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Old Feb 11, 2010, 08:06 AM
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Joined Dec 2009
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Connect Battery to Ubec.

I'm a super beginner and i'm facing a problem
I have this battery:http://www.hobbyking.com/hobbyking/s...roduct_Name=ZI

And this UBEC:http://www.hobbyking.com/hobbyking/s...idProduct=3735.
I can't connect them at all.
There is some sort of connector to connect them but im not sure.
Can anyone help me?
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Old Feb 11, 2010, 08:46 AM
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Vaffel's Avatar
Norway
Joined Aug 2008
270 Posts
Well, you need to solder on a JST-plug on the battery side to go into the input connector on the UBEC. Im guessing you have an speed controller also in your setup? You would then probably want to solder on a wire with a JST-connector on the batteryplug on the speed controller. Understand?
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Old Feb 11, 2010, 11:09 AM
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Joined Mar 2002
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The way I would do it would be to cut the JST connector (the red one) on the UBEC off. Then strip about a 1/4" of the insulation off the wires. Next solder the + positive wire of the UBEC to the Positive wire of your ESC. Then solder both - negatives together. Then you may use whatever connector you have on your battery to match the ESC and UBEC that are soldered together. This way if you have more than one battery you wouldn't have to solder a new jst plug on each one. Hope this helps.
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Old Feb 11, 2010, 11:16 AM
Glenn
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United States, WI, Oconto Falls
Joined Jan 2004
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Quote:
Originally Posted by chewchun View Post


I can't connect them at all.

Can anyone help me?
The little black plug plugs into a unused reciever channel, if there's isn't one spare you can use a servo y-cord.
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Old Feb 11, 2010, 12:04 PM
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Chattanooga, Tennessee, United States
Joined May 2003
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Here is a photo of a mock-up to show the connections required. Whatever you are using for battery connectors (Deans?) you will need a matching connector on the UBEC, and also matching connectors from the battery Y-lead to the ESC.
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Last edited by Dr Kiwi; Feb 11, 2010 at 12:13 PM.
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Old Feb 11, 2010, 01:18 PM
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USA, AZ, Gilbert
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I plug my BEC into my balance tap most - and + wires.

Rick
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Old Feb 12, 2010, 01:44 AM
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What is the difference between a jst female and a jst male?
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Old Feb 12, 2010, 01:55 AM
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Quote:
Originally Posted by chewchun View Post
What is the difference between a jst female and a jst male?
Other than the fact that they are 2 different plug types?

MALE JST (goes on your battery):



FEMALE JST (goes on your ESC/BEC):

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Old Feb 12, 2010, 02:03 AM
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Can anyone take a look at the website and posted.
And help me confirm if i can buy this:
http://shop.rotor.com.sg/show-detail.asp?prodid={C6CD25E0-085C-4C1C-AF05-6F493C6CA850}&pn=2
To connect my Ubec and battery.
I dont need speed controller..
(Connect the red on the Ubec to the white on the battery)
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Old Feb 12, 2010, 02:23 AM
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No, go with this:

http://shop.rotor.com.sg/show-detail.asp?prodid={713DF8B3-501C-4AD7-A590-77E5D9ECB94E}&pn=1

Solder it directly onto the main battery lead, and save yourself the hassles of having to use the balanc lead
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Old Feb 12, 2010, 06:36 PM
Jack
USA, ME, Ellsworth
Joined May 2008
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This post has photos of two adapters you can make to let you quickly add or remove a UBEC from any system:

http://www.rcgroups.com/forums/showp...86&postcount=9

Jack
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Old Feb 13, 2010, 02:07 AM
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Quote:
Originally Posted by Xpress.. View Post
No, go with this:

http://shop.rotor.com.sg/show-detail.asp?prodid={713DF8B3-501C-4AD7-A590-77E5D9ECB94E}&pn=1

Solder it directly onto the main battery lead, and save yourself the hassles of having to use the balanc lead
Does it mean i just solder the male jst onto the wire of the battery?
It means my battery have two plug?(The white one for my charger and the male jst for my UBEC)
I do not have to remove the white plug right?
Can i choose to buy this too?http://www.mockingbirdrc.com/product...6298dqrp2afkd2
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Old Feb 13, 2010, 09:31 AM
Jack
USA, ME, Ellsworth
Joined May 2008
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"..Does it mean i just solder the male jst onto the wire of the battery?..."

