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. Can be used in experiemental aircrafts or race cars, just match up the alternator output with the correct battery.

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.   The fault indicator can be connected into your EFIS or wired to a 12volt LED light on your control panel (SOLD SEPARATELY) to alert you to the state of charge and state of health of the battery. (Please see manual for details)

EarthX is proud to be the most trusted brands in the experimental aircraft market.

The difference between the ETX680 and the ETX680C is physical size. The “C” is for compact.