Build your own A123 RC receiver pack

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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:
www.rcmodelreviews.com/forum/v...
Here are the sources of the materials used in this video:
A123 cells (wait on the page for the best price pop-up):
www.hobbyking.com/hobbyking/st...
Heat-shrink (large and small):
www.radicalrc.com/category/Hea...
Balance leads:
www.rctimer.com/index.php?gOo=...
or www.himodel.com

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30 дек 2010

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Комментарии : 224

@dadbrad852 9 лет назад

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.

@BWACProductions 13 лет назад

Finally, someone that knows there is an 'L' in solder. it is NOT silent America!!!!

@johncgibson4720 7 лет назад

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.

@worldsails2000 13 лет назад

I always like watching videos on making battery packs! A123 packs are great, very durable. I lost a 3s pack while carrying my packs in to the house one Fall. It fell under a bush. I didn't find it again until the following Spring and it still worked great even after being out in the rain for 7 months.

@alistairsutherland3006 10 лет назад

Used your instructions and batteries work perfectly, thanks Bruce!

@tswitz65 13 лет назад

Great job as always Bruce. Thanks for sharing your expertise with us all!

@JohnnyTheWrench 12 лет назад

Oh and by the way, it really doesnt matter how you pronounce solder, as an American, I'm used to hearing things pronounced differently even by people in my own country. I do enjoy hearing people from other countries with different accents speak. Again, I enjoy watching and learning alot from your videos very much. As someone who's mechanicaly inclined but new to the RC world, it's very good to have someone knowledgable such as yourself helping out. Thank you sir!

@deanstorey1296 9 лет назад

Good tips down to earth advice made soldering easier for me thank you

@77.88. 9 лет назад

Thanks for your super professional video, I know little about battery packs and followed along easily.

@kennethalderslade8541 4 года назад

Certainly a welcome video, just browsing thro' various sites looking for receiver packs, this A123 fits my bill, many thanks will get on and do it.

@snaprollinpitts 6 лет назад

I didn't know about those cells, thanks Bruce!!!

@meakins355 11 лет назад

Thanks for the video Bruce!, I just made a 1100mAh Ignition and a 2300mAh rx pack. I'm really starting to embrace the DIY aspect of this hobby. Also when with some FrSky gear based off your reviews, cheers.

@AdrianoCasemiro 5 лет назад

And that's how I'll do in my next model. Only I'll be using a couple of 18650 batteries to power rx and vtx. What a masterclass!

@davidfleming6605 4 года назад

Learn something new from you everytime . You're the best.

@fsa0033 10 лет назад

Really appreciate this channel. I've learned quite a lot here. This episode was serendipitous because I just finished a glow project and have additional A123's from my Surefire rifle lights. Thanks. Keep producing these great videos.

@Metal-Possum 10 лет назад

Your accent is pleasantly familiar. Great video, happened to stumble across it wondering what to do for a light-weight receiver battery for a 2ch glider project I have planned. Well done on the so(l)dering joke!

@MrJr298 12 лет назад

Great job.I've been thinking of making one of this packs my self and you video will make it easier.

@luishuerta5063 9 лет назад

very nice I will be doing this for a DLG I am working on thank you for the idea keep up the great work!

@Brobolio 13 лет назад

Reeeally good tutorial!!! Keep doing such a great work. Happy new year Bruce!!

@antaresd1 4 года назад

Thank you very much for your videos, keep them up!

@NormanLedoyen 10 лет назад

Very interesting and very informative to a old dog like me. Thanks again.

@jeffie8696 13 лет назад

Now I feel the need to make some of these and install them in all my models. LOL. Good stuff Bruce.

@flexk9996 9 лет назад

Great video, thank you for posting this.

@DaveStroble 5 лет назад

Great video...thank-you for the information...love your videos!

@glenncol 13 лет назад

Man fantastic video, i look forward too anything else you do

@qfdforme 11 лет назад

Great video. I made a 2S SP receiver pack with the help of the vide using Black and Decker A123 1100 mah cells. Hobbyking had the balance leads and heat shrink. Thanks.

@mattywol 11 лет назад

I have never watched a video on batteries for half an hour, that's full credit to you matey you'd make a pencil sound interesting

@fgdfhtrhg 10 лет назад

Wow nice soldering technique, i don't have clamps so very useful for me.

