Connecting batteries in series or parallel (LIPO)

UPDATED BETTER VERSION HERE - • Easy Connecting of LIP...
Note. I mispoke in one place in the video. 2000mA equals 2 amps.
You can also check out lots of other R/C basics explained simple in these series: • Electronic Basics for ... and • Common Radio Control Q...
Thank you for taking the time to watch the video. You can find me on social media at / painless360 and / painless360
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LIKE and SUBSCRIBE and above all - Happy Flying!

[@Painless360]

If you are still confused after watching this old video then the later version is easier to follow and answers many of the common questions from this video - kzbin.info/www/bejne/lZquq4N3p9Sigq8

[@samparsons4385]

So do you just leave the charging cord alone and it doesn’t need to plug into anything when running your rc like will it still work in water?

[@mathiaskash1458]

Instablaster.

[@fatbackmiddlebrooks3122]

Mine holds 2 LiPO batteries okay and it dies after being played with but one of the batteries is less powered than the other one when I'm showing 8.4 volts the other one still showing 11 volts what's going on

[@silentperformance]

Thank you! With watching this video and your 101, I now understand LiPo batteries. I have been a Nitro/Gas guy for a while and have fallen behind on the technology of electrics.

[@jwa6789]

That actually cleared a lot up I'm a vapor and all the vapor vids confused me but this made it all clear thank you

[@groverscorner2364]

Awesome 9 years later and your video/content/information is still relevant!

[@rossdejager2577]

Very good explanation. It might just be also worth mentioning in this video that if you connect the two batteries in parallel the storage capacity in mAh doubles to 4000 mAh, and when connected in series, it stays the same at 2000 mAh.

[@savekillqqpsounds8473]

Ooooooo thank you man!

[@richh8860]

Thanks for taking the time to impart your knowledge to everyone ,nice little tutorial 👍

[@joselopez-kj1ox]

thank you so much I've been looking for a video to explain serie parallel for days I really appreciate your video

[@ianyboo]

As usual your videos give me the exact information I needed plus a couple new nuggets! Thank you so much!

[@adamkeen7042]

Thank you! This made it so much easier to get my head around, great work

[@boy6named6zoen6]

Thanks for explaining the difference to me. I always mix the 2 up for some reason. Had the correct cable to make a 12s out of 2 6s lipo batteries but thought i connect them in parallel instead of series. And hats of for you you are a very patience man with all the questions you get. It's like people can't think for themselves and are looking for a quick and easy answer instead of looking it up themselves on forums or use there brains. I know i went looking for a answer myself but this was a pretty simple one. I see a lot of people in the comments here asking the same question over and over again. I don't have a problem with explaining something to new people in the hobby but i give up on them if they keep coming with the same every time.Do your research self it gives you a much better feeling if you solve the problem yourself with research on forums by digging trough the site.

[@Painless360]

Thanks for posting that. I agree too many want the 'quick fix' rather than think the problem through and use the resources available and gain a better understanding of what they are looking at. I try and teach the person to fish, not give them one so they can help themselves next time they are stuck ;) Happy flying!

[@jonathanflores3748]

Great explanation! Everything was clear right to the point!!

[@traplover7341]

Amazing explanation! Thanks so much! My project can start today because of you :).

[@bobot021070]

now that is a CLEAR heck of explanation!!! AS CHRYSTAL CLEAR. THANKS MAN ITS VERY KIND OF U!!

[@DJDevine]

Perfect thank you, I am looking at two extra 2s lipos 1200 mah 30c and we all love as many extras as we can get it will be a 4s for my quad, this is perfect thank you.

[@ranjeetsingh-ze8sc]

I m thankful to you I want to calculate battery bank for my solar plant Your video give me whole solution of my problem Now I can design my battery bank as my need Thanks again

[@TBD_Teebs]

Thanks for this little video! Just needed a quick refresher as to what connectors I had as I haven't driven/worked with my RC Buggy for a while. Just one thing I would mention, with the theory you've given, is parallel basically gives an RC model a longer flight/run time, but the same power. With series as I run in my buggy with 2 2s lipos, it gives it a slightly longer run time but also doubles the power that the buggy can draw. So since my setup can handle a 4s lipo, basically doubles the max speed my buggy can get to :)

[@Painless360]

+TBD_TheBlackDog as you increase the voltage by connecting your batteries in series it does mean that the motor needs to pull slightly less current to get the same wattage. This will have the effect of giving you a slightly longer run time as well. Same effect as replacing the 3s with the 4S pack in a model

[@RCManiacs]

Awesome video! Just made a serial connector with the help of this. Thanks!

