EBike Battery Pack || DIY or Buy || Electric Bike Conversion (Part 2)
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6 років томуBest PCB prototyping house ($2 for 10 boards): jlcpcb.com
Previous video: • How circuit breakers c...
Electric Bike Conversion (Part 1): • Make your own Sensored...
Battery Type Comparison: • Battery Type Compariso...
Make your own Li-Ion Battery Pack: • Make your own Li-Ion B...
Battery Spot Welder (CD Welder): • Battery Spot Welder (C...
Facebook: / greatscottlab
Twitter: / greatscottlab
More project information (pictures, parts list,.....) on Instructables: www.instructables.com/id/DIY-...
The spot welder that I used in the video: www.keenlab.de/index.php/port...
www.keenlab.de/index.php/prod...
Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
26x INR18650-25R: s.click.aliexpress.com/e/_dY2...
13x Spacer: s.click.aliexpress.com/e/_dVZ...
7mm x 0.3mm nickel ribbon: s.click.aliexpress.com/e/_d6k...
13s 20A BMS: s.click.aliexpress.com/e/_BfZ...
10 AWG Wire: s.click.aliexpress.com/e/_dYe...
Ebay:
26x INR18650-25R: rover.ebay.com/rover/1/711-532...
13x Spacer: rover.ebay.com/rover/1/711-532...
7mm x 0.3mm nickel ribbon: rover.ebay.com/rover/1/711-532...
13s 20A BMS: rover.ebay.com/rover/1/711-532...
10 AWG Wire: rover.ebay.com/rover/1/711-532...
In this episode of DIY or Buy I will show you how to create a proper EBike battery pack. The main components for the build are Li-Ion cells, nickel strips and a BMS. At the end of the project I will then conclude whether DIYing your own battery pack is cheaper than buying a premade one.
Thanks to JLCPCB for sponsoring this video
Visit jlcpcb.com to get professional PCBs for low prices
Music:
In the Hall of the Mountain King, Kevin MacLeod
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)
@-MrDontCare- Рік тому
That feeling you get when you made something, and it works is "priceless".
@panospapadimitriou3498 9 місяців тому
i simply aded a switch cables battery clamps and a fuse with a converter .. i even learned that the one side of the converter has different stats when work.. melted some fuses . ruined some solders ... was epic .. .. when i was 8 . 26years ago my grandpa used to let me play with pcbs and even solder ,, burns and fumes didnt stop me!!!! hope my motivation returns !
@nicewhenearnedrudemostlyel489 2 місяці тому
I think it's actually priceless, because the feeling is completely separate from the cost. Which is not what quotations adds to the sentence... for anyone that needs to hear that.
@-MrDontCare- 2 місяці тому
@@nicewhenearnedrudemostlyel489 You are correct, I have no Idea why I added quotations. 😅
@francishosey551 6 років тому
THE best “how to set up” battery pack video out there! I spent years clarifying and watching other ppl do it! You won’t BELIEVE how many ppl don’t tell you the orientations the batteries or the voltage. They just say “oh spot weld or soldier”
@francishosey551 6 років тому
Thank you GreatScott
@blubbspinat9363 6 років тому
I began refurbishing ebike batteries a while ago and figured it can be quite a profitable business. That welder you got, appears quite nice and works a lot better than many readymade ones that are available for cheap.
@jesusdavidcardenasangulo7955 3 роки тому
I really admires that passionate way to explain and recreate experiments like this one. Keep going in that way mate!
@dj_paultuk7052 6 років тому
At least with a DIY pack build you know that you have good quality cells. Not some cheap un-named brand with no capacity.
@kael13 6 років тому
Can make sure you buy a pack that names the cells it uses?
@blenderixacadomenix4302 6 років тому
and made out of bad Chineseium materials
@JankyShack 6 років тому
at that point why don't you just use a gas engine to drive the wheel? lol
@5thDragonDreamCaster 5 років тому
I've got a lead-acid battery.
@rosonowski 5 років тому
Genset trailers are a thing. I was thinking about getting a little hobby gasser and an alternator, myself.
@mollygrubber 5 років тому
Your camera work is stellar. I wish more people on YT were this good.
