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  Item found in the following categories;
> 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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  • Turnigy 4mm Heat Shrink Tube - RED (1mtr)

    Combo Price: $0.21   BACKORDER

  • PolyMax 3.5mm Gold Connectors 10 PAIRS (20PC)

    Combo Price: $1.69   IN STOCK

  • HXT 3.5mm Gold Connector w/ Protector (10pcs/set)

    Combo Price: $2.91   IN STOCK

  • Turnigy 4mm Heat Shrink Tube - BLACK (1mtr)

    Combo Price: $0.21   IN STOCK

  • Soldering Iron 230V 80W w/ Spare Tip

    Combo Price: $3.95   IN STOCK

  • Nylon XT60 Connectors Male/Female (5 pairs) GENUINE

    Combo Price: $3.75   IN STOCK

  • HobbyKing ESC Programming Card

    Combo Price: $6.15   IN STOCK

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 Customer rated
Total of 388 discussions.
cfrankfly  6 points - 7/30/2014
SimonK. does this have SimonK software. can I upload Simon K software to this device? does this ESC work well with multicopters?
 SkyLe 822 points
Does not come with SimonK firmware, but can easily be flashed with it. I use them on my quad (with SimonK) and I think they're great!
walter  1 points - 7/24/2014
I have a blade 400 with 440 motor I believe my e-flite 25 amp is going bad or getting to hot every time I try to take off with full throttle to take off the engine cut back, what do you think.
 SkyLe 822 points
Get a bigger ESC, like this one :-)
Rodrigo  4 points - 7/6/2014
how much time to restock?
 Jase73 527 points
normally within 30 days. but better to just backorder it and you will be at the top of the queue
 Kalos 371 points
in stock.
leandro.ifpb  29 points - 6/30/2014
Simonk is possible in this ESC?
 SkyLe 822 points
Yeah, pretty easy to flash too as there's some nice solder pads on the ESC. There's some pictures under the files tab to get you started, you'll need the BS NFET firmware!
rc copter  8 points - 6/15/2014
will this esc handle my turnigy nano tech 1000mah 2s 25~50c lipo pack/turnigy nano tech 1000mah 3s 25~50c lipo pack
 seawolf 105 points
Hi jitendra, This ESC is designed for 2-4S Lipoly. The lipo packs you have mentioned are within this range. If your motors don't draw more then 30A everithing should be fine :-)
 glenn_mech 486 points
yes absolutely.
Customer Reviews
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Overall Rating
Like it?
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

4 comments. Reply..

Overall Rating
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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

1 comment. Reply..

Overall Rating
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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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Overall Rating
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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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Overall Rating

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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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