[@shannonarmstrong3475]

Thanks,most informative. After joining the batteries (Parallel) can you charge them as a single entity?

[@daviddrysdale8866]

Thanks so much for all your help - very much appreciated !

[@skygirl341]

Thank you this was very informative I have a bike I’ve been building the last couple months and I have to hover board batteries both 37 V and 20 A and I’ve been trying to figure out if I can connect both positives and negative’s together and then charge both of them together as well as discharge as they don’t have a second set of connectors but really just a positive and a negative

[@polarpl247]

If you do that, you will fry your batteries

[@EstebanRiveraCinematographer]

9 years after, still being so helpful 🙏

[@pauljenkins6807]

Thank you, this solved a problem for me. I'm installing an e flite 360 onto a hanger 9 xcub 60cc. I'm using a a castle 160 amp esc and a bec. I want to run 12s and didn't know how to rig up the batteries. You explained how to solve my issue, great video

[@rcpete7055]

Thanks for making that.. makes it clearer to understand..

[@michaelwboggs]

Great video. I found it curious that you made a BMX reference (we're very into BMX racing). On another note, if you connect two batteries in parallel (as in your example), does that mean that you're doubling the capacity while keeping the overall voltage the same? Thanks

[@Painless360]

+Michael Boggs parrallel equalls the same voltage but higher capacity = longer flight time. Happy flying!

[@eddxx8729]

This is very helpful!! Thanks for making this video!!

[@faboxbkn]

thank you very much, simple and straightforward!

[@steviesblues7959]

Great video could you recommend some batteries to run in series to make up a 52volt 14/16 amp battery for my ebike build any info much appreciated.

[@hiker6798]

Another clear video - nice work! Thanks

[@SamuelShezzer]

Thanks a lot man, made this really clear! 👌

[@Jacey2001]

Thanks. I needed a refresher.

[@ThingyMcThingson]

Thanks for the video, brilliantly clear demonstration of the difference. I was wondering, are there any safety issues with connecting LiPo batteries in parallel? I am currently considering connecting two 8Ah 14.8v batteries to get 16Ah unit but I've read conflicting views all over the internet about the safety, especially when it comes to charging the unit. Sorry for the long question! But thank you in advance.

[@Painless360]

The main thing to be aware of is to make sure that the voltages of the cells in each pack are as close as you can. When you connect two packs together the difference in voltage will drive a current equal to the difference in voltage divided by the resistance of the cells/wire connections. As the resistance is very low this could be a large surge! Hope this makes sense. Happy flying!

[@BrothrBob]

That was very very helpful video, I enjoyed that.

[@rodneyswinson]

Thank you for sharing this valuable video

[@BIGGBULLxxx]

Thanks for the video mate. I have a 5th scale vehicle coming from china it's the fid Dragon hammer voltz it's brushless, and I need to know what will be some good connectors to solder to the wires . The motor will be running g off of two 4s 16,000mah 25c lipo battery packs. The esc is the ztw 300a beast pro.

[@yourstruly9340]

2nd question. Is there any negative effect on serializing a 4s with a 5s of same caliber ??

[@leonardocamara684]

awsome video! great work bro!

[@kandscustoms1122]

Best explanation out there, and the visuals as well every one else is cramming numbers at ya and it makes no sense to me any way….!!! 🤘😎🤘

[@AzRavnGrl]

If you kept clips on your cables, could you switch configurations back & forth (parallel to series to parallel) depending on your needs? Assuming one's solar power & inverter --if used-- would be adequate either way, would switching like this cause any damage to anything? Just curious...Thank you.

