DIY electric motorcycle 72V battery build (DIY E-moto Part 3)

[@skyguy4164]

I have seen many battery making videos. this one being one of the most safety oriented ones. others use really unsafe methods of connecting the cells, ignoring the possibility of error and so on. thank you so much for a good video!

[@mateng7707]

Sure, laying a whole battery pack on the bent connections is way safer than other methods

[@gearhed78]

You like those orange gloves huh.

[@andyfumo8931]

​@@mateng7707when did he do that

[@bismuth7730]

If this is one of the safer ones i really dont want to know what kind of videos you were watching before. This build is terrible.

[@ericjacques3113]

I am currently working on a motorcycle conversion project. This video is gold! I will need to buy or make a 72V battery pack to get this bike moving and I plan to copy your work as closely as I can.

[@kendarr]

I love how every diy battery pack looks like a bomb while making it

[@jsnellink1990]

On that note. When fully charged, there is roughly 10MJ of energy in this pack, which is about equivalent to a Coca Cola bottle Molotov Cocktail :)

[@kendarr]

@rbc21 Yeah, pooly used vapes knows that

[@vex123]

well, it basically is.

[@kendarr]

@@vex123 True xD

[@kendarr]

@B. Lim That dude was a little more insane then a 300w cloud but yeah

[@GeeleJire-m7w]

I completely regret that i got your videos just few hours ago.. very very educational and simple.. thankz your great videos.. it helps me more enough to make batteries for bikes, battery banks and so on....

[@gericraig1825]

I love the simplicity of your videos, I just built my first mountain bike conversion and with your video on how to build power packs , I’m confident I can make a proper power supply for my 2000 watt hub system, I’m a subscriber and I give this video 2thumbs up 😊

[@cecilgibbssr.430]

I am planning on building a battery for a Viking Tandom Tadpole Trike my son and I built a few years ago. This battery with supply power for a Bafang 52v 1000 watt Mid Drive Motor I intent to purchase to complete our project. Your videos are highly informative as I am sure your books are even more so. Thanks for all you do for the DYI world.

[@PaulBarwick]

I love all the videos you produce, whether building batteries like this one, or reviewing e-two wheelers. Keep 'em coming, please!

[@joshuadughi]

Hi Micah; Thank you for your videos and content! I own you battery DIY book, and I have read several of the chapters two-or-three times (I don’t want to set my house on fire, or hurt myself) but your videos “round out” the topics. A 20S12P, 72V 40 A hrs, 2.8Kw battery! Now that’s beefy! Thank you!

[@bluewanderer9903]

Hi Micah, I cant thank you enough, in 6 months time I went from total newbie not understanding a thing to a competent person ready to build my own ebike from scratch. Between this channel and EbikeSchool, your book and Vruzend there was enough material to keep me busy interested and learning for days upon end, and I enjoyed every bit of it and still at it. There is one subject that keeps eluding me and that is controllers, I dont know if you had that covered already on your channel I couldnt find it and I would love to learn a bit more about that. And while on the subject, what are the chances of you developing and offering a product like that for sale? Thank you.

[@D_Onibokun]

Hello Lynda, I'm a newbee to this thread and everything still looks like magic to me. I am amazed at your recorded successes. I wrote to the presenter but have not heard from him. Can I buy one sample of your own build 72V battery to help me "step by step" in studying the procedure as a newbee. Also, where can I buy all the required parts from? Where store sells them? If you send me your phone number I can also call you. My name is "Bill", I'm in New York and my email is [e-mail] Thank you.

[@bluewanderer9903]

@@D_Onibokun the only good way to learn about building battery packs is to buy his book, it is by far the cheapest, shortest and most safe way of learning ALL you need to know about lithium packs. It covers absolutely everything, from basics of lithium chemistries and different types to sourcing, ratings, building and construction methods, management, connections, charging, everything and anything to do with lithium batteries is covered in that book. Cheap too, best 20 dollars you will ever spend. Book is "diy lithium batteries, how to build your own battery packs" by Micah Toll , available on amazon, he has a couple of other good books too. Dont know what parts you are looking for but plenty of websites around the world sell lithium cells, one of them is vruzend.com or co.uk and they also sell some other great stuff like assembly kits for builings complete packs, bms, chargers etc. Read that book and watch few of the uploads on this channel and you will have no problem understanding where and what you want to do. Research and discovery is the next best part of the journey besides building, for me at least.

