E T X S E R I E S L I T H I U M B A T T E R I E S
The table below shows the most common fault conditions and possible causes.
Slow Flashing
(5s on/5s off)
Battery over-discharged
(due to faulty charging
system)
Charge battery. Once charged, the
light will stop flashing.
Slow Flashing
(5s on/5s off)
Charge battery. If voltage drops
below 13.2V within a few days,
discontinue use.
Slow Flashing
(5s on/5s off)
(> 1 hour time
period)
Discontinue use. If in flight, this is
not an immediate issue unless it is
in conjunction with a charging
system failure.
Slow Flashing
(5s on/5s off)
Over-charging (due to
faulty charging system)
If in flight, shutoff charging system
immediately. Aircraft over-voltage
protection is required if alternator
charging system is greater than 20
amps (i.e. over voltage crowbar
circuit)
Slow Flashing
(5s on/5s off)
(< 30 min. time
period)
Cell to cell charge levels
are not balanced
May come on briefly during
periods of high current charging
until the cells are automatically
balanced. Try charging with a
plugin charger, like an Optimate
Lithium charger.
Discontinue use. If in flight, this is
not an immediate issue unless it is
in conjunction with a charging
system failure.
Solid Light that
turns off after
3 minutes
Short Circuit protection
was activated
Nothing needs to be done.
Short Flashing
(2s on/2s off)
High battery temperature
(> 65°C / 150°F)
Let battery cool down prior to
cranking or charging.
A sustained fault can indicate a serious issue with the battery or vehicle charging system that requires
immediate attention. Discontinue use until the issue is resolved and the battery no longer indicates
a fault. Continued use of a faulty battery can result in a cell rupture, the release of flammable vapors,
smoke and or a fire.
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