[@PKLambooy]

This was a great video. Is there a source of info to find out about individual battery pack configurations? For example, I have a laptop battery HSTNN-YB02, 8 cell, 14.8 volts.....I've taken it apart and it looks like I have two sets of 4 batteries. Each set of 4 has 2 batteries connected in parallel (3.7 V as measured) and the two are connected to another two in series (for a measured reading of 7.4 V). .........I think I understand this...then the set of 4 is connected to the other set of 4 I think in parallel.........so I think this should then give me my two times 7.4 or 14.8 volts total.....but the other set of 4 gives "0" V when I measure and the total V of the 8 is 7.4 V on the board (assuming I'm measuring correctly).............the numbers/letters on individual batteries is HL9FJT5 and then 037953.......If there was a source of information to ID the individual battery voltage from the numbers/letters on it, I could then confirm or refute what I'm thinking.....and information to better understand if I have the correct idea about parallel and series attachment is all about........The reason for all this is I'm been trying to figure out if I have a laptop battery problem or a laptop charging problem. Sorry for the rambling comment.

[@remcov3253]

Hi Painless, As usual a good video. Only thing I am missing (or haven't found in an other video of you) is: I have an S500 which requires a 3s battery, I want to buy two 4500ah 3s batteries and usually use them in parallel. I assume i need identical charge state (being best for the battery). But can I use them individual as well and then use them in parallel again?

[@Painless360]

You will. Watch the weight though as that will be a lot heavier than one pack.. Best of luck!

[@ljohnson9797]

Thanks for this video, very useful and simple. I'm interested in making a 12s6p battery, could I make the 12s6p battery then connect a couple of lipo batteries in parallel to increase the capacity?

[@Painless360]

You can always connections mode packs.. see the updated later version here this video... happy flying!

[@mrburton9096]

Thank you for the video, very helpful. I'm planning to buy a 6S 16000 mAh battery to power a ~8A motor for a robot I am building... I tought it could power it for 2 hours but it has 10C written too...so does it mean the battery is capable of 160A? Can I power my motor for 20 hours with that battery? Sorry if it sounds dumb but I'm new in LiPo(s) Thank you again

[@Painless360]

The videos in the 'Introduction to Remote Control' covers many of the basics. a 16000mAh pack will provide 16 Amps for an hour, 32 Amps for 30 mins, 64 Amps for 15 mins etc. The 10C on the pack means that it can deliver 16,000mAh x 10C = 160amps max. Not sure how big the wires on it are! :D

[@Gerleg08]

@@bldjln3158 2 hours

[@thecaptain6148]

Thanks a bunch! I guess I'll be running my two 2200 mah 3s 20C in parallel on my quad that would need 80a. Can't be bothered to get a decent 50c battery myself.

[@thatsmyrc]

Extremely well explained and diagrams just as nice and very helpful 👍🏼

[@konradstasiak5724]

Thanks for this video it will be very helpful when I'll be connecting second battery to the Scooter. Just one question if you don't mind. Will different length of the cables connecting batteries to the controller (one battery in the floor next to board other one on the handle bar) cause some troubles?

[@Painless360]

Cable length on something like a scooter shouldn't be a problem. Best of luck

[@skarebsuper]

Thank you for the helpful video

[@2009clueless]

Hey there this has given me great understanding . I want to connect 2x36v in series for my ebike to run a 2000w hub motor . On the series diagram in this video could you point out where you would have the ignition and the charger point connect to ? Cheers

[@Painless360]

+mert tanay depends on the voltage they need. If it's full pack voltage connect them to the output. Best of luck!

[@rolandclaro9459]

thank you sir for your very understandable well spoken definition of power

[@liamreid3286]

can you list all the connectors and wiring you used to create the series connector for the two batteries?

[@robviolin1]

Thanks - your info really helps.

[@qdog9197]

Thanks... easy to learn just subscribed

[@user-wg6ik1wi6s]

Great explanation !

[@longbowandwarbowcraftingbo2859]

hello great video, i want to connect several lipo rc packs together for a ebike build but i want know do i remove each bms chip from each pack to install a big bms overall or do i just run the lupis with no bms and use a balance charger? if you help that would be fantastic

[@Painless360]

No idea, the packs I'm using here are not chipped. Best of luck!