@bababooeymonkey6549 2 роки тому
are you in love?
@Speeder84XL 6 років тому
Very nice! Finally a FIY or BUY video that really makes sense - most of the other ones only show what was the best alternative for you (the same doesn't apply to everyone - it depends on your knowledge and budget).
@JamieBainbridge 6 років тому
I like how you make the ads interesting. I have no idea about PCB design but I like hearing random little facts. Clever.
@GadgetAddict 5 років тому
The other benefit of building over buying is that you know you're getting genuine cells. As long as you buy from a reputable place anyway.
@samihyppia8472 3 роки тому
Yea however you have to calculate that he also has to protect those cells in enclosure, to protect it from rain, rust, from shorting and whatnot.. :/
@michaszkopiak7412 3 роки тому
@@samihyppia8472 paa÷ !
@chirranjankumar3131 2 роки тому
9999g ki logzgy5 hg
@miespost 2 роки тому
I will never buy a cheaper pre made e bike battery they are all horrible I don’t care what anyone says. Ride a eBay bought bike battery daily from 100-20% charge and it will be completely shot in months! After that mistake I bought all the tools and started making my own, 13s 8.8 ah battery cost $350 including the tools spot welder soldering gun etc but I’m using very good high drain cells. Most store bought batteries can’t handle a lot of current either, my pack can handle 90 amps continuous discharge and 20 amp charge rate. Not to mention you can use 21700 cells and get better watt hour to size/cost ratio. In the long run it’s beneficial because you have the tools and ability to make any battery whenever you need to fit any device. Have a lot of lifepo4 ups upgrades in the future.
@XdewGaming 6 років тому
I really appreciate your effort in these videos. Just one thing and this’ll be complete!, I’d really like to see a HOMEMADE MOTOR! Thanks!
@greatscottlab 6 років тому
It is on my to do list
@XdewGaming 6 років тому
@greatscott please post a link to the spot welder you got too, i get inspired by your videos and i am the the progress of making my own electric bike kit! Edit: i meant the one they sent you, not the diy one.
@thekakan 6 років тому
He has posted it in the description: " The spot welder that I used in the video: www.keenlab.de/index.php/port... www.keenlab.de/index.php/prod... " The link is: www.keenlab.de/index.php/portfolio-item/kweld/
@XdewGaming 6 років тому
Satwik Satpathy When i got here it was NOT there, thank you.
@RinksRides 6 років тому
ukposts.info/have/v-deo/hnangXlqo2mXqI0.html
@ImmodderNation 6 років тому
I really needed this video. Making a lipo battery pack for a project but was confused about the BMS.
@AmazingDX 5 років тому
That spot welding was so satisfying..!
@caveyak 4 роки тому
This is by far the best concise video on DIY battery packs. Well done.
@johnson12379 3 роки тому
Is it on purpose @7:17, it's not complete yet cuz in regards to the right diagram which is in the sketch he showed @4:00 is supposed to be 3 of that 26 battery package he just created and so if I'll clarify you need 78 batteries in order to get a "48v 20ah 1000 watt battery pack"😉
@fiaviy.5298 4 місяці тому
@@johnson12379where did he say he wants 20Ah? He just need 20A, 5Ah.
@henryswan1374 6 років тому
this is great, i never understood how to use a BMS until i saw this, i'm using the same one as you
@fintonmainz7845 2 роки тому
He explained it so well and in only a few words. Great communicator.
@PhilipStubbs 6 років тому
For the similar price, but knowing that quality cells have been used, I think build should be the winner of this one. Great video again.
@dafalzonAUS 2 роки тому
DIY is always the winner, learning and gaining experience, anyone can buy
@thisisSherno 5 років тому
I guess I'll just buy.. It gets complicated after 00:01
@hugh_jasso 5 років тому
Agreed lmao. Started off simple enough.
@rinku9612 5 років тому
😂
@rinku9612 5 років тому
@@lobsterbaby5302 🤣
@pauls5745 4 роки тому
nooo lol. watch some more vids. quite easy, really
@meazy451 4 роки тому
There's better videos that make it easier to understand. But currently a diy battery is almost just as expensive to make as it is to buy
@pradeepm6063 6 років тому
Great scott, Hi Thank you so much, with the help of your videos i can deeply understand power electronics In my opinion , Without skilled hands education is useless Without kind heart education is dangerous Thanking almighty that you have both After watching your videos i feel that my skills are improving. Thank you again :) :)
@jonnupe1645 6 років тому
I always love the camera work in this show.
