Note: Not FAA Approved. Intended for use in experimental aircraft only.
The ETX680C lithium battery only weighs 3.9 pounds but delivers 680 cranking amps!
This battery is intended for 400ci engine size or less; 60 amp alternator/generator or less.
The ETX battery series is fully protected by an integrated battery management system (BMS) that protects the cell’s from over discharge, overcharge, short circuit, temperature, plus cell balancing to ensure charge levels are equal. Additionally, the ETX Hundred series aircraft batteries have redundant electronic circuits and battery fault indication. The fault indicator can be connected into your EFIS or wired to a 12volt LED light on your control panel to alert you to the state of charge and state of health of the battery. (Please see manual for details)
Note: The difference between the ETX680 and the ETX680C is the physical size. The “C” is for the compact.
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
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).
ETX-680 6.5 in (L) x 3.1 in (W) x 6.6 in (H) 166mm (L) x 79mm (W) x 168mm (H) ETX-680C 5.9 in (L) x 3.4 in (W) x 4.5 in (H) 150mm (L) x 86mm (W) x 115mm (H)
Environmental Rating (resistance to water intrusion)
IP 66 (wash down with a high pressure washer)
-30°C to +60°C
-40°C to +70°C
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 saving.
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 the 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!
Great battery. Light weight and reliable, itâ€™s worth every penny
July 31, 2020
Arrived as promised, very happy with the batteries performance.
July 30, 2020
Only a few days in service but the cold cranking amps really are there. Replaced an Odyssey 680 battery and was able to squeeze into padded holder. Engine turns over significantly better- had become concerned about starting before. We will see about durability but for now, worth it.
February 25, 2020
Great battery at a quarter of the weight.
December 13, 2019
Amazed how light it is.
August 2, 2019
Q: Does this item ETX680C ship internationally?
Yes, we can export this item.
Q: Are the EarthX ETX680 a side post connector?
These are top post.
Q: When will this EarthX battery be available for certified aircraft?
At this time, EarthX only makes the ETX-900 in TSO version. See Part# 11-18242.