HobbyKing™ Q-BEC Variable Output 10 Amp (6-25V) SBEC for LiPoly

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Certified Buyer Rated

Nov 15, 2015

This is a quite good step-down regulator (i.e. it can only produce output voltages lower than the battery voltage). I measured output voltage and noise relative to output current (refer to picture named "BEC comparison" under the FILES tab). Short story is that the unit performs well up to 9A, but at 10A I got 400mV noise (was at 80mV at lower currents). So I would say this is a 9A unit, because it's not really usable at 10A (too much noise). I measured 6.11V at 0A, 5.76V at 5A and 5.42V at 9A. So it holds up quite well as the load increases. It doesn't get very warm either (didn't measure efficiency). I could have done without the display (to save some weight), but it is accurate, so OK. I like that the output is adjustable, so you can choose the optimal voltage depending on your servo specifications. Plan to use it on my 450 which has had problems due to BEC overload (YEP 40A ESC). Recommend.

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• Quality
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Customer Rated

Feb 05, 2015

it is a step down, very precise, very stable.
I am very satisfied.The display show the actual voltage.