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

Part Number: ETX900-TSO-35-PA-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 Tube Fitting (3/8")
Grommet (3/8")
90 Degree SS Elbows (1/4")
90 Degree SS Elbows (3/8")
Spring Clamp

STC Paperwork included with installation kit!


Used for replacing 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 Comment Eligibility Chart
Piper PA-18 PA-18 18-1 18-7632 With 35Ah battery box. 7853
Piper PA-18 PA-18A 18-1 18-7632 With 35Ah battery box. 7853
Piper PA-18 PA-18S 18-1 18-7632 With 35Ah battery box. 7853
Piper PA-20 PA-20 20-1 20-99999 With 35Ah battery box. 7853
Piper PA-20 PA-20S 20-1 20-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22 22-1 22-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22-108 22-8000 22-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22-135 22-534 22-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22-150 22-2378 22-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22-160 22-2378 22-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22S-150 22-2378 22-99999 With 35Ah battery box. 7853
Piper PA-22 PA-22S-160 22-2378 22-99999 With 35Ah battery box. 7853
Piper PA-24 PA-24 24-1 24-3687 With 35Ah battery box. 7853
Piper PA-24 PA-24-250 24-1 24-3687 With 35Ah battery box. 7853
Piper PA-24 PA-24-260 24-3642 24-5034 With 35Ah battery box. 7853
Piper PA-24 PA-24-400 26-1 26-148 With 35Ah battery box. 7853
Piper PA-28 PA-28-140 28-20001 28-7725290 7853
Piper PA-28 PA-28-150 28-1 28-4377 7853
Piper PA-28 PA-28-151 28-7415001 28-7715314 7853
Piper PA-28 PA-28-160 28-1 28-4377 7853
Piper PA-28 PA-28-161 2816001 2816119 7853
Piper PA-28 PA-28-161 2841001 2841365 7853
Piper PA-28 PA-28-161 2842001 2842999 7853
Piper PA-28 PA-28-161 28-7716001 28-8616057 7853
Piper PA-28 PA-28-180 28-671 28-7505260 7853
Piper PA-28 PA-28-181 2843001 2843999 7853
Piper PA-28 PA-28-181 28-7690001 28-8690062 7853
Piper PA-28 PA-28-181 2890001 2890231 7853
Piper PA-28 PA-28-201T 28-7921001 28-7921095 7853
Piper PA-28 PA-28-235 28-10001 28-7710089 7853
Piper PA-28 PA-28-236 2811001 2811050 7853
Piper PA-28 PA-28-236 2845001 2845999 7853
Piper PA-28 PA-28-236 28-7911001 28-8611008 7853
Piper PA-28 PA-28R-180 28R-30002 28R-7130013 7853
Piper PA-28 PA-28R-200 28R-35001 28R-7635545 7853
Piper PA-28 PA-28R-201 2837001 2837061 7853
Piper PA-28 PA-28R-201 2844001 2844999 7853
Piper PA-28 PA-28R-201 28R-7737002 28R-7837317 7853
Piper PA-28 PA-28R-201T 2803001 2803012 7853
Piper PA-28 PA-28R-201T 28R-7703001 28R-7803373 7853
Piper PA-28 PA-28RT-201 28R-7918001 28R-8218026 7853
Piper PA-28 PA-28RT-201T 28R-7931001 28R-8631005 7853
Piper PA-28 PA-28RT-201T 2831001 2831038 7853
Piper PA-28 PA-28S-160 28-1 28-1760 7853
Piper PA-28 PA-28S-180 28-671 28-7205234 7853
Piper PA-32 PA-32-260 32-1 32-7800008 7853
Piper PA-32 PA-32-300 32-40000 32-7940290 7853
Piper PA-32 PA-32-301 32-8006002 32-8606023 7853
Piper PA-32 PA-32-301FT 3232001 3232999 7853
Piper PA-32 PA-32-301T 32-8024001 32-8424002 7853
Piper PA-32 PA-32-301XTC 3255001 3255999 7853
Piper PA-32 PA-32R-300 32R-7680001 32R-7880068 7853
Piper PA-32 PA-32R-301 3213001 3213103 7853
Piper PA-32 PA-32R-301 3246001 3246999 7853
Piper PA-32 PA-32R-301 32R-8013001 32R-8613006 7853
Piper PA-32 PA-32R-301T 3229001 3229003 7853
Piper PA-32 PA-32R-301T 3257001 3257999 7853
Piper PA-32 PA-32R-301T 32R-8029001 32R-8629008 7853
Piper PA-32 PA-32RT-300 32R-7885002 32R-7985106 7853
Piper PA-32 PA-32RT-300T 32R-7787001 32R-7987126 7853
Piper PA-32 PA-32S-300 32S-15 32S-7240137 7853

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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Please verify product details for suitability for your application.

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