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| Model | Volts | 1 Hr 1C Rate | Crank Amps (PCA/CCA) |
Weight | Case Size L x W X H (In.) |
PN | Price | Buy |
|---|---|---|---|---|---|---|---|---|
| ETX680 | 13.2 | 12.4 | 680/320 | 4.1 lb | 6.5 x 3.1 x 6.6 | 11-13907 | $379.00 | |
| ETX680C | 13.2 | 12.4 | 680/320 | 3.9 lb | 5.9 x 3.4 x 4.5 | 11-14292 | $379.00 | |
| ETX900 | 13.2 | 16 | 840/400 | 4.9 lb | 6.5 x 3.1 x 6.6 | 11-13926 | $449.00 | |
| ETX900-24 | 26.4 | 15.6 | 840/400 | 8.9 lb | 6.5 x 5.1 x 6.6 | 11-16601 | $899.00 | |
| ETX900-VNT | 13.2 | 16 | 840/400 | 5.4 lb | 6.5 x 3.1 x 6.6 | 11-16211 | $607.00 | |
| ETX1200 | 13.2 | 24.8 | 1200/600 | 6.9 lb | 6.5 x 3.1 x 6.6 | 11-13930 | $799.00 |
Overview
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Note: Not FAA Approved. Intended for use in experimental aircraft only. When quality, performance, and safety matter, EarthX is the most trusted and used brand by experimental aircraft manufacturers and experimental aircraft owners, and endorsed by engine companies such as Rotax, Continental, ULS Power and Viking. Remove weight and increase power, all with one product! These ETX Hundred series (ETX680C, ETX680, ETX900 and the ETX1200) batteries are recommended for your primary engine aircraft battery. These models are equipped with redundant electronic circuits on the BMS board and have an LED battery fault light indicator to alert you to cell health and state of charge. The battery management features include over discharge protection, over charge protection, short circuit protection up 1000 amps, excessive cranking protection (temperature sensing) in addition to integrated cell balancing technology. With an EarthX lithium battery, you will gain a significant amount of cranking amps and drop a minimum of 11+ pounds instantly by switching from a lead acid battery. Please view the Aircraft Application Flowchart under the documents tab for assistance in selecting the correct EarthX battery for your application. Additional Specs
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Features
- The ETX Hundred series is fully protected by an integrated Battery Management System that protects the cell’s from over discharge, over charge, short circuit, thermal protection and built in cell balancing to ensure charge levels are equal (balanced) 100% of the time for optimal performance
- and life.
- The most trusted and used lithium battery on the market. Multiple experimental aircraft manufacturers and experimental engine manufacturers such as Rotax Engines, Continental Motors, UL Power Engines and Viking Engines approve the EarthX brand.
- LiFePO4 chemistry, the most abuse tolerant of all lithium battery chemistries.
- Higher voltage while cranking mean faster starts.
- Extremely light weight, 70-80% lighter than your lead acid battery.
- 4,000 charge cycle life versus 350 charge cycle life of a lead acid battery. Can last up to 8 years.
- Environmentally friendly, no hazardous lead or acid, will not corrode or sulfate.
- Wider operational temperature range than a lead acid battery. (-22° F to 140° F, -30 ° C to 60° C) . A lead acid’s operational range is(-40° F to 113° F or -40° C to 45° C).
- Vibration tested to DD-311 FAA standard.
- Low self discharge rate and fast charging.
Why Choose EarthX
- You will instantly remove 11+ pounds compared to the lead acid battery in your experimental aircraft! Now that is a huge weight savings.
- Significant increase in cranking power. If you have been using the PC680, you will increase your CCA’s from 170 to 320 and the PCA’s from 520 to 680! Now that’s power to crank your engine!
- Now you can easily have a backup battery and not worry about the additional weight. In fact, if you switch from a lead acid battery and add a backup battery, so you have a primary and a backup, you still have decreased your overall weight by 50%! Note that only the ETX680C/680/900/1200 have the aircraft specific BMS.
- Innovative and sophisticated BMS designed and engineered with redundancy for safety, reliability, and performance. These are EXCLUSIVE features!
Videos
Reviews
Great service. Battery shipped out of warehouse first day and arrived next day.
Verified Purchase
EARTHX EXT680C LITHIUM AIRCRAFT BATTERY
Very lightweight battery. Cranks my IO 540 easily.
Verified Purchase
EARTHX ETX900 AIRCRAFT LITHIUM BATTERY
5
Verified Purchase
ETX680 LITHIUM AIRCRAFT BATTERY
At least 50% more RPM on starting I can sure you the BMS system saved the battery as I mistakenly left my master switch on for a day and after recharging the battery all is well
Verified Purchase
ETX680 LITHIUM AIRCRAFT BATTERY
Wild power, low weight. Nothing we have used compares
Verified Purchase
EARTHX ETX900 AIRCRAFT LITHIUM BATTERY
Very light well constructed , comes with terminal bolts.
Wow
Replaced two Odyssey PC680 batteries that were unable to turn over my new engine in parallel. The EarthX Batteries didnt just turn it over, they spun the prop and it started on the second try. Saved 26 lbs in the process. Very happy with them.
Very light battery. I pulled out an Odyssey PC 925 and put in a EarthX ETX680C battery. Weight savings about 22 pounds. It came with easy instructions to run a LED warning light to the dash. It also included some small foam pieces for mounting. The biggest surprise was starting the motor. The EarthX arrived at its lowest charge of 13.2 volts. I did not bother to charge it up to full capacity, I just put it in and started the engine and it cranked over faster than the Odyssey battery did when it was full charged!
Works well saved 19 pounds off planes weight.
Q&A
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
The Earth X Lithium Batteries are not TSO'd and are not designed for certified aircraft.
Per the supplier: These batteries do not have any limitations. You are able to mount these in any direction you would like including upside down.
Per vendor, these batteries can be charged with any charger other than a desulfating charger.
Per Earth X: We recommend either the ETX680 or the ETX900 for the Rotax 912 without external alternator. The ETX 900 is the upgraded version of the 680 but both would work.
Yes, you can connect up to two batteries in series, however they would only be 24 volts, not 28 volts, as each battery is 12 volts.
We believe the "C" stands for Compact. The ETX680C is a smaller battery than the ETX680, but has the same voltage and cranking amps. The case dimensions are listed on the web page.
Per Earth X: Yes, you can connect two Earth X batteries in parallel.
No. The voltages are not the same and you will over charge the lead acid battery and drain the lithium.
ETX680 for normal climate or the ETX900 if they are in a colder climate or just want extra cold cranking amps.
