User Manual

exceptions of the battery, including battery short-circuit, excessive discharging current, etc.
12. Sleep protection: the battery will enter into sleep if it is not connected to any electrical equip-
ment 20 minutes after it is turned on.
13. Communication: the aircraft can acquire real-time information of the battery through the com-
munication interface on the battery, including voltage, battery level and current.
Optical ow positioning system
The optical ow positioning system applies to any environment having a height not greater than 3m
and with weak or no GPS signals, particularly for indoor ight. See the gure below.
Using steps of the optical ow positioning system
1.Switch the remote controller to N Mode: normal ight mode.
2.Turn on the power. The aircraft status indicator will be green.
3.The aircraft takes o. The optical ow positioning system will hold the aircraft in position.
The intelligent battery has the following functions:
1.Battery status display: the battery has a status indicator to indicate current status of the battery.
2.Battery life display: the battery has a status indicator to indicate life of the battery.
3.Self-discharging protection for battery storage: if the battery is stored for 10 days without any opera-
tion when its battery level is higher than 65%, it can trigger the self-discharging function to lower the
battery level to 65% for the protection of the battery. The self-discharging process may last for about
two days with no LED indication. The battery may heat up slightly, which is normal.
4.Balance charging protection: cell voltage of the battery can be automatically balanced to protect
the battery.
5.Overcharging protection: Charging will be automatically stopped when the battery is full.
6.Charging temperature protection: the battery will be damaged if it is charged at a temperature
lower than 0℃ or higher than 40℃. This function is to ensure the battery will not be charged at such
temperatures.
7.Overcurrent protection during charging: heavy current charging can severely damage the battery.
Charging will be stopped if the current exceeds 8A.
8.Over-discharging protection: over-discharging can severely damage the battery. The battery output
will be cut o if it is discharged to 12V.
9.Short-circuit protection: the output will be cut o to protect the battery if short-circuit is detected.
10.Cell damage detection: a warning for battery damage will be sent out if cell damage or signicant
cell imbalance is detected.
11.Records of use exceptions of the battery: the app can provide the records of the last 31 times of use
Scenarios that may contribute to failure of the optical ow positioning system
1.When the aircraft takes a low-altitude ight (below 0.5m) at a rapid speed, the optical ow posi-
tioning system may fail to locate the aircraft.
2.Solid color plane.
3.A strongly reective, reective, water or transparent surface (such as glass oor, ice surface and
lake surface).
4.Flying with excessive speed (exceeding 3m/s at 1m above the ground or 6m/s at 2m above the
ground).
5.Surface of a moving object (over grass, crops and bushes blown by wind or over a crowd).
6.An extremely dark (the range) or bright (range) environment.
7.A surface that is highly absorptive to ultrasonic waves (e.g. thick carpet and elastic cotton).
8.A surface with sparse texture.
Less than 3m
9.A surface with highly repeated textures (e.g. black and white lattice tiles).
10.Any slopes steeper than 30º can impede the receiving of ultrasonic waves.
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