McFarlane Aviation Products - ETX900-TSO-35-KIT BUNDLE

Part Number: ETX900-TSO-35-KIT BUNDLE


Eligibility Notice

Please verify that this product is eligible for your aircraft before adding it to your cart.

Click here to view product eligibility.

Product Details

FAA-TSO EarthX Batteries


Note - No hazmat fee charge, unless quantity results in shipment exceeding 300 Watt hrs. Fee for international shipments may apply.


ETX900-TSO Battery
Panel Mount LED
Battery Box Spacer
Fault Light Indicator Placard
Tubing (3/8")
Tubing (1/4")
Wye Tubing Fitting (3/8")
Grommet (3/8")

STC Paperwork included with installation kit!


Use for replacing a Concorde or Gill 35Ah Battery. 


The FAA approved 12V ETX900-TSO designed for certified aircraft. An STC or DER assisted Part 337 (field approval) is required for installation.

This aircraft battery has electronic protections (BMS) and built in thermal runaway containment and venting ability built in. The ETX900-TSO meets all of the DO-311a and DO-160 requirements for a lithium battery in aircraft.

Our 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, our ETX Hundred series aircraft batteries have redundant electronic circuits and battery fault indication. This battery also has 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. (Please see manual for details)




“The conditions and test required for TSO approval of this article are minimum performance standards. Those installing this article either on or within a specific type or class of aircraft must determine that the article installation conditions are within the TSO standards. The article may be installed only according to 14 CFR part 43 or the applicable airworthiness requirements.”


EarthX Batteries use Lithium Iron Phosphate chemistry to deliver powerful starting energy. This chemistry provides the highest, most robust performance and safest power on the market. All EarthX Batteries come standard with a BMS (battery management system) for performance, safety, and longevity.



  • Weight reduction, 80% lighter than lead-acid equivalent
  • Speedy charging
  • Use your existing battery box
  • Long-lasting utility
  • Flexible mounting
  • Environmentally friendly interior
  • Lithium iron phosphate, most abuse tolerant chemistry
  • Fire retardant foam insert included with installation kit


**View Eligible Aircraft tab to verify applicability for your aircraft. 


Battery Only
Battery + Installation Kit + STC
Aviat A-1 Series
Cessna 120, 140, 150-150C
Cessna P172D
Cessna 175-175C
Cessna 177A,B,RG
Cessna 180-180K
Cessna 182A-182Q
Cessna 185-A185F
Mooney M20E-M20K
Piper PA12, PA32
Piper PA28-PA28RT
Piper PA18, PA20, PA22, PA24 w/35Ah Battery Box
Piper PA18, PA20, PA22, PA24 w/25Ah Battery Box

**Note: EarthX Batteries and installation kits containing a battery are Hazmat Code 9. See EarthX SDS for additional information. 


Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Eligibility Chart
Cessna 177 177 17700001 17701164 7853
Cessna 177 177A 17701165 17701370 7853
Cessna 177 177B 17701371 17702752 7853
Cessna 177 177RG 177RG0001 177RG1366 7853
Cessna 180 180 30000 32661 7853
Cessna 180 180A 32662 50355 7853
Cessna 180 180B 50356 50661 7853
Cessna 180 180C 50662 50911 7853
Cessna 180 180D 18050912 18051063 7853
Cessna 180 180E 18051064 18051183 7853
Cessna 180 180F 18051184 18051312 7853
Cessna 180 180G 18051313 18051445 7853
Cessna 180 180H 18051446 18052284 7853
Cessna 180 180J 18052285 18052384 7853
Cessna 180 180J 18052385 18052770 7853
Cessna 180 180K 18052771 18053203 7853
Cessna 182 182 33000 33842 7853
Cessna 182 182A 33843 51556 7853
Cessna 182 182B 51557 52358 7853
Cessna 182 182C 52359 53007 7853
Cessna 182 182D 18253008 18253598 7853
Cessna 182 182E 18253599 18254423 7853
Cessna 182 182F 18254424 18255058 7853
Cessna 182 182G 18255059 18255844 7853
Cessna 182 182H 18255846 18256684 7853
Cessna 182 182J 18256685 18257625 7853
Cessna 182 182K 18257626 18258505 7853
Cessna 182 182L 18258506 18259305 7853
Cessna 182 182M 18259306 18260055 7853
Cessna 182 182N 18260056 18260825 7853
Cessna 182 182P 18260826 18262465 7853
Cessna 182 182P 18262466 18265175 7853
Cessna 182 182Q 18265176 18267715 7853
Cessna 185 185 185-0001 185-0237 7853
Cessna 185 185A 185-0238 185-0512 7853
Cessna 185 185B 185-0513 185-0653 7853
Cessna 185 185C 185-0654 185-0776 7853
Cessna 185 185D 185-0777 185-0967 7853
Cessna 185 185E 185-0968 185-1149 7853
Cessna 185 A185E 18501600 18502090 7853
Cessna 185 A185E 185-0968 185-1599 7853
Cessna 185 A185F 18502091 18502310 7853
Cessna 185 A185F 18502311 18504448 7853

Related Documents

Supplemental Type Certificates

EarthX STC for SA01005DE

Safety Data Sheets (SDS)

EarthX SDS

Maintenance and Product Guides

EarthX LED Indicator Quick Reference
EarthX Maintenance Manual ETX900-TSO
EarthX Production Spec ETX900-TSO
EarthX Top Assembly ETX900-TSO

Eligibility Charts

Eligibility for EarthX

Frequently Asked Questions

My battery is dead or near zero volts, how do I recharge it?
How do I know when it is time to replace my (LFP) lithium battery?
My LED light is flashing on my ETX680C/680, ETX900, or ETX1200, what does that mean?
I just installed my EarthX battery in my aircraft and started the engine and my charging amps was really high, is this normal?
What is the shelf life or life span of a battery?
What is the difference between PCA and CCA?
Can I hook an EarthX battery in parallel or series with a lead acid battery?
What maintenance is required?
The battery does not seem to charge or hold a charge, why?
Can the battery be installed in any position?
How do I know if my battery charger is working?
Is it safe to hook up the battery to a charger and walk away?
How often should I charge the battery?
Are lithium batteries safe?
How long should I wait in between failed start attempts?
How much do I tighten the screws for installation?
How long will my battery last?
Why does my battery look puffy or swollen?
Will my aircraft lithium battery catch fire?

Related Videos

How to Charge Your EarthX Lithium Battery

Do EarthX Lithium Batteries Explode?

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