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2 Pack ShareGoo 3A 5V DC-DC Converter Step Down UBEC Module For RC Quadcopter Plane FPV Holder Camera Servo Power Supply

Q: Which plug is the 12v input and which plug is the 5v output?

There are arrows on the unit pointing to the flow of electricity. The arrow is pointing in the direction of the device that gets 5v

Q: Can I swap ends of this without issue? I need the female end to plug a fan into and the male end to receive power.

No, you can not. The arrow on the covering shows the flow of power. The arrow points to the device being powered.

Q: Would this work with a 12 V 9Ah battery?

Probably not, the voltage is at the bottom end of the manufactures specs but because you have a lot of amps, you’ll be able to hold the voltage, even though low, for some time. For the price, I think it’s worth the chance.

Q: Could I use these to power a 5v rc fan with an adapter off a 3s balance lead?

If you are talking about the lead that is used to charge the battery then that is not a wise idea. You should use the power leads instead. The BEC steps down the voltage to 5v. Check to make sure the current matches close to the fan. Another possible option is the use the BEC to power the receiver and then use the receiver to power the fan similar to how you would power a servo. If you do that then you should disable the BEC on your ESC

4.4/5

Product ID: 343982622

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2 Pack ShareGoo 3A 5V DC-DC Converter Step Down UBEC Module For RC Quadcopter Plane FPV Holder Camera Servo Power Supply

Have a Question? See What Others Asked

Which plug is the 12v input and which plug is the 5v output?

Can I swap ends of this without issue? I need the female end to plug a fan into and the male end to receive power.

Would this work with a 12 V 9Ah battery?

Could I use these to power a 5v rc fan with an adapter off a 3s balance lead?

Common Questions

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Fantastic and great service. Shipping was faster than expected.

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AR$206263

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