E T X T S O L I T H I U M B A T T E R I E S
17
replaced.
Slow Flashing
(5s on/5s off)
Greater than
15.2V
Over-charging (due to
faulty charging system
regulator)
Verify aircraft charging system is
functioning.
Slow Flashing
(5s on/5s off)
(< 60 min. time
period)
13.2V
–
14.6V
Cell to cell charge levels
are not equal. The
battery’s BMS cell
balancing circuitry needs
time to re-balance the cell
charge level.
Charge the battery with an
approved charger and observe
fault LED. If LED persists, charge
the battery a second time with
approved charger. If the LED fault
persists, the battery should be
replaced.
Solid Light
Any voltage
BMS electronics issue
Isolate the battery from the
aircraft (disconnect positive or
negative cable). Disconnect the
battery’s fault wire from
the
aircraft
’s LED or EFIS. If the
fault
LED on the battery is not
extinguished, the battery should
be replaced.
Solid Light that
turns off after
3 minutes
Any voltage
Short Circuit protection
was activated
Verify normal voltage (13.2 to 14.5
volt) at the battery terminals.
Battery can be returned to service.
Short Flashing
(2s on/2s off)
Any voltage
Battery temperature very
high (> 85
°C / 185°F)
due to environment or
excessive discharge.
If due to excessive discharge
amperage, let the battery cool
down prior to cranking or
charging. If environmental
temperature is too high, engineer
means to cool battery when in
service.
The ETX Lithium battery is an extremely reliable battery with a longer useful life than
comparable lead-acid batteries.
Despite the high reliability, you may encounter situations where the battery does not operate
as expected. Go to
and review the FAQ section for the most up to
date comprehensive troubleshooting information.