@TripleXmodder 11 лет назад

So many comments asking where to get those A123 cells. Good to see who actually watched the video because Bruce said where he got his :) great video, i just subscribed.

@MIdaffy502 10 лет назад

Good inforrmative video. Note: the batteries you used have a indentation ring around the postiive end of the battery, so if the yellow plastic wrap would to come off, the positive end is easily identified by the indentation ring .

@woodrunner51 3 года назад

just dropping by on an ancient video... :)

@shakeythumbs 13 лет назад

nice vid ,you present very well

@rpotech 10 лет назад

Good video very informative, thanks for taking the time

@court7803 7 лет назад

how cool is that..... will be making one of these

@dwaynepowelldp 11 лет назад

That video was verry pleasant, I have enjoyed and learn a lot, I'm a new comer to the work of rc; and I'm in the process of making my very first rc plane. I am in Jamaica so I can't get a lot of the things to buy to videos like your is what I have to try and go by.

@SuperHIvolt 13 лет назад

Bruce, Your English is fine. Keep up the good work..

@andre_pikes 3 года назад

10 years and still relevant

@jackisthebombdrummer 11 лет назад

nice work bruce

@plewisto 6 лет назад

Awesome video as usual.

@Lithoushine 13 лет назад

best part 0:00 - 23:39 awesome vid loved every second!

@startazz 13 лет назад

Great job Bruce and we could use more video's like this mate (how to video's) always good in my book mate as we can always learn more things like this in our great hobby ;-) thumbs up.

@AidanGieg 11 лет назад

Great video! I'm going to make a 2S2P battery to power lights on my bike and they'll be charged by a small alternator connected to a bride rectifier and 5 volts regulator with a resistor.

@lutadavid4509 10 лет назад

great work i real learn a lot thanks for you video

@JustForFunRC 7 лет назад

Thanks Mr. Bruce!! We NoObs would be lost without you! haha

@zyoungson215 13 лет назад

yet another brilliant video

@Hunt1Shunt 10 лет назад

As usual informative video. Soldering:- Wires that go together should be twisted together then soldered. Tabs with holes should have the wires going through the holes then solder the connection. e.g. mechanical connection first then electrical connection with solder last.

@phantomscaler 10 лет назад

awesome Bruce thanks for posting

@vanepico 13 лет назад

Solder wick is brilliant for linking cells together, save wasting wire

@bboyserga 13 лет назад

excellent video!!!

@lioneljeyaraj8508 8 лет назад

thanks sir, it helps a lot.

@geraldogalliani2474 9 лет назад

Great video buddy, Thanks. Can you tell what gauge wire you used? I usually use 22 AWG but the one you used looks a bit thicker.

@callmejerm 10 лет назад

Haha "Because you don't pronounce the L, why don't you pronounce the L?" that gave me a good chuckle

@callmejerm 10 лет назад

***** I'm from America, but I really care about my spelling, grammar, and pronunciation, if I misspell a word I feel that much dumber. So yeah, I'm from a state where they believe Y'all is a word when the correct form would be you guys I don't think you all is proper.

@johnrobertson7583 9 лет назад

Yeah really, we pronounce the L in soldier, but leave out the i, and it becomes a different word. Also, y'all, you all, and all y'all refer to different sized groups. All 3 of those terms are important to us all.

@maximummarklee 9 лет назад

Jeremiah Hill How about you take that topic to another channel where anal retentive-types live.

@johnrobertson7583 9 лет назад

Mark Lee His first comment was comedic, his second was a little bit self-depracating. Dont be a #%^}. Good holidays to you.

@MrTommyj200sx 7 лет назад

so how now you have to strip it to charge yhe batts when its flat? how can you charge it without taking it apart.

@gustavotogeirodealckmin4269 9 лет назад

Could you make a review about the li ion 18650? Cheers

@dajatu 10 лет назад

Absolutely one great teacher. You are very well spoken in the Queens English and I love the clarity with which you give these videos. I've made packs and am amazed at how quickly you melt your solder with your iron. I never see you clean it, must clean mine after each wire. I will use more of the solder as I see how it makes much of a difference in the way that you use it. Question, If you are using digital servos how does the voltage on this pack not burn them out? Thank You very much.

