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> Speed Controllers > All Speed Controllers
> Speed Controllers > HobbyKing ESC
> Speed Controllers > 20 to 39 Amp


Hobby King 30A ESC 3A UBEC

Hobby King 30A ESC 3A UBEC

Constant Current: 30A
Burst Current: 40A
Battery: 2-4S Lipoly / 5-12s NiXX
BEC: 5v / 3A
Motor Type: Sensorless Brushless
Size: 54 x 26 11mm
Weight: 32g

Programming Functions:
Battery Type: Lipo /NiXX
Brake: On / Off
Voltage Protection: Low / Mid / High
Protection mode: Reduce power / Cut off power
Timing: Auto / High / Low
Startup: Fast / Normal / Soft
PWM Frequency: 8k / 16k
Helicopter mode: Off / 5sec / 15sec (Start up delay)

User manual can be downloaded from the files Tab.


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Weight: 47g Quantity: 
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 Customer rated
Total of 368 discussions.
cj112  90 points - 4/17/2014
Martin  1 points - 4/14/2014
Thanks tehPajka, any sugestions on the KK2 setup to work with these ESCs without SimonK?
 tehPajka 192 points
It is not that easy to say, PI settings also depend on the motors that you are using, size and pitch of the props, size of your frame and weight of the whole copter. Thats why everywhere are just tutorials showing how to find your specific PI settings by testing and changing values, because every custom copter is more or less different. But without SimonK you have to start lower than the stock settings and you have to set it right in acro mode before adjusting auto level mode. And "thanks for answer" is given by clicking the thumbs up icon beside the name. Happy testing :-)
Martin  1 points - 4/13/2014
Hi guys, just finished building my first quad, I did a few test to set the KK2 parameters, in auto level mode it oscillates a lot, can it be caused because I didn't flash these ESC with the SimonK yet? Thanks
 tehPajka 192 points
The KK2.x could be setup to work with these ESCs without oscilation even without SimonK, but it will be very sluggish, because of low refresh rate. With SimonK these ESC become many times faster, so you can set the PI settings much higher and response will be fast and crisp. Also dont forget to flash lastest firmware to your KK2,x, as there are improvements to the performance.
grmis  113 points - 4/9/2014
Hi. You need this programmer: USBasp AVR Programming Device for ATMEL proccessors ( download the KKflashtool) Then, either you make a plug yourself, or buy this: Atmel Atmega Socket Firmware Flashing Tool
quattroerre  28 points - 4/8/2014
The programming card do I need if I want to flash my HobbyKing esc 30a with Simonk firmware?
Customer Reviews
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excellent cheap ESC, exactly as described, easy to program with TX and very good throttle response. I'm using it with a 4200kv outrunner and 3s lipo with 64mm EDF, great setup!. thanks HK

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Picked this up a week or so ago the unit came in perfect condition. programming was not required as it worked configured out of the bag. it would be beneficial to have a detailed spec sheet on beep config packaged w eack hk unit sold rather than hunting online or waiting for someone to post. would buy or reco again

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I have bought this and receivied few days ago. It was well packed. I had 1 flight with it, and it was good. No problems occured during the flight. After flight it was barely hot. I recommend this esc, because it's possible to program, and it has good price/quality ratio. :)

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Good quality and well built, pre progged from box with generic settings, but easily programmed from TX. Bang on the mark for a speed controller

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It is worth spending the extra dollar or so to have the 3.5 mm connectors already on these esc's. This was money well spent and can handle the rated 30 Amps.

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