ H
  • Chemistry: LiFePO₄
  • Case Size: E
  • Terminal Hardware: M6
  • Environmental Rating: IP66
  • Maximum Altitude: 25,000 ft
  • Shelf Life: Approximately 1 year without charging
  • FAA Approval: TSO-C179b

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Installation Note: The ETX900-TSO requires an approved installation for use in certified aircraft. Applicable EarthX STC installation kits are aircraft-specific, and the aircraft charging system must have automatic over-voltage protection. Always verify aircraft model, serial number, installed electrical system, and current EarthX AML/STC eligibility before ordering or installation.

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