Spektrum SPMAR9200 - Manual (Page 5)

Spektrum AR9200 5
EN
Spektrum AR9200 5
Battery Requirements
Using One Battery
The PowerSafe Evolution allows the option of using one or two battery
packs. When using one battery simply plug the battery into either one of
the two battery connectors (BATT1 or BATT2).
Using Two Batteries
The PowerSafe Evolution offers a true redundant dual battery system with
built in dual voltage regulation. When using two battery packs, each pack
functions independently and is isolated from the other, so that if one pack
should fail (open circuit, short circuit, or become discharged), the other
battery will provide power to operate the system.
When using dual batteries it’s important that both batteries be of the same
capacity, number of cells and ideally of the same age and condition. Note:
It’s normal for one battery to discharge slightly more than the other. This
is the nature of a truly redundant isolated battery system. The battery that
has the higher voltage or lower internal resistance will discharge at a faster
rate. Generally the difference is negligible (less than 10%).
When using two batteries, the total available capacity equals the sum total
of both batteries e.g., BATT1—2000mAh + BATT2- 2000mAh = a total
capacity of 4000mAh.
Note: MPX to EC3 and Deans Ultra connector adapters are available
separately.
It’s important to select a battery(s) that has more than adequate capacity to
provide the necessary flight time. Our staff has been recording in-flight data
to determine typical current consumption of aircraft in flight. Following are
two graphs that illustrate the in-flight current draw of the radio system.
Note: Current draws may vary depending on your servos, installation and
flying style.
The following setup is shown as a worst-case scenario indicative of some
aerobatic pilots’ setups. It is not recommended to use this setup without
proper voltage regulation for your servos.
Airplane - 40% YAK
Servos - 9-JR8711’s 1-8317 (throttle)
Batteries - Two 4000mAh 2-cell 7.4-volt LiPo’s
Regulator - None
Note: JR8711’s and 8317’s are rated at a maximum of 6-volt 5-cell use.
Using higher voltages will void the warranty.
Engine - DA150
Weight - 40 lbs
Flight envelope - Hard 3D
Average current - 2.62 amps
Peak current - 17.8 amps
Milliamps used per 10-minute flight - 435mAh