The gender on the red JST connectors is a little confusing. The red connector that is on the UBEC is usually called the "female JST" but it is actually a male connector. If you look into the housing you will see two metal male pins. The "male JST" connector that plugs into the housing is actually a male plug housing a pair of female sockets that
receive the two pins.

This wiring diagram shows the wiring you want to have:

http://www.castlecreations.com/produ...ec_wiring.html

That shows Dean's Ultra connectors instead of the JST and the BEC is permanently attached to the ESC.

If you solder the "JST male" connector from Mocking Bird to the connector that is on your ESC (matching the red and black wires) and then plug your UBEC into that, when you plug and unplug the ESC you are also plugging and unplugging the UBEC.

The only difference is that you have one more pair of connectors involved because you used the red JST male and female to attach the UBEC. If you wanted you could cut the JST female off of your UBEC and solder it directly to the ESC's battery connector.

it makes the most sense to solder the UBEC to the ESC leads because that way unplugging the ESC also turns the UBEC off. No switches are needed.

"..It means my battery have two plug?(The white one for my charger and the male jst for my UBEC)..."

You battery will have the white balance/charging connector and a connector for the ESC. The UBEC connector should be attached to the ESC side, not the battery side.

"..I do not have to remove the white plug right?'..."

No.

"..Can i choose to buy this too?http://www.mockingbirdrc.com/product...6298dqrp2afkd..."

Yes, but attach it to the ESC and then plug the UBEC into it, do not attach that to the battery.

Jack
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Old Feb 13, 2010, 10:25 AM
just look at it smokin'
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Joined Dec 2005
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Quote:
Originally Posted by chewchun View Post
What is the difference between a jst female and a jst male?
there are some differences between a MALE and a FEMALE

in this case, they are the inverse opposite pair of each other, so you can plug them together

interesting fact that according to these relations a deans micro is a Hermaphrodite
Z
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Old Feb 16, 2010, 07:13 AM
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Joined Dec 2009
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Quote:
Originally Posted by jackerbes View Post
"..Does it mean i just solder the male jst onto the wire of the battery?..."

The gender on the red JST connectors is a little confusing. The red connector that is on the UBEC is usually called the "female JST" but it is actually a male connector. If you look into the housing you will see two metal male pins. The "male JST" connector that plugs into the housing is actually a male plug housing a pair of female sockets that
receive the two pins.

This wiring diagram shows the wiring you want to have:

http://www.castlecreations.com/produ...ec_wiring.html

That shows Dean's Ultra connectors instead of the JST and the BEC is permanently attached to the ESC.

If you solder the "JST male" connector from Mocking Bird to the connector that is on your ESC (matching the red and black wires) and then plug your UBEC into that, when you plug and unplug the ESC you are also plugging and unplugging the UBEC.

The only difference is that you have one more pair of connectors involved because you used the red JST male and female to attach the UBEC. If you wanted you could cut the JST female off of your UBEC and solder it directly to the ESC's battery connector.

it makes the most sense to solder the UBEC to the ESC leads because that way unplugging the ESC also turns the UBEC off. No switches are needed.

"..It means my battery have two plug?(The white one for my charger and the male jst for my UBEC)..."

You battery will have the white balance/charging connector and a connector for the ESC. The UBEC connector should be attached to the ESC side, not the battery side.

"..I do not have to remove the white plug right?'..."

No.

"..Can i choose to buy this too?http://www.mockingbirdrc.com/product...6298dqrp2afkd..."

Yes, but attach it to the ESC and then plug the UBEC into it, do not attach that to the battery.

Jack
The problem is,i don't use ESC?
Is there any problem if i buy the "JST male" connector from Mocking bird and solder it to the battery instead of the ESC(Which i dont have and i don't need).
Is it dangerous or what?
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