LiPo in Series?
 

Hello all im really struggling iv built a mini quad that i run on 2x6S lipos but i was wondering if there is a wiring harness to run 4 LiPo packs in series instead of two? Is it even possible?


Preferably i want to run 4x5S packs that would be great but ive searched high and low how to connect 4 in series lol


could i run two power and earth wires from the battery point and just have two connectors and plug 2X5S into both? Or will it cause issues when the possitive and minus both meet each other at the end?

thanks for any help

for example two battery wires 2red 2black one going to 10S (2x5S) and the other going to 10S(2x5S) but both join into the same fitting for the motor? Will they go bang doing this?

sorry for all the edits im really stuck with this as i cant find 10S lipos and a 10S lipo charger for fair money …

You can hook batteries up in series or parallel, but both require some knowledge of basic electronics to do properly and safely. There's still lots of myths around, even by some "reputable" companies that, instead of really educating people about the risks and proper procedures, just condemn things like this as generally "dangerous" and tell people not to do it at all instead. Liability worries, I guess, but not factually correct. So if done properly, there's no problem whatsoever, but if done wrong, things can go as wrong in series as in parallel. So, be sure you know what you do before playing around with either.

ok so do you know how to make a wiring harness for 4 lipo packs?

Definitely start with learning the absolute basics like what series and parallel mean.

Series means the batteries are connected negative to positive etc.

Therefore you have the negative lead from the speed controller connected to a negative terminal on a battery connector. Then the positive terminal on that battery connector is connected to the negative terminal on the next battery connector. Rinse and repeat until you get the number of batteries you want in series then connect the positive terminal of the last battery connector to the speed controller.

But please learn the basics because connecting batteries in series adds their voltage so 4 5s batteries in series will be 74V. Make sure your speed controller is rated for the voltage you will be using.

What you described about running two power and earth leads with 2 5s batteries on each would be 2 parrallel groups of two series connected batteries so it would be ~36 volts but twice the mah rating of the full series setup.

hi im quite good with lipos i have made 48v 13S packs this one is for a mini quad im intentionally trying to hit 72v bud.

i just want to beable to join 4 lipo packs together buying single cells and building isnt cost effective anymore..

Just solder 4x plugs in series, plenty of guys run MGM systems with 3x 5S in series, one extra connection won't hurt will it??

What ESC are you running btw? have you heard of Flier ESC's? some of them have 4x power wires (2 pos, 2 neg) for up to 22S, like this one Flier 22S ESC
This configuration will allow you to run 2x5S in series off one pair, and 2x5S in series off the other pair. Then again, a 5S and 6S in series off each pair for 22S lol
Of course the lipos need to be exactly the same (brand, mah, C rating) just different cell counts

Another option is to run 3x Turnigy HD 7S packs in series, and a good charger for them is the SkyRC D400 2x200W 7S charger, it's cheap enough

Sorry but your initial question and suggestion of how you could hook the batteries up shows that you don't understand how parallel and serial connection works. I don't doubt that you were able to solder together a bunch of individual cells but that only shows that you were able to do the what but not that you understand the how or the why.

Please don't take offense, but I have to agree with Joshstix. From what has been posted so far, I don't quite get the feeling that you really understand the principles well enough for me to feel comfortable about going deeper into the matter. I know the internet is full of people who are always more than ready to risk other people's money, health (or even life) with their glorious advice, but I am too careful a person to do that. Stay safe!

Yeah have to agree with that 100%

4x5S would yield 84V. That's quite a bit more than 72V.

op does not understand addition either .lol.

Can i link the packs together using 3 of the triangle series joiners?
im sorry to sound so vague im just a bit lost on the wiring them up im 10000% sure of the difference between series and parallel
series adding the voltage parallel adding capacity and amps i just thought it would be more simpler to get a reply

im running a kunray 3000W 72V system put onto a mini moto quad

i cant add links or photos

hi its on a quad mate a kunray 3000w 72v kit
im running 4x4S well will be… can i use 3 of the series wire joiners to link these packs up?

I gave a specific answer of how to hook up your batteries in series in the fourth post of this thread.

Honestly if that answer is not explicit enough for you to be able to understand what needs to be done I think you should go to someone with electronics experience and have them do this for you.

I am not trying to attack you here but I have concern for your safety.