senseFly EBEE RTK Extended User Manual page 155

for about 40 minutes. Frequent altitude changes, presence of wind, use of old
batteries and/or frequent photo acquisition may significantly reduce the flight
endurance. Batteries perform better at medium or high air temperature and it
is normal to observe shorter flight times in cold weather.
The eBee RTK is powered by a Lithium Polymer (LiPo) battery composed of three
cells connected in series. A single LiPo cell can have a range between 3 V (empty)
and 4.2 V (full) in its normal operating range. This results in an empty battery
voltage of 9 V and a fully-charged battery voltage of 12.6 V. A well-balanced and
healthy battery should have all three cells at a voltage very close to each other
and between 3 and 4.2 V.
The charger delivered with your drone automatically checks for healthy voltages
of all three cells and only attempts charging if they are within limits. If the cells
are out of balance, the charger will take care of balancing them. If the charger
detects a voltage outside of the allowable range it will indicate an error either by
flashing the status LED red, or by the LED staying off. This means that the battery
is over-discharged and should be discarded.
Caution: The batteries delivered with your drone are designed to be
charged with the charger delivered with your eBee RTK. senseFly Ltd
cannot be held responsible for any consequences resulting from us-
ing a different charger. In particular, using a charger improperly con-
figured or designed for other types of batteries may lead the battery
pack to be permanently damaged or to catch on fire.
LiPo batteries do not exhibit any memory effect. We recommend that you always
fully charge them after use even when they are only partially discharged. When
not using the battery store it in the carrying case provided with your drone. Avoid
leaving the battery in direct sunlight.
Maintenance and repair of the eBee RTK
155