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.
|Capacity||12.4Ah @ I C Rate (See charts Below)|
|Capacity vs Temperature||25°C= 100% |
|Self-Discharge Rate||<3% / month @ 25°C|
|Pulse Crank Amps (PCA)||680A (3 sec @ 25°C, voltage >9V|
|Cold Crank Amps (CCA)||320A (modified SAE test, 3 sec @ 0°F, volts > 7.2V)|
|Continuous Discharge Amps||100A|
|Standard Charge Voltage||13.9 - 14.6V|
|Maximum Charge Voltage||15V|
|Recommended Charge Voltage||5 - 15A|
|Max Charge Amps||60A (from vehicle charging system)|
|Life (Charge cycles, 80% depth of discharge)||4000 cycles @ 1°C discharge rate, |
25°C 2000 cycles @ 10°C discharge rate, 25°C
|Life (Years)||8 Years|
|Weight||ETX-680 4.1 lb (1.86Kg) |
ETX-680C 3.9 lb. (1.8kg)
|Dimensions||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)|
|Operating Temperature||-30°C to +60°C|
|Storage Temperature||-40°C to +70°C|
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
ETX680 LITHIUM AIRCRAFT BATTERY
Installed in my RV6A.. Works great!! Talk about some cranking power, well worth the money.
The battery fits perfectly and came quickly--havent had a chance yet to actually power something up with it, but that will come.
Been in plane a few weeks. Power is awesome and it weighs a lot less than the dry cell. Money well spent.
Great battery. Light weight and reliable, it’s worth every penny
Arrived as promised, very happy with the batteries performance.
Very light well constructed , comes with terminal bolts.
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.
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.
Yes, we can export this item.