[@lithiumalan776]

@@D_Onibokun we can provide.

[@mrboleus8240]

How did you learn all about electricity?

[@Xtrafix2015]

This is one of the reasons why I love your videos is because your awkwardness shows your a human that makes mistakes but awesome input as always

[@Technoholicplus]

What about cooling, Sorry I am New, but i have heard, generally high drain batteries emits lot of heat.

[@computersfortheautisticfou9420]

I think he is placing it where the motor/gas tank goes so when it is in motion the air going around it will act like a cooling system but just a guess on my end

[@Doyle69]

12 Parallel, this configurations will help keep cooling down.

[@Yuricthebold]

I am sure whatever housing he builds for the battery will also channel air flow to assist with cooling.

[@davidwho8215]

Nice job

[@jeffbeasley8235]

MJ1's are not high drain cells by any stretch. Also, with this hexagonal packing scheme, the batteries near the center of the pack will get a lot hotter than those on the outside. That's of course dependant on how much power is charged or discharged, though.

[@jideolubunmi3876]

Wow, your ease with narratives & illustrations makes this journey quite interesting thanks.

[@joshuaPurushothaman_]

I'm doing a project for school and we could really use those books!

[@lenhawkins3803]

Great video Micah. I learn more from you and your battery build videos than anyone else. You actually teach by explaining each part of the process. Great job! Thanks!

[@xpndblhero5170]

Can't wait to see the finished product because I've been wanting to do this for a while now¡! Thanks for doing it and getting all the important details right... That's helps alot. 😊👍🏻

[@clmetal2]

Thanks for everything you share, Micah! I am making a 10s2p but it needs to be layered (cube shape 2x5x2). Seeing you fold this with the plastic sheet in between answered my question

[@jordanmkrebs]

Really interested to see what your typical range and max speed is on this build.

[@joeows6537]

20S12P with 200 amp discharge, 72 volts 36Ah ... I just purchaesed 3 of your books on Amazon... I am looking forward to building a battery for the Luna Galaxy Paint I'm gettin. Thanks for the video's.

[@JamesWilliams-ji4mg]

Folding the pack over like that is kinda terrifying, why did you do it that way instead of connecting the 2 packs in series?

[@AimForTheBushes908]

He wanted tighter packaging due to the space constraints.

[@furqanandmatt]

Hi James. Didn’t really understand your comment. Maybe cause I’m a newbie. Could you explain further?

[@Zomby_Woof]

Dollar store cutting boards rock I use them for all kinds of fabrication, mostly for directing air - Custom pc building, a/c to water chiller conversion. Also backing for drywall repair. Cheap, rugged, non conductive, waterproof. Oh, made a sanding attachment for my drill too

[@bridylph]

this is the future. hope lithium mining can become more sustainable for ecology and people.

[@username-rs4vf]

actually since lithium batteries are explosive if cut or damaged, people are researching new types of batteries with even higher energy densities compared to li-on. The guy who worked on the li-on battery helped with a new battery based on glass and sodium and it has 3x higher energy density compared to li-on. www.forbes.com/sites/unicefusa/2019/12/26/qa-austyn-weiner-in-senegal-with-unicef/#57ed73ae59e3

[@ewaldwolk2250]

Lithium mining is not even close to what oil is doing to the nature and human.

[@chefkendranguyen]

Very good tutorial. Thanks.

[@gideonsailianpuia]

I want to see the whole process of building batteries and using them on Ebike. Can you make a video of it?

[@SupremeRuleroftheWorld]

he just did

[@tindalowos]

@@SupremeRuleroftheWorld where

[@DanDan-kx4zv]

I like how you clearly detail all your work. You the best!

[@Star_Sn1per]

Now i understand why they charge 2000$ for these battery's

[@MrNobody_1618]

No I don't it look really easy when you know what your doing and pretty fast too !

