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Spektrum SPMAR9200 User Manual

Page 5

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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

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