Build your own A123 RC receiver pack





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Published on Dec 31, 2010

This video shows you how to build a 2-cell A123 receiver pack for your RC model airplanes.

A123 batteries are the very best option for modern 2.4GHz RC systems because they provide plenty of voltage headroom and astonishing current-handling capabilities. They're also far safer than lipos, have no "memory" and won't be destroyed if you accidentally run them completely flat.

Using this video as a guide, you can build your own super-good A123 receiver pack for around US$20.

I use these 1100mAH packs in my glow-powered models up to 1.20 cubic inches (20cc) and also any gliders larger than a DLG.

For bigger IC models, you can use the 2300mAH A123 cells and the same techniques. A 2S 2300mAH A123 pack can be used in planes as large as a 55cc gaser with two 2300mAH packs (fed through two switch harnesses) capable of powering even a 40% model.

You can discuss this project in the comments on this video or in the RCModelReviews forums at:


Here are the sources of the materials used in this video:

A123 cells (wait on the page for the best price pop-up):

Heat-shrink (large and small):

Balance leads:

or http://www.himodel.com

Comments • 191

Jeremiah Hill
Haha "Because you don't pronounce the L, why don't you pronounce the L?" that gave me a good chuckle
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Cesar Siller Jr
I live in the states and I do pronounce the L in soldering.
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Gustavo Togeiro de Alckmin
Could you make a review about the li ion 18650? Cheers
Mike Lange
In America we can't pronounce the L in soldering iron. We've tried but our tongues swell up and we can't breathe.  
Dad Brad
Just thought I would say thank you for all the enjoyable videos over the years.   I didn't realize until now just how many smiles I have derived from what you do.   Thank you kind sir, Please keep doing what you are doing. 
Dean Storey
Good tips down to earth advice made soldering easier for me thank you
jhayr soriano
how can u charge that battery pack and what kind of ballance charger..can u post a video tnx..
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Graham Bate
fully charged they be 8.4v? bit high don't u think? great video.
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John C Gibson
I had always tried to avoid your video because I didn't want to get confused with different pronunciations , until I found a video of a linguistics professor who explains how Michigan changed A to E. Now I can watch your video in peace, knowing the quirks.
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G Man
Cell balancing is not needed for these LiFePo4 cells, especially top balancing.
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