[@bruhsanto8836]

convince and time

[@Real_MisterSir]

@@MrNobody_1618 first of all, you need to consider the basic cost of materials and battery cells. Then the manhours to build it, and then the final manufacturing that ensures minimal hazards for the user once they install the battery to an appliance. When you do it yourself you can jsut jerry rig whatever idiotic bomb you desire, but as an actual industry supplier you need to achieve certain safety standards. This all costs a ton of money, especially when you aren't a mass producing manufacturer. Price always escalates exponentially when you go up in size and complexity per unit.

[@Meonlymeagain]

What size of nickel strip did you use for the connections. Was the parallel strip the same size as the series strip ? Looking to do a similar project for perhaps a 150- 200cc equivalent. Thinking about a123 cells or using a electric car pack. Thanks. By the way did you ever finish this project ?

[@Zomby_Woof]

@@Meonlymeagain take a look at batteryhookup.com - they have a steady supply of standard new cells, plus a fast changing stock of salvage stuff from ev's and industrial recycling. Have to check frequently if you want to snag the best deals on the non standard stuff.

[@d-dogjackson7933]

Another CLEAN build bro! I used the 52v triangle video battery for a couple of my bikes and now I'm feeling the need for more speed & power. Gloves and the plastic cover while welding can save you a BAD burn so listen to him! I put the nickel strip on the wrong cell once and burned my finger almost down to the bone cause with electric burns you won't notice it till a couple seconds after its too late. Just be careful. I still get nervous building these things after that s**** so better safe than sorry, 72v will burn BAAAD

[@brennanduncan298]

I cant wait to see the top speed of this thing! my brother in law wants to build one now! LOL

[@samuelogbodo2173]

Enjoyed watching your making process,all the from Nigeria. And will be grad to learn more from you.

[@troyjones4271]

this is DEFINITELY something I wish I had started learning a long time ago

[@CBob357]

Thank-you, your videos have encouraged me to build my first E-bike.

[@LU7HQW]

Hey! I'm a Happy Winner !!!! I send you an email, Mikah. Thanks in advance.

[@SanjeevSingh-zn1hr]

As i saw your video first time but its so helpful you have told all the connections with safty ....thats awesome ..become fun of yours ....i am from India

[@SeeUsFly]

One day I'll replace the two-stroke gas motor on my Paramotor with a battery pack driven electric motor.

[@charadremur333]

Cool, make some videos about it! I would love to see thatà

[@eyeetu7490]

I assume it would be a lot better feeling flying silent rather than with that noise.

[@beluga944]

With lithium ion battery it wouldn't be a nice Idea. Hopefully in future with newer battery technologies it would be possible.

[@modernblacksmith]

You make it look easy...what was the total cost of this battery?

[@madvizion742]

I spent 11 mins here and he didnt even demonstrate the use of the damn thing...smh... highly disappointed Mr. Ebike, highly!

[@joshbrock2663]

if you touch either pole youll die pretty quick.

[@maxms6087]

@@joshbrock2663 no

[@akshayrai9542]

You motivated me... Now I own an ebike... Eagerly waiting for your electric motorcycle conversion video... All the best for your future endeavors...

[@kanewoodward4276]

I wanna rebuild this exact battery for my old honda

[@beesod6412]

I can't thank you enough for these videos, just picked up your book ultimate DIY and just finished my build, thank you so much Micah!

[@bootslangley4875]

