E T X T S O L I T H I U M B A T T E R I E S
14
Hold down hardware
Operating Instruction
See the ICA for operating instruction, or for a specific aircraft, refer to the instruction given
in the STC like an Aircraft Flight Manual Supplement (AFMS).
Maintenance
This is a maintenance free battery with no internal replaceable components. Charging is
only required as needed (see charging section in this manual). Inspection and testing is
required annually.
For more details, see the Instructions on Continued Air Worthiness (ICA) manual.
Charging
Failure to follow these instructions may result in damage to the battery!
Never jump start from a car size battery or larger!
If at any time the aircraft will not start, or the battery seems low, or the voltage is less than
26.4 volt, charge it for the recommended time and charge rates shown below and disconnect
the charger when charging is complete. The recommended and maximum charge rate is
specified on the top label of the battery. Never exceed the maximum charging amps for
your battery.
This table shows typical charging times for the battery:
Model
Charging Amps
Charging Time
ETX680-24-TSO
5 amp
3 hour
Lithium batteries have a very low self-discharge rate which means the battery, if
disconnected from the aircraft, could “hold its charge” for over a year. However, some
aircraft may have systems that use a small amount of power with the “Master switch” off. In
those cases, we recommend disconnecting a battery cable from the battery during long term
storage (greater than 6 months).
Only an LiFePO
4
battery charger shall be used; such as Optimate TM-281 (5 amp).