@librafire12345 9 лет назад

interesting look forward for tips

@prillerman 10 лет назад

Great tutorial

@hyzenthlay7151 11 лет назад

At a push you can make your own balancing lead from the same 3 pin male conector you use for the discharge cable, using all 3 wires it comes with (in the case of 2 cell). Just remember which way the negative wire goes in your charger. If you need 4 pins (for a 3 cell battery), then you can use the motherboard USB or internal speaker connector from a computer case.

@robcrawford9657 9 лет назад

great vid thankyou, is it possibe to incorporate the power lead and balance lead as one?

@Hewey19 13 лет назад

Shoe Goo is the best thing to use when gluing the cells together.

@micromachine7954 8 лет назад

Another excellent video from Rc Model Reviews! So are these a123 batteries the same as18650 cells?

@Gardol2 8 лет назад

thanks for the great tip!

@TheAndersen75 10 лет назад

I have a question, your saying, be sure to buy A123 and not LifePO4.? Sorry for the noob question cause the link to Hobbyking is invalid so isent it the same.? I see ALOT of A123 as LiFePO4, and none of the "Genuine" once that you mention, Do you have a fresh link.?

@xlovegroovex 13 лет назад

There's a phrase that I like to use when soldering. "The bigger the blob, the better the job" :D

@fly9wheel 2 года назад

Not true !

@5x9dev 11 лет назад

Excellent video Bruce! Ran across your video while researching how to build some A123 battery packs for amateur radio use. Any tips for making larger battery packs like a 4S4P? I've heard of people using a polyswitch to prevent internal shorts. Any ideas about that or how the balancer comes into play during charging? Much appreciated!

@SJSOmar 6 лет назад

Well this helped me now to create a battery for my UJ376 heli using some new batteries from a laptop to create this because my current battery just died and it won’t charge up it only powers the led lights on it

@stevensayes4509 9 лет назад

Good video

@silverssonyoutube8438 11 лет назад

where did you get those long a123 cells?

@igorgoga 11 лет назад

Hi Bruce, Would you still need a UBEC or do you plug the pack directly into the receiver, and why would you need a UBEC in separate battery for rx scenario? many thanks!

@johnrobertson7583 9 лет назад

Hey nice instructional vid. One thought however. Have you ever played around with post-processing your longer episodes to speed up through the repetitive and tedious tasks like opening multiple packages and walking to and fro a launch site? Hows the "free channel cluster antenna testing array" coming for installation at flying fields? Lol

@drpeemac 10 лет назад

Excellent !

@How-To-RC 3 года назад

Keeps all the hippies happy 🤣🤣🤣

@gregorpipan123 13 лет назад

nice and educational

@000006rapture 13 лет назад

i am very interested in the DIY transmitter project. When will you be making videos.

@memoriesbygmc2254 7 лет назад

I just got my order of a123 batteries. How did you charge these batteries be for you made the battery pack? I only have a 1-4 or 8 - 2.4 battery charger. Thanks, Gene

@PyroChimp75 11 лет назад

Off topic: that pulse jet engine in the background is still bad ass! lol

@hyzenthlay7151 11 лет назад

Also, balance leads on A123 or other LiFePO4 batteries is a little "redundant" as they tend to stay at a very small voltage margin until they are discharged. Balancing bases itself on there being an equal voltage between the cells, not amperage. If the voltage is the same at 50% capacity as it is at 100% capacity for example, then what is there to balance?

@AbdulAskewSR 12 лет назад

Can the Trustfire A123 cells used in the battery mod for the Turnigy 9X be used to power a tell (Trex 450) if wired correctly? I have a bunch coming in the mail and wanted to know if I could make a flight pack(s) out of some. Thanks. BTW, I love your vids they are very informative.

@johnathonrendon8394 11 лет назад

I wish I had all of that stuff

@funfreq9282 3 года назад

I want to use a pair of these for the Sullivan onboard glow igniter (twin cylinder) that I'm going to use. If I build them in Parallel do I still need to use a balance plug?

@RoboTekno 9 лет назад

Don't mind me. Just watching old videos :-)

@SusanFlowers_ 6 лет назад

Great Video! Ques: For a Plantronics CT14 cordless phone Rechargeable Nickel Battery 81087 2.4V with three wires r/w/black. They're tiny wires. The white one came out of the little clip. I want to solder it in place as it will not stay in. Do you have any demonstrations for making these small batteries? The space for some of these is always minimal. Thank you.