Hola Micah, Merry Christmas to you and yours, I've made it just under the wire (11:27PM 12-25-19). Glad to see you back, healthy, wealthy and having fun. I have 3 words;eHONDA eHONDA eHONDA!!!!! Really want to see this project's progress. This video is a great continuation and contribution. I'm more excited now than before!!.I don't like the look, or how NOT nimble they are, but for $500, I couldn't pass up an eDrift Fat Tire Scooter. It needs a larger pack than the 60V 10ah Li-Ion it has at the moment, so this video may be instrumental. Do you have any thoughts on overvolting that eBike's 1500W Brushless motor's speed controller? BTW; something I've been doing to my 57V (soon to be 61V) "Vruzend" packs, since I live in So. Cal. ie the Mojave Desert, is NOT completely sealing the battery packs I build. I leave 2 sides open, so there is airflow through the pack. On my little 32mph 750W Brushed Motor CURRIE Schwinn "TESLA" eScooter (stock was 36V/15mph), I also drill out/swiss cheese the bottom floor of the battery case, so air can get up into the pack and add even more cooling. Even in the 90-100 degree temps that I've run my eBike packs in this last summer, none got over ambient temp and my packs are as strong now as when I built them. Just a tip that I hope may help for those of you in hot climates. Now, heat shrink is cheap, so for this cold(er) time of year it's easy to seal those battery pack sides up & the holes in the battery tray and allow the packs temp to stay inside to help keep the pack warm as well. Then, just cut the sides back out for summer and only do the reseal job once a year. Thanks in advance.CheersBoots LangleyLa Mesa, ca.PS; Hey, I have a decent Resume myself;Mechanical Design & Machine Drafting (2 yr Tech School Degree), a lifetime of Automotive/Motorcycle Service, Repair & Restorations/ Racing , including several years as a Technical Editor (Cordura Publications/ Mitchell Auto & Truck Repair Manuals). Any need of a part time, Old, toothless, fat guy as a USA/So. Cal Editor of anything Electrical Transpo Related? Especially 2 wheeled? Just wondering!! ;-)Thanks in advance.PPS; I just spent 30 minutes typing and spacing and creating a completely readable message and stupid youtube turned it into an almost unreadable blob of text!! SIGH!

[@mrkeopele]

Thanks Micah, I have 3 not working, good, nearly new ebike batteries: (52v15ah, 52v14ah, 36v8ah) plus a few small packs for a few more cells, and a spot welder, i want to combine my cells/packs to get a 72v battery for a new upgrade to an old 2014 A2B Alva+ with the 24" MXUS 3kw kit. what should i have, or do, to best build my battery. As far as shaping it, mainly, the original battery on these bikes wrapped around a beautiful strut under the rear rack, so if i could shape it to do that again that would be optimum.

[@bj97301]

Link to the bms?

[@alonsopiedra4884]

yeap. That AliExpress link does not match the one he used

[@HassanDibani]

here you go www.alibaba.com/product-detail/20S-72V-Li-ion-Battery-Management_60742136406.html

[@BagelKing-wz2zx]

Wat the fack

[@robertosmarr4369]

I'm just starting to convert my old year 80 into an electric street bike so of course I have to source some street tires and appropriate lighting but I'm looking forward to the challenge. Hopefully I win one of your books. Would probably be really usefull

[@andrewfoskett2527]

1ST 😜👍

[@MultiRafael23]

The process of teaching and learning will make a cleaner world for future generations ...

[@michaelepps6700]

This is one of your best videos.

[@nordenvonthule]

This was awesome Micah. I have an ONYX RCR with a 72v setup, been thinking about making a battery for it eventually. Really excited to see your motorcycle progress.

[@msotolopez]

Great instructional video, I’m also working/planning on building my own 72v lithium battery pack for an electric Chinese bike that I salvage but it instead had lead acid batteries which are completely dead and can’t hold a charge. Hopefully I can start this project before the summer begins.

[@alphavlogger8004]

Bro nice battery pack. I love it

[@JoseGonzalez-gl7zd]

It is satisfying to watch this battery pack making.

[@normellow]

You can use thin G-10 fiberglass sheets to protect the batteries too. Cheers

[@SameRoadAdventure]

I love all your videos bout batteries... praying to have your book.

[@Subliminal_Secrets]

He sir i am your big fan I am mechanical engineering student and i am working on e bike project And u r my inspiration. I just want a live session in which i can clear some of my technical doubts

[@christopherking2999]

Cleaning out a tool crob in classroom we moved to I found a Razor e500s frame. Cannot wait to get started.

[@peterlo5900]

I'm so keen to build my own 72v 3000amp 40ah battery pack too. Great video.

[@andyfumo8931]

3000amp??????😅

[@samdob9832]

hello great job Is it better to weld the series together first? and then the parallels? or does it not matter? in some videos it's built with busbars and fuse wires, what's the difference? I think your manufacturing is better...

[@specialk22tt]

Great to see an update on the e-bike! Merry Christmas dude.

