Spektrum AR9200
7
Spektrum AR9200
8
Battery Voltage
IMPORTANT: D0 NOT use a 4-cell 4.8-volt battery to power
the PowerSafe Evolution.
Four-cell 4.8-volt batteries do not provide enough voltage headroom
(additional margin needed) necessary to power the system when heavily
loaded. Under load the system voltage can drop below the voltage system’s
minimum operating voltage threshold (3.5 volts) and cause loss of control.
The PowerSafe Evolution is capable of handling voltages from 6.0 to 10.0
volts. The voltage limitations are generally the servos. The output voltage
to the servos is regulated to 5.9V. Each voltage regulator is capable of
handling 10 amps, for a total of 20 amp maximum current capability.
Be aware that NiMH batteries have a tendency to false peak
when being fast charged.
Be especially careful when using NiMH
batteries that they are fully charged and have not false peaked.
Many pilots are using 2-cell LiPo batteries to power their aircraft. LiPo’s
offer greater capacity for their size and weight, and are easier to manage
when charging.
Note: When a battery is connected to the PowerSafe Evolution, a low current drain of
less than 1mA occurs even when the switch is turned off. If the system is going to be
stored for any length of time, it’s important that the battery(s) be disconnected from
the PowerSafe Evolution to prevent over discharge.
Installation
The PowerSafe Evolution requires all three remote receivers to be plugged
in for the system to operate. Each receiver functions independently and
offers a more secure RF link in difficult environments. The added security
of redundancy should a failure occur outweighs the slight additional weight
and cost penalties.