@kamu38 13 лет назад

@RCModelReviews are these batteries charged through the balance leads or through the servo/reciever style plug?

@slicedbanana1846 9 лет назад

Quick question. How can I connect my little solar panel (gives 3v) and 2 cooling fans (takes 7,2v each) to my receiver batt input so that the fans are always on when power is on from esc and that the solarpanel gives also power together with the receiver?

@jayc004 13 лет назад

Hi Bruce. I know this is going to be a stupid question, but If you put 2 of these A123 batteries together you will end up with a pack that is 6.6V. Now, I know that the FR Sky RX that both you and I use can accept this, (4v-7v), but if I put it into a Park Flier and have a separate LiPo running just the motor, is the speed controller or RX going to reduce the output voltage down to 4.8V for the servos?

@capjlp 13 лет назад

Hi Bruce. Your vids are great. And yes I say sorder :). Where did you get that heat shrink. I got some from hobby king but it doesn't shrink that well.

@dana041 10 лет назад

hi I love your video, could you do one for a dji phantom 1 quadcopter

@jeffs7915 Год назад

You might test it before you added the big piece of heat shrink, if a problem exists you have to cut off the heat shrink, just an idea.

@richardlong3615 5 лет назад

Hi Bruce - are the 18650 batteries the same as the a123?

@jackmoreland573 9 лет назад

I have a set up that recommends 800mah the a 123 batterys r higher than that how do u reduce the mah if u cant what effect will that have on the system love your shows very informative thanks

@Slugsie1 9 лет назад

jack moreland You can't reduce the mah, but it won't hurt. Higher mah just means that the battery will last longer. There is a potential weight penalty however (higher capacity mah batteries are typically a bit heavier), so bear that in mind if weight is a concern.

@RafaelKlaatu 9 лет назад

if my math is right this pack has nominal 6.6v charge and 7.2v fully charge...so,,could it replace 4 AAA nimh batteries in a hubsan X4 transmitter?

@pushinold 13 лет назад

have you looked at the A123 pack that I sent you? I purchased two A123 batteries with tabs welded between the two for about $5 for BOTH BATTERIES! I have had great service out of these batteries, but I am waiting to see what you think about them. Thanks, Bryan

@raptorpome2577 4 года назад

Hello Bruce Is this still the go to battery nearly 10 years on ? .... and can you please check and up date the links you very kindly added to this youtube video. i am getting back into the hobby after about 10 to 15 years of not flying i have a lot to learn Bruce all the best from Ian in England

@timothyjones7280 2 года назад

Where do I buy a123 life batterys now with the solder tabs because HobbyKing no longer sells them?

@chrisreese2965 3 года назад

So if my servos are rated for 6v, wouldn't that be to much voltage? Also how do you charge them? Do you charge them as a ni cd, ni MH?

@Canoneosmiami 12 лет назад

Bruce , would you please let us know where is the best place to get real A123 batteries , possibly with the taps connected together in diffrent combination if you choose to ? someone asked you if those a123 he bought for 5$ -2pcs are real -were they , and if so , please where to get them ?

@JohnnyTheWrench 12 лет назад

Bruce you're awesome! I've actually taken to pronouncing the "L" because it sounds a bit better or betta depending on where you're from. Ha Ha Seriously, sodder doesn't sound very good does it? I appreciate you taking everyone's views to heart and I love your videos! Now tell me my friend, is it possible to attach a balance lead to rechargeable Ni Cd AA battrees? I have recently purchased a TH9X and would like to balance charge the battrees in the holder that comes with the unit.

@PURPLEHONDACBR1000RR 10 лет назад

GREAT VIDEO! QUESTION.& STATEMENT....I HATE LI-PO'S!..I need to build a battery with specs of 1500mah and @ 7.4v.. what do you suggest? It is going into a MJX-45 heli using a brushless main motor with a APPROX RATING of 2650kv Your help would greatly appreciated. THANK YOU.

@sarsar1371999 11 лет назад

Are the cells basically batteries with tabs attached?

@richardsmith5689 6 лет назад

hobby king dont sale these anymore, where do you get them now. the link you provided go to the lifepo4 battery you say dont use.

@philipschultz 10 лет назад

Hi i have a 2.4 ghz amplifier and i need to power it off a battery the power supply i got it with is 5v at 2000mah/ 2a could i do the same as what you have done on your vid