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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

  RATED:

Hobby King 20A ESC 3A UBEC

Hobby King 20A ESC 3A UBEC

Specs:
Constant Current: 20A
Burst Current: 25A
Battery: 2-4S Lipoly / 5-12s NiXX
BEC: 5v / 3A
Motor Type: Sensorless Brushless
Size: 54 x 26 11mm
Weight: 30g

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)

Note:
User manual can be downloaded from the files Tab.





PRODUCT ID: F-20A

This product available from a warehouse near you!


Weight: 45g Quantity: 
United States Warehouse In Stock View Item
stock
10+
Price$8.00


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 Customer rated
5111
crowns
  
 
Total of 201 discussions.
chly3001  368 points - 7/29/2014
 
stock? :(
Michael  4 points - 7/29/2014
 
Yup, that's what I was looking for. Thanks! I don't know why I couldn't find that info on google. Nothing explicitly states what part of the connector is being measured and the manufacturer doesn't even include that info. I uploaded a gigantic picture before I saw your final answer, so it's there if anybody wants to reference it. Thanks again dude
 Mosa 98 628 points
Cool, Glad to help out, that's what this discussion is here for after all* spreading the know-how around. I still don't understand why you got connectors on your ESC when I didn't get any on the 3 I bought...
Michael  4 points - 7/29/2014
 
Thank you for your effort, but my question is what size plugs are currently on these ESCs. They come with three plugs that are of unknown size. I don't need to know what size I SHOULD use, I need to know what size they ARE. I have measured them at 3.5mm at the widest part of the barrel, and 3mm at the tip. I have what I think is a 4mm banana plug and it measures at 4.5mm at the widest part of the barrel and 3.5mm at the tip. So I'm still in the dark. Please try again, I would be very grateful if anybody could settle this for me.
 Mosa 98 628 points
Sorry, mine didn't come with plugs so I didn't pick up what u meant! They will be 3.5mm, HK put 3.5mm plugs on anything from 15-50A. If u like, u can put a pic in the files folder and I can check, but I'm sure it'd be 3.5mm.
 Mosa 98 628 points
the inner diameter of the female plug is 3.48mm on a 3.5mm plug, the male is 3.55mm at it's widest point. (I just measured)
BEST ANSWER CREDIT AWARDED
Michael  4 points - 7/28/2014
 
Need to know what size banana plugs to order to fit into here. How do you even measure a banana plug/connector?
 Mosa 98 628 points
3.5mm if you're going to draw less than 60A*4S* use 3.5mm. greater than 65A*4S* use 5mm. I just use 3.5mm for everything 80A car ESC on 3S= 3.5mm. 4x20A ESCs on a quad, on 3S, 3.5mm.
jpleaner  19 points - 7/27/2014
 
Hi Folks. Just bought 4 of these and flashed with SimonK successfully. All was fine for the first 5 minutes on a 450size quad and them one of the ESCs died. I've had a run of bad luck setting up multi rotors lately. Can I chalk this down to a bad ESC or is there something else I should know about? Running on 4S 4000mah, DT750s with 1047 props.
 jpleaner 19 points
Video of the dead ESC is here for you info... *******youtu.be/qb8LRHB9i_c
 Mosa 98 628 points
you should be fine, I'd count it as a bad ESC, but I'd be using 25-30A ESCs myself, despite ^V=>A, cheaper ESCs sometimes don't like their rated 'con' amps at high voltage even for a sec.
 Mosa 98 628 points
I'd use the 25A Turnigy 'Q-brain if I was building again. check it out.
BEST ANSWER CREDIT AWARDED
 jpleaner 19 points
Thanks Mosa98. I'm leaning toward your thinking that I should get some 25-30 ESCs to be sure. Regarding the Q-Brain, do you think it would be better for performance using 4 separate 30A ESCs flashed with SimonK rather than the Q-Brain. (Not sure if Q-Brain has same performance as SimonK ESCs???)
 Mosa 98 628 points
glad to help out, I don't know if the Q-brain is as good as Simon-k flashed ESCs, but I've seen a pair of quads (KK2.1 board, 2.2ah 20C 3S, ST360 frame & stock 1100kv motors) one with a Q-brain and the other with 'Afro' ESCs (which I believe are Simon-k) to my eye the performance was identical, (both a lot better than my Quad which is the same but with multi-star ESCs.) The thing that has sold me the Q-brain is the fact it is so cheap (compared to buying 4x25A ESCs) and small, and you don't need a power dis board. Perfect!
Customer Reviews
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pricer
20 likes
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Very nice esc.Good throtle respone.Thanks hk.


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Szcs Zoltan
22 likes
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Kny kis helyen is el fr s az ra is j!!!


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PuntoFire
67 likes
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Nice, I have ordered 30A one, and received it, now waiting for this one. Nice esc for the price, really. :)


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akin agrag
195 likes
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dragon cn deal thank hk


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gutobissaco
2 likes
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Great product, I am almost two years and never had problems, mine is down to the water and returned to work.


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