User Manual

4
EN
The Battery Charger (EFLC1003) included with the UMX Extra 300 3D 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 fire, 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 you do not agree with these conditions, return your complete UMX Extra 300 3D model in
new, unused condition to the place of purchase immediately.
• DONOTUSEANi-CdORNi-MHCHARGER.Failuretochargethebatterywithacompatiblechargermay
cause fire resulting in personal injury and/or property damage.
• Ifatanytimethebatterybeginstoballoonorswell,discontinueuseimmediately.Ifchargingordischarg-
ing, discontinue and disconnect. Continuing to use, charge or discharge a battery that is ballooning or
swelling can result in fire.
• Storethebatteryatroomtemperatureinadryareaforbestresults.
• Whentransportingortemporarilystoringthebatterythetemperaturerangeshouldbefrom40–120ºF.Do
not store battery or model in a car or direct sunlight. If stored in a hot car, the battery can be damaged or
even catch fire.
• Li-Pocellsshouldnotbedischargedtobelow3Veachunderload.
• Donotcoverwarninglabelswithhookandloopstrips.
WARNING:OnlyuseanE-ite6Vpowersupplywiththischarger.DONOTusea12Vpowersupplyor
property damage and injury could occur.
Battery Warnings
Low Voltage Cutoff (LVC)
WhenaLi-Pobatteryisdischargedbelow3Vpercell,itwillnotholdacharge.TheUMXExtra3003DESC
protectstheightbatteryfromover-dischargeusingLowVoltageCutoff(LVC).Beforethebatterychargede-
creasestoomuch,LVCremovespowersupplyfromthemotor.Powertothemotordecreasesandincreases,
showing some battery power is reserved for flight control and safe landing.
When the motor power decreases then increases, please land the aircraft immediately and recharge the
flight battery.
Disconnect and remove the Li-Po battery from the aircraft after use to prevent trickle discharge. Before
storage, charge the Li-Po battery to full capacity. During storage make sure battery charge does not go
below3Vpercell.
NOTICE:RepeatedyingtoLVCwilldamagethebattery.
Never leave
charging Batteries
unattended.
Always charge
Batteries away from
flammable materials.
Never charge
Batteries outside safe
temperature range.
Never charge
Batteries outside
recommended levels.
Store
Batteries
safely.
Never charge
damaged Batteries.