[@stardoggyxx]

Hi, just watched your video and it’s very helpful, I have a question if you could help? I have a cctv test mointor which the battery doesn’t work properly, on the charger it said 12 v in to charge but when I do that the charger get very hot and doesn’t charge properly, when I took battery out it looked like it was 7.4 battery that was in series, do I need use a 7,4 battery charger as original didn’t come with it , also the cctv mointor has a 12 v out and confused how that works?

[@Painless360]

Tricky to comment without the specifics of the monitor you have but that sounds like there is an issue with the charger, charging circuitry or battery. You usually need a higher voltage from the charger to push the current through the battery you're trying to charge but if its getting hot somethings wrong.. Best of luck

[@michaelwalker4814]

Hi mate great video I have a qestion about connecting parallel lipo batterys to a drone the lead I have made has two battery connectors an the connection to the drone is soldered to the board is it ok to connect one lipo battery at a time on a parallel lipo setup.

[@Painless360]

Personally I'd connect both together and then plus them into the model. It shouldn't matter but be careful. Best of luck!

[@YensR]

5:00 slip of the tongue probably, but BOTH arrangements double the power compared to the single battery, because power = current * voltage. I think it would have been clearer to say that parallel gives you effectively a 3s 4000mAh 10C battery and series gives you a effectively a 6s 2000mAh 10C battery, both able to put out the same max power, which is twice what the single battery can do. Maybe introduce the 3s2p / 6s1p notation, too. It would also have been important to say that parallel connection can be dangerous if the voltages of the batteries are different, as they will try to equalise voltages (one charges the other) and high currents can flow in that situation if you do it wrong.

[@c.g.c2067]

🤣

[@jackjosephtz3]

Will a BMS help in this case? Parallel charging of similar battery packs

[@bartoszsokoowski3659]

Therefore, to obtain a "double capacity powerpack" from two batteries, we should connect them parallel to maintain the voltage of powered circuit?

[@robertengelhardt3321]

H

[@YensR]

Yes, connect them in parallel, you will get twice the run time (or a bit more) and your motor gets the same voltage (but maybe a bit more constant). However, you need to make sure that the voltages of the cells you combine in parallel are very very close.

[@diddlysquat101]

Thanks heaps for these videos, very easy to understand. Quick question for you, I've got a FPV/aerial recon plane using a pixhawk clone and I want to extend my flight time. If I connect two 3S 2200mAh batteries in parallel obviously battery voltage output will be the same at 11.1V however for the sake of setting up my battery monitor in Mission Planner, I will specify a capacity of 4400mAh? i.e in parallel voltage does not multiple but capacity (mAh) does? Thanks!

[@IZuzivowoI]

Nick Kilroy Yes.

[@diddlysquat101]

Thanks!

[@Joey-PRA]

Great video simple explication

[@newport2926]

Is there any way to follow this process doing a series/parallel connection?

[@Custnam]

Hello. I have a question. I have several 6s 5200mah 50c packs and will be needing 8s soon. The ESC connector has a loop connector connected to the 2 ESC leads which would normally have two 4s packs connected to each. Would it be possible to just buy some 2s packs that are the same brand, mah, and C rating and combine that with the 6 to get 8? Ive asked this in another forum and got mixed answers. Some said NO WAY!! And others said its no different than combining two 4s packs to get 8s. Thank you

[@llpooptartll]

Hi i found this really informational but now come to the point when i want to charge both batteries i have the same set up 2 3s batteries together to make a 6s but is it possible to charge it with a bms? How shiuld that work could you please help out thank you

[@sleepnwithghosts420]

thank you, Very educational

[@AndrewSmart32]

So although you probably mentioned this throughout the video, i've got a short attention span so i can't be bothered if you don't mind but should i use paralell or series to maintain the longesyt run time (double the mah), as i heard somewhere that one doubles the speed and the other doubles the run time. Thanks

[@Painless360]

+Andrew Smart answered in the video ;)

[@rogerrabbit4284]

What a great and helpful video Thank you

[@DMVPLUMBING]

thank you youre video is very helpful !

[@Noblishhh]

Thank you, it’s very clear

[@Damian-Mucha]

Very clear explanation, thank You.

[@garyrobinson7128]

Hi great video thank you. I had two old 2s 2200 25c lipos that I wanted to connect together in parallel. I have a 150A ESC so I think this would be ok?

