Thread Tools
Dec 26, 2010, 08:49 PM
RC Paraglider / Sailplanes
Charlescd's Avatar

Can i use a seperate battery and bec even if i'm using the bec from the esc?

I've been wondering about this for a while. If i want to power my servos on a separate battery using an exterior bec, do i have to somehow deactivate the bec on the esc? And how do you deactivate the bec if need be?

Sign up now
to remove ads between posts
Dec 26, 2010, 09:45 PM
3D Crazy
Meez's Avatar
Just disconnect the red wire of ESC to receiver.
Dec 27, 2010, 02:56 AM
Registered User
As Meez says, just disconnect the red wire from the ESC to the receiver. This is usually done by prising up the tab in the plug so that you can pull the red wire's pin out of the plug, and then just tape it back on itself so that it doesn't touch anything.

But there's no need to use a separate battery. The main idea of a stand-alone BEC is to use the main motor battery to provide power to it. The only reason I can think of for not doing this is if the main battery is more volts than your BEC can handle.
Dec 27, 2010, 08:20 AM
RC Paraglider / Sailplanes
Charlescd's Avatar
My next model will weigh in at 11 pounds. I've had an esc fry in flight and i lost control of the model. It was a foamy and crashed in the middle of the field.

I have a good quality esc with an internal bec and wanted to use it on the model, but at 11 pounds, i want a separate battery. I did not know you could deactivate the bec - i am one happy camper.
Dec 27, 2010, 02:32 PM
Suspended Account
All of my ESCs that have a BEC also have a clipped red wire.

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Whoops! I'd laugh, but I'm so afraid of her I can't even smile :| AndreyT Life, The Universe, and Politics 261 Nov 30, 2010 11:41 AM
Help! Should I use a Seperate Receiver Pack or use the BEC from the Speed Controller?? tyrolean_marcus Electric Sailplanes 35 Nov 28, 2010 07:45 PM
Discussion I'd laugh, but I'm so afraid of him I can't even smile :| Arbo Life, The Universe, and Politics 23 Nov 27, 2010 09:16 AM
Question Circuit to protect the Rec. & ESC when a seperate BEC or UBEC decide to full voltage cyclops2 DIY Electronics 24 Nov 24, 2010 08:01 AM
Help Needed: Can I plug-in a receiver battery while using a ESC with a BEC? CheeseWing Parkflyers 3 Sep 26, 2003 07:22 PM