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Garmin GDL 39 Portable ADS-B and GPS Receiver User’s Guide
190-11110-00 Rev. G
3.5 Battery Installation
WARNING: The product contains a lithium-ion battery. To prevent damage,
remove the unit from the aircraft or vehicle when exiting or store it out of
direct sunlight.
1. Locate the lithium-ion battery assembly, if purchased.
2. The battery assembly is installed to the bottom of the GDL 39 following the
location information inscribed on the battery assembly.
3. If a mounting plate is used, insert the GDL 39 and battery assembly into
the mounting plate following the location information inscribed on the
mounting plate.
3.6 Charging the Battery
Charge the GDL 39 battery assembly until the LED on the battery turns off
before using on battery power. Typical charge time is 4 hours. Charge the battery
by connecting the appropriate power cable to the GDL 39 while it is attached to
the battery assembly.
The unit can be used while it is charging. Charge the unit within the following
temperature range
: 32° to 104°F (0° to 40°C). The battery should not be charged
while on the glare shield due to the heat from the direct sunlight. The battery will
not charge when the temperature is above 40°C.