[@vivekjava3925]

Great work man... If possible can you create content for the solar battery?

[@mta3562]

Awesome video, learn a lot about battery building even thought I’m into electric skateboard. Your videos are very helpful

[@nicolasrossetto643]

A good tip to customize blue shrinking tube is that you can glue them together with superglue to create really big tubes or custom shapes. Note that the superglue won't release when hot air is applied l. Happy building!

[@AiswaranDevaraj]

the most proper explanation for the most useful process!

[@shiva.9650]

Good teaching 👍.thank you How much cost 72v40ah

[@jonnybo20]

Great 1 step closer to the finished bike!

[@FuzzLife]

excellent stuff.... probably i will build my project x video after learning a bit from you ... awesome diy bro....keep it going .... proud of people who can do things and at the same time help the biking community.

[@DD-yf4yv]

Looks like you tore some of the battery protective casings when inserting them in the holders seen middle of battery around 3:00 of video the heat shrink is all wrinkled. I am thinking this might be a potential failure point if the heat shrink fails and have some leakage. the rest of the steps seem well done. cool project! good work

[@ebiker66]

Can I just add cells to a battery pack I'm using in a parallel connection only and not doing a series connection?? Thank You

[@dylantheriault9007]

Finally bro a 72V battery pack built. Thank you ! Would be nice to see you built a 72V using the Vruzend kit.

[@alexdelatorreh]

have you think to put an alternator in the front wheel to charge the battery ? i like your precautions in your building

[@deathleprichan99]

Nice. I am going to school to become an electrician and I just found your channel and it is very interesting. Cheers.

[@warrenharston5886]

Hi I am waiting on your book now and can't wait to read it. Love your work.

[@Calthecool]

lol the individually packaged cells, that’s a lot of cardboard

[@Jay-tr3px]

Hi. Thanks for this great tutorial video. I was wondering if its easier to build what you did here using 9v batteries. What are the obstacles that you will come across with building a pack with 9v batteries?

[@srqFF]

Wow I have no idea how I ended up here, but that was pretty entertaining. Im used to only using 1 18650 cell in flashlights. Now to see so many all wired up together was cool!

[@danieltroger]

Didn't know about the blue heat shrinking stuff. Thanks for the informative video!

[@ashishkshirsagar6460]

Bro i am india, I am planning to make an electric car using 72 v 5 kw BLDC motor, And i am watcing so many video for making battery pack, But this is one of best video i have watched till now.. Great work..I would like be in your contact..

[@derekklui]

OMG... Seems simple. I have to watch it many times, plus the BMS clip. Thanks

[@harishrajamani4922]

Hi thanks for sharing the build , im inspired to build the same now. Also i would like to know if there is any possible way of charging this battery pack with 100w solar panel? . if yes can u share how can it be done🙂

[@jimhofoss9982]

Harish Rajamani You can use a “buck style” converter, like a MPT-7210A....connect it to your solar panel, and program the unit to charge up to a 72 volt battery. They are dirt cheap on Ebay. It will work slowly with a 100 watt solar panel, only about 1 amp charging on a sunny day. (1 amp x 72 volts = 72 watts) I charge my e-bikes with solar, using this very model...but use 6 solar panels for increased charge rates.

[@sufianag5790]

like the way you pend the battery in half 👍

[@ChrisStCyr-bh1bp]

I should really get one of those Arduino spot welders... getting tired of soldering batteries.

[@jacintoaraya1178]

I am brand new at DIY lithium battery building. I’m still quite confused about most aspects of the process. I think I need to get a hold of your book on the subject. Thank you for how well you present information.

[@hammercom2]

Great video. With the high cost of a e-battery this is very informative as long as I keep my wire straight!

[@Lavbun190]

Great job. You gave me clear idea on how to make water resistant, shock absorbing battery bank. Thank you. Now gimme my book 😅

[@W4WEnglish]

Can't wait to see the Honda finished

[@coldrider3517]

TY for another video . You say cell must be at the same V b4 assembly ; getting 00's cell at exactly the same V is ideal but unlikely so what is a range that is acceptable 25mv ? the cell i have purchased have 3.226v-3.236 ATM , it's going to be a couple weeks b4 i have the missing hardware and assemble the pack , i will mesure them again then , that will also tell me if the $ i spent was worth them , cheers & ride safe

[@YannFromIATA]

Great video! Can't wait to see the motorcycle conversion finished!