[@Painless360]

Each battery could only supply 55A each when they were new. It'll be less now. Even together they couldn't supply the 150+am;ps the ESC needs.. Hope that helps..

[@guytelfer1353]

Excellent video, so the voltage in series connection is what increases rpms while the amps increases the torque in parallel, soon I'm going to do a short video showing 120volts with a current of about 7.5amps and another being 240 at 15 amps , lithiums may be capable of high current using them in a electrolytic fashion, in general lithiums are usually separate to the load through a pcb unlike nickel that just use diodes, consider rewinding the rotor increasing the gauge to handle the unexpected current or unregulating the current

[@neptunes_hunter1321]

Hye...i have one question...if i use in series can charge my lipo in parallel?

[@carnivorouslee]

Very informative thanks!

[@LastLeyend]

Thanks bro

[@oilswoodhome]

Thank you for making these videos! I use a voltage alarm on my battery, when flying my quad. Should I use 2 alarms, one for each battery if I had 2 batteries in parallel?

[@Painless360]

The voltage is the same across both packs as they are connected together (2:10)> This means you can use one alarm to monitor both packs. Be careful not to mix new and old packs together or the difference in the internal resistance will mean that one will supply more of the current than the other. Happy flying!

[@oilswoodhome]

Painless360 Thank you! I guess I will raise my limit to be on the safe side too.

[@MrKillerhaze]

I did this to my kraton 6s love it running 2 3s 7000mah 100c 💪🏼 now I get 14000mah plus 200c of power 🫡 you sir are the best!!

[@ardislamet362]

Halo, great video. I have some question, what if i use 2 battrey with different mah but same voltage in paralel mode. Will it work fine? Or any suggest and what? Thanks.

[@Painless360]

I wouldn't as one of the batteries will be empty first.. If you are going to do this, start with identical packs until you have a better idea of the principles. Best of luck

[@IMPORTECHML]

hello Painless360, i have a question, i have a drone syma 5 that works with a lipo battery 1cell 3.7 volts, 500 mAh, and also have a drone JJrc h8 that works with a 2 cell 7.4 500 mAh and those batteries has a balancer conector, can i repalce de 7.4 volt battery for 2 batteries 3.7 volts making a conector in serie? is the same than the stock 7.4 volt? does not affect if theres not have balancer conector? i will apreciate your answer, for me is more conveninete for price and time to chage use the 1 cell 3.7 volts batteries, thanks.

[@Painless360]

+IMPORTECHML You can but make sure that the mAh rating of the 1cell batteries are the same as the 2 cell you're using. I would recommend investing in the right batteries for the model as the extra wires and connections all add weight and points of failure to the model and some of the smaller models are very sensitive to extra mass. Best of luck.

[@gustavbork4664]

Very good explained

[@rohangajbhare5273]

Tysm man. Its soo clear

[@simonyoung6120]

When connecting in parallel would it be adetageous to install a large diode so both packs supply the voltage and stop the less charged pack being topped up by the more charged pack. Or does this allow for voltage stabilisation?

[@Painless360]

It's an interesting idea. The problem comes from the fact that the diode will actually drop the forward voltage a little so that'll introduce more problems than it solves. Plus you need a diode that can handle the max amperage of the packs. Happy flying!

[@stevieg6616]

Simple and effective thanks

[@jameslyons1978]

Hi there, can I connect say 2x 4s packs with different MAH in parallel or do they have to be the same MAH and c rating? Cheers

[@prozay6856]

Id say they have to be the same capacity, even though JB says that charging different batteries of different capacities is quite ok. Check his video and suit yourself.

[@izaaczac3682]

what should i use,parallel or series for gel blaster

[@mudskipperdrones]

Hi, sorry for the silly question (love the channel btw) I have two 11.1 3s 2200 mah batteries I would like to put as parallel as I would like a long flight time. I work it out to be 66amp would I have to get ESC's rated to 70A? Thanks Matt

[@Painless360]

In parallel it would be a '11.1v 6S 22.2v pack..

