YUNEEC H520, Quick Start Manual, Page: 8 / 46

BATTERY WARNINGS
AND USAGE GUIDELINES
WARNING:
Lithium Polymer (LiPo) batteries are signi fi cantly more
volatile than alkaline, NiCd or NiMH batteries.
All instructions and warnings must be followed exactly to
prevent property damage and/or serious injury as the
mishandling of LiPo batteries can result in fi re.
By handling, charging or using the included LiPo battery
you assume all risks associated with LiPo batteries.
If you do not agree with these conditions please return the
complete product in new, unused condition to the place of
purchase immediately
You must always charge the LiPo battery in a safe,
well-ventilated area away from fl ammable material
Never charge the LiPo battery unattended at
anytime.When charging the battery you must always
remain in constant observation to monitor the charging
process and react immediately to any potential problems
that may occur.
After fl ying/discharging the LiPo battery
you must allow it to cool to ambient/room temperature
before recharging.
To charge the LiPo battery you must use only the included
charger or a suitably compatible LiPo battery charger.
Failure to do so may result in a fi re causing property
damage and/or serious injury.
If at any time the LiPo battery begins to balloon or swell,
discontinue charging or discharging immediately.
Quickly and safely disconnect the battery, then place
itinasafe, open area away from fl ammable materials to
observe it for at least 15 minutes.
Continuing to charge or discharge a battery that has begun
to balloon or swell can result in a fi re.
A battery that has ballooned or swollen even a small
amount must be removed from service completely.
Do not over-discharge the LiPo battery. Discharging the
battery too low can cause damage to the battery resulting
in reduced power, fl ight duration or failure of the battery
entirely.
LiPo cells should not be discharged to below 3.0V each
under load.
Store the LiPo battery at room temperature and in a dry area
for best results.
When charging, transporting or temporarily storing the LiPo
battery the temperature range should be from approximate-
ly 40–120° F (5–49° C).
Do not store the battery or aircraft in a hot garage, car or
direct sunlight. If stored in a hot garage or car the battery can
be damaged or even catch fi re.
Never leave batteries, chargers and power supplies
unattended during use.
Never attempt to charge low voltage, ballooned/swollen,
damaged or wet batteries.
Never allow children under 14 years of age to charge
batteries.
Never charge a battery if any of the wire leads have been
damaged or shorted.
Never attempt to disassemble the battery, charger or power
supply.
Never drop batteries, chargers or power supplies.
Always inspect the battery, charger and power supply before
charging.
Always ensure correct polarity before connecting batteries,
chargers and power supplies.
Always disconnect the battery after charging.
Always terminate all processes if the battery, charger or
power supply malfunctions.
GENERAL SAFETY
PRECAUTIONS AND
WARNINGS
WARNING:
Failure to use this product in the intended manner as
described in the quick start guide and instruction manual
can result in damage to the product, property and/or cause
serious injury. A Radio Controlled (RC) multirotor aircraft,
APV platform, drone, etc. is not a toy!
If misused it can cause serious bodily harm and damage to
property.
WARNING:
As the user of this product you are solely and wholly
responsible for operating it in a manner that does not
endanger yourself and others or result in damage to the
product or the property of others.
Keep your hands, face and other parts of your body away
from the spinning propellers/rotor blades and other
moving parts at all times.
Keep items that could impact or become entangled away
from the propellers/rotor
blades including debris, parts, tools, loos clothing, etc.
Always operate your aircraft in open areas that are free
from people, vehicles and other obstructions.
Never fl y near or above crowds, airports or buildings.
To ensure proper operation and safe fl ight performance
never attempt to operate your aircraft nearby buildings or
other obstructions that do not o ff er a clear view of the sky
and can restrict GPS reception.
Do not attempt to operate your aircraft in areas with
potential magnetic and/or radio interference including
areas nearby broadcast towers, power transmission
stations, high voltage power lines, etc.
Always keep a safe distance in all directions around your
aircraft to avoid collisions and/or injury.
This aircraft is controlled by a radio signal subject to
interference from many sources outside your control.
Interference can cause momentary loss of control.
To ensure proper and safe operation of
the automatic landing function in Home Mode you must
start the motors with the aircraft in a position that has at
least 10 feet (approximately 3 meters) of clear and open
space around it and achieve a proper GPS lock.
Do not attempt to operate your aircraft with any worn
and/or damaged components, parts, etc. including, but not
limited to, damaged propellers/rotor blades, old batteries,
etc.
Never operate your aircraft in poor or severe weather
conditions including heavy winds, precipitation, lightning,
etc.
Always begin to operate your aircraft with a fully charged
battery.
Always land as soon as possible after the fi rst level low
voltage battery warning or land immediately after the
second level low voltage battery warning (as indicated by
the vibrations and audible alerts from the transmitter/per-
sonal ground station).
Always operate your aircraft when the voltage of the
battery in the transmiter/personal ground station is in a
safe range (as indicated by the battery charge status icon
on the screen of the transmitter/personal ground station).
Always keep the aircraft in clear line of sight and under
control, and keep the transmitter/personal ground station
powered on while the aircraft is powered on.
Always move the throttle control stick down fully and turn
o ff the motors in the event the propellers/rotor blades
come into contact with any objects.
Always allow components and parts to cool after use
before touching them and fl ying again.
Always remove batteries after use and store/transport
them per the corresponding guidelines.
Avoid water exposure to all electronic components, parts,
etc. not speci fi cally designed and protected for use in
water. Moisture causes damage to electronic components
and parts.
Never place any portion of the aircraft or any related
accessories, components or parts in your mouth as doing
so could cause serious injury or even death.
Always keep chemicals, small parts and electronic
components out of the reach of children.
Carefully follow the instructions and warnings included
with this aircraft and any related accessories, components
or parts (including, but not limited to, chargers,
rechargeable batteries, etc.).
CAUTION:
The electronic speed controls (ESCs) installed in the H520
are not compatible with any other product, and H520 is not
compatible with any other ESCs. Use of any other ESCs in
H520 will cause a crash, which may result in damage to the
product, property and/or cause serious injury.
FCC STATEMENT
This equipment has been tested and found to comply with the
limits for Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by
turning the equipment o ff and on, the user is encouraged to
try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment to an outlet on a circuit di ff erent
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for
help.
This device complies with part 15 of the FCC rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
RF EXPOSURE WARNING:
This equipment must be installed and operated in
accordance with provided instructions and the antenna(s)
used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and
must not be co-located or operating in conjunction with
any other antenna or transmitter. End-users and installers
must be provide with antenna installation instructions and
transmitter operating conditions for satisfying RF exposure
compliance.