leptron Precision RDASS, Manual

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2.2 Install, Remove, and Charge a Battery
Condition(s):
1. Battery charger plugged into wall outlet
2. Depleted Syma X5 flight battery
3. Syma X5 power switch off
4. Remote control power switch off
Standard(s):
1. Identify when battery is depleted during flight
2. Remove battery from Syma X5
3. Connect battery to battery charger
4. Identify when a battery is fully charged
5. Iinstall fully-charged battery in Syma X5
Crew Actions:
Pilot on the Controls:
1. Lower throttle to full down position when low battery
voltage is encountered
2. Turn off the Syma X5 power switch
3. Turn off the remote control power switch
Visual Observer:
1. Assist Pilot on the Controls replacing the depleted Syma
X5 battery with a fully-charged battery
Procedure:
When the quadcopter has depleted the battery, the lights on the
quadcopter blink slowly and the aircraft loses power. It is time to
replace the battery with a fully-charged battery and charge the
depleted battery. To charge a battery: connect the battery to a
single-port or five-port charger. When the depleted battery is
connected to the charger correctly, the red LED light will illuminate.
When the battery has completed charging the red LED light will
extinguish. This indicates that the battery is fully-charged and ready
to fly. The charging time is approximately 2 hours and the expected
flight time is five to eight minutes. Once the battery is fully-charged,
disconnect the battery from the charger, open the battery
compartment on the Seema X5, and connect the battery. Close the
battery compartment and continue flying.