[@SwagLifeMedia]

Man I wanna make my scooter run forever 😂

[@SpeKterDesigns]

Thanks for running a new battery build Micah once I get a hold of my E-0bike i hope to build a common spare battery or just build a bigger Amp/h battery by connecting them in series.

[@player1unknown9]

Any tips on how to do 72v 54ah but 400amp or not possible working on 8000watt e-bike eventually I’d like to build my own battery for it

[@andyfumo8931]

Same here. Looking at some 32700 cells for 6000mAh each. Should be less cells required for a 72-96v high Ah battery

[@mguarin912]

Great point that accidents rarely happen the first time you do something. 💯 True. 😂

[@sani9238]

Cool project. I want to see that Honda go

[@paralfreqnc1397]

I need that DIY LITHIUM BATTERY book. I NEED IT!!!!

[@Skoney710]

Just discovered your channel, very interesting. I can't wait to learn more.

[@hamizfamily9381]

Really nice sir! Is there any simple item to make battery? Dreaming to bulid special battery on my dyu1 lol

[@mmtruckingllc657]

Awesome video! That looks really professional, like it was made in a factory!

[@fatboynavarro]

It so interesting to see your videos,I really wanna learn how to build my own battery when the time my E-bike battery failed.I have 48V 15 AMH on my hey bike ranger 500 w motor.Looking for up grade for high voltage and amp hour battery and bigger 750 w motor.

[@Ryan-dz3jo]

Nice work Micah.

[@ragchaasurengalindev]

Thank you so much for the educational videos. I was wondering if you advise on the following. If i connect many 72V packs in parallel, what type of BMS should I use? Should I use one big BMS or smaller BMS for each pack, then connect them?

[@SurvivalSquirrel]

It looks all professional. But there is one flaw: at 7:55 you run the wires over the bare strips?

[@noce1071]

If I needed to build this battery but in two pieces , would it be better to split the packs into two 72 v batteries or. Two 36v batteries

[@spokehedz]

Can't wait to see the motorcycle this is going into!

[@erikyordanov7707]

I had this question in your last video, but I think I know the answer now - Hi since this is latest video I hope a get a response 😅 Basically I have a 14s 2p battery with mj1 3.5ah 10A cells with a 30a bms and 1500w motor Basically if I give to much throttle the bms is switching the power off and I need to unplug and plug back the battery otherwise the power won't come up Do you know why this is happening and what I could do to fix it Thanks in advance

[@ARepublicIfYouCanKeepIt]

The battery voltage rating is: • 14s*4.2Vmax= 58.8Vmax • 14s*3.6Vnom= 50.4Vmax • 14s*2.5Vmin= 35Vmin The battery current rating is: • 2P*10A=20A Power (W)/Energy (V)=Current (A) • 1,500W/58.8Vmax)=25.5A • 1,500W/50.4Vnom)=29.8A • 1,500W/35Vmin)=42.8A The 14S/30A BMS rating is 50.4Vnom*30A=1,512W To put it simply, you've connected a load greater than the system rating. Especially considering that electrical circuits are typically specified with a 25% safety margin. Yours has almost none. Not all Battery Management Systems are created equal. While the BMS is _rated_ at 30A, it may not be up to pumping that much power on a continuous basis. Most likely, the BMS is disconnecting on over current. What's unseen is how your batteries are being damaged. They may be *rated* at 10A, however they're *capable* of discharging at higher rates, up to and including that of a dead short. When goosing the throttle to full power, depending on state-of-charge, you're pulling between 25.5A and 42.8A from a pack rated at only 20A. This generates a lot of heat, and heat does two things: If there's enough of it for a sufficient duration, there will be fire. However, without fire, the life of the cells is being drastically shortened. You have two choices: *Option A:* Decrease the motor power rating by governing it down, or replacing it with a smaller motor. *Option B:* Go to a 3P or 4P pack, as well as a 50A BMS. Of course, you could always keep your "foot off the gas", so to speak. Best of luck.