Charging the battery, Charging warnings, Battery charging process – E-flite UMX Radian BNF User Manual
Page 4: Led indications, Charging

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EN
Charging the Battery
Refer to the charging warnings. It is recommended
to charge the battery while you inspect the
aircraft. The fl ight battery will be required to
confi rm proper aircraft operation in future steps.
Battery Charging Process
NOTICE: Charge only batteries that are cool to the
touch and are not damaged. Look at the battery
to make sure it is not damaged e.g., swollen, bent,
broken or punctured.
1. Insert the charger into a USB port.
2. Properly connect the battery into the charger.
The end cap of the battery is specifi cally
designed to allow the battery to fi t into the
slot one way (usually with the label on the
battery facing outward) to prevent reverse
polarity connection. However, check for proper
alignment and polarity.
3. Always disconnect the fl ight battery from
the charger immediately upon completion of
charging.
CAUTION: Only use chargers specifi cally
designed to charge the included Li-Po
battery. Failure to do so could result in fi re,
causing injury or property damage.
CAUTION: Never exceed the recommended
charge rate.
USB Li-Po
Charger
EFLC1008
SOLID RED LED
–Charging
DC Input:5.0V 350mA
DC Output:4.2V 300mA
LED OFF
–Charge
Complete
The Battery Charger (EFLC1008) included with your
aircraft has been designed to safely charge the
Li-Po battery.
CAUTION: All instructions and warnings
must be followed exactly. Mishandling of Li-Po
batteries can result in a fi re, personal injury and/or
property damage.
• By handling, charging or using the included
Li-Po battery, you assume all risks associated
with lithium batteries.
• If at any time the battery begins to balloon or
swell, discontinue use immediately. If charging
or discharging, discontinue and disconnect.
Continuing to use, charge or discharge a battery
that is ballooning or swelling can result in fi re.
• Always store the battery at room temperature
in a dry area for best results.
• Always transport or temporarily store the
battery in a temperature range of 40–120º F
(5–49° C). Do not store the battery or model in a
car or direct sunlight. If stored in a hot car, the
battery can be damaged or even catch fi re.
• Always charge batteries away from
fl ammable materials.
• Always inspect the battery before charging.
• Always disconnect the battery after charging,
and let the charger cool between charges.
• Always constantly monitor the temperature
of the battery pack while charging.
• ONLY USE A CHARGER SPECIFICALLY DESIGNED
TO CHARGE LI-PO BATTERIES. Failure to charge
the battery with a compatible charger may
cause a fi re resulting in personal injury and/or
property damage.
• Never discharge Li-Po cells to below 3V
under load.
• Never cover warning labels with hook and
loop strips.
• Never leave charging batteries unattended.
• Never charge batteries outside
recommended levels.
• Never charge damaged batteries.
• Never attempt to dismantle or alter the charger.
• Never allow minors to charge battery packs.
• Never charge batteries in extremely hot or
cold places (recommended between 40–120° F
(5–49° C)) or place in direct sunlight.
Charging Warnings
CHARGING
(Solid Red)
........................
MAX CHARGE
(off )
...............................
LED Indications
Charging a fully discharged (not over-discharged)
150mAh battery takes approximately 30–40
minutes.
CAUTION: Once charging is complete,
immediately remove the battery. Never
leave a battery connected to the charger.