[@thmls5744]

Painless360 no Lee that would be in series in parallel you double up the max amp draw and the capacity

[@gmivisualsjason3729]

Great video....very helpful

[@rcman6895]

have a question I have a e-bike and I have two 36-volt batteries hooked and serious these batteries I have are no more than maybe two months old and I bought a brand new one thinking that what solved the problem and it didn't but I will hook these batteries up in series and put a load on the bike like going up the hill at half throttle I will be halfway up the hill and the votes in the battery were dropped down rate in front of my face so far the bike were cut off and then I would have to unplug the plug replug it and it will be okay until I put another load on the battery and then that would happen again could you please let me know what the problem could be

[@RockandRollRC]

Excellent video.

[@rongeernaert1208]

Clear learning video, but what happens if 2 differend 4S accu's are used, one 4200 mah and one 4000 mah are they middeld 4100 ?

[@Painless360]

Depends on how you connect them. Please see the updated version of this video - link in description

[@rbug4117]

When in parallel what will happen to the balance leads? Do they need to be as well in parallel when one is ready to fly his model.

[@team69racing11]

i have different brands and sizes.. say i combo a 2s 3500mah 20c and different 3s 4000 mah 25c.. to get a 5s total would this be safe to run

[@JesseBlum]

I got that same exact connector today. Its awesome to use my two 7.4 volts that I hardly ever use anymore because I bought a bunch of 3s batteries.

[@monsta21cb]

ok i have a esc that has a y splitter for series 2x2s to make 4s but i bought some 4s batteries that was on sale how can i make a splitter to run just the 4s when i want to

[@dx.christian6517]

Great video, one question though, how do you charge the lipo battery in series? How about in parallel setup?

[@Painless360]

I'd always charge them seperately.... Happy flying

[@nialtubby]

Great video. I want to connect 2 15ah 48v batteries-exactly same make and specs together, but the seller seems to think I will get problems doing this. Have you used these batteries on an ebike or such and how did they do? Any issues longterm?

[@Painless360]

Batteries are connected in series and parallel all the time, it’s how we get batteries with much higher voltages and currents. I’d listen to the seller though, they may know more than we do. Happy flying!

[@nialtubby]

Ah ok, thanks for the information. I think the company are just trying to avoid being blamed if anything goes wrong, as the batteries would be identical-same brand specs, on a mid drive motor. They also say I shouldnt use the 60v 20ah battery they sell! But they sell it! Have you attached batteries together on ebikes or scooters in parallel? Any issues?

[@hokkorimokkori4384]

in the race competition, we have to change the battery as the track is long, and they have to keep the video signal. im planning to use parallel XT60 method. However, is it safe enough to plug in the different voltage battery? e.g. when swapping 14.7V landing, keep plugged for video signal, and plug in 16.8V new battery. then take out the old 14.7 V. (probably few seconds that both battery connected each other) Is it a fairly safe way and wont damage the battery? as it is a simple XT60 connected into parallel, i dont think there is limit of current.

[@Painless360]

If you mean plugging in a battery in parallel with a very different voltage, then that's a bad idea.

[@sillydillydokieo]

thanks for the video. but what does this mean practically? what difference will I see and feel between these in terms of performance?

[@Painless360]

+sillydillydokieo more voltage = more power, more capacity = longer flight times.

[@sillydillydokieo]

Thanks

[@clumsydonkey332]

Are there any dangers when wiring lipos together? Should each lipo be wired to their own ESC or do we wire the ending plug to one ESC?

[@Painless360]

You should always take care when connecting Lipo batteries. How you connect them would depend on the model... best of luck

[@judelabago8851]

I have 2 lipo batteries 25c each. if I'm going to connect them in series will they go 50c in total?

[@kyleboyer1074]

I want to do some test runs on a hydroplane using 8s before I commit to buying anything else, like 10s or 12s, if i don't like the performance of the 8s. But, I will achieve the 8s by connecting 2) 2s to make a 4s, and then 2 more 2s to make another 4s, and then connect the 2) 4s to make the 8s. Is there any reason this may not work? all are same 5200mah though 2 are 25c and 2 are 30c. And again will be ran just for testing, not racing.

[@krayon70]

Great video ! Thanks

[@lastottomanun863]

Hi nice video. how safe is this method as i like to use it for my ebike. Thank you

[@Painless360]

It's the same for any battery but you need to be careful when connecting any calls in parallel or series..