beautypg.com

Only, Battery warnings, Low voltage cutoff (lvc) – ParkZone PKZ5180 User Manual

Page 4

background image

En

• Never charge the battery unattended. When charging the

battery you should always remain in constant observation to

monitor the charging process and react to potential problems

that may occur.
• After flight, the battery must be cooled to ambient temperature

before charging.
• 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.
• When flight battery balloons or swells, immediately remove

the battery from service.
If at any time during the charge process the battery begins

to balloon or swell, discontinue charging or discharging

immediately. Quickly and safely disconnect the battery, then

place it in a safe area away from flammable 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 fire.

• A battery that has ballooned or swollen even a small amount

must be removed from use immediately.
• 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.
• Do not over-discharge the Li-Po flight battery. Discharging

the battery too low can cause damage to the battery resulting

in reduced power, duration or failure of the battery. (See details

below).
Li-Po cells should not be discharged to below 3V each under

load.
In the case of the Li-Po battery used for the Extra 300, you will

not want to allow the battery to fall below 3V per cell during

flight.

Battery Warnings

ONLY

The Extra 300 receiver features a soft low voltage cutoff (LVC)

that occurs when the battery reaches 3V per cell under load.

When the soft cutoff occurs, the electronic speed control (ESC)

and receiver reduce power to the motor (regardless of the

power level set with the throttle stick). This prevents the voltage

of the battery from dropping below 3V per cell.
While it is possible to continue flying the aircraft after the soft

LVC occurs, this is NOT recommended. Battery discharge after

LVC will damage the Li-Po battery, resulting in less power and

shorter flight duration during subsequent flights, or complete

failure of the battery.
Discharging the battery after low voltage cutoff may result in

loss of control. Battery power may drop below the receiver’s

minimum operating voltage so flight controls do not respond

to the transmitter.
Stay aware of the power level of the battery/aircraft throughout

the flight, and when the aircraft requires more throttle than

typical, immediately land the Extra 300.
Note: Battery performance is reduced in cooler temperatures. It

is recommended the batteries are warm before flight.

CAUTION: ALWAYS disconnect the battery from the

aircraft to prevent trickle discharge of the battery. These

batteries require regular maintenance to keep them at a

usable charge level.

Low Voltage Cutoff (LVC)

®

3

This manual is related to the following products: