YUNEEC TYPHOON Wizard - Page 7

LiPo battery the temperature range should be from approxi-
mately 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 fire.
•
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.
IMPORTANT NOTE: It's safer and better for the longevity of
the battery to store it only partially charged for any length
of time. Storing the battery approximately 50%, charged
(which is around 3.85V per cell) is typically best, however, it
will
take some careful management of the charge time and
the use of a volt meter to achieve this voltage. If you have
the equipment and skills to achieve the 50% charge level for
storage it is recommended. If not, simply be sure to not
store the battery fully charged whenever possible. In fact, as
long as the battery will be stored at approximately room
temperature and for no more than a few weeks before the
next use, it may be best to store the battery in the
discharged state after the last flight (as long as the battery
was not over-discharged on the last flight).