@shayanirenberg3294 6 років тому
By far the best diy battery pack video on UKposts
@AdamWebb1982 6 років тому
I think the pro with making your own pack would be making it a larger capacity to the normal ones you buy off shelf. This pack is pretty small as it is. Good start though. Also picking up second hand cells is a good way of cutting costs, although adds risk of unreliability.
@kevinhorstmann1435 10 місяців тому
I steal the batterys from e scooters, i am rebuilding three batteries into one for my ebike. Yes this is stupid, yes it will work.
@frodestillingen 10 місяців тому
@@kevinhorstmann1435 No problem using used cells as long as you check them properly :) I bought a 8 channel tester/charger that tells me exact capacity of each cell
@simgplusnervt4698 3 роки тому
I think the most important is the connection to the rest of the controllers of the bike. Most of the time, the BMS of the battery needs to talk to the controller unit of the bike. Then p.ex. the display of the bike can show the state of charge (SOC).
@josech5743 6 років тому
Man this video was awesome ,the best in months, you explained everything flawlessly.. Thanks for the video !!
@MarchandendYves 4 роки тому
Thank you Scott for your detailed and clear tutorial !
@ELECTRONOOBS 6 років тому
Very nice as always. Do you have plans for an aluminum case for the battery pack?
@greatscottlab 6 років тому
Not an aluminum case, but something else. Will be in the next part.
@unclhos 6 років тому
I imagine he'll 3d print something.
@VivekSingh-og2nf 6 років тому
GreatScott! May be a 3D printed battery case.
@jort93z 6 років тому
I would suggest a flame retardant filament if you 3d print something though, just in case. some of the other filaments are flamable.
@ravivishwakarma7803 6 років тому
Electronoobs i always watch you videos
@GadgetEyeGuides 6 років тому
I like the video. Just in case you didn't know, I thought I would make you aware of some separate options for cheaper batteries. A popular option in the hobbyist community is to buy lots new laptop batteries and disassemble them for cells. The cheapest option I'm aware of is going for used cells from dead laptop batteries. Used cells are a bit tricky as they must undergoe some tests to verify their capacity and condition. Afterwards you organize them Into a pack with similar cell capacitys. This is the option I went with for my personal battery, I ended up with a 14s 12p battery, it runs about 27ah. It cost me less than 100$, but a fair bit of time. I'm excited to see how your project turns out!
@tomcostello8045 5 років тому
Thanks for taking the mystery out of battery packs , Very precise engineering methods .
@jondavidmcnabb 6 років тому
Excellent tutorial! Best on I have seen in a long time. Love the math and the data.
@deadbird99 6 років тому
Awesome video, very, very instructive! Thanks a lot!
@greatscottlab 6 років тому
No problem ;-)
@antonnpn9063 6 років тому
You will find 1kw enjoyable for a brief moment. Then you want more. You will probably build an 5-10kw bike and enjoy it for a moment too. Then you will move into the heavier stuff and beat all the 450cc on the street while realising that you have spent 100x more money on the EV wave than the original budget. But in the end of the day it will all be worth it!
@yashveerthakur7265 6 років тому
true AF!
@davey2k12 5 років тому
We need solid state batteries Tesla gonna start using if they not already We get the shit overstock or crap batches they pay bulk prices and get all good stuff shit bags 😂😂
@pauls5745 4 роки тому
lol. scale that down to 350watt entry level motors and believe me, more than 48v 1500W is scary fast on a bike
@williamschmitt6487 4 роки тому
Just use a gas bike...
@gabrielko2147 4 роки тому
@@mtuz8356 thats not really flying tho...
@talldavid1316 5 років тому
the "aluminium circle" is called a rim, great video👍
@jpaz3852 4 роки тому
I appreciate your ohm law approach to explain it. Very detailed, and well explained. Thank you.
@zanpekosak2383 6 років тому
10:05 holy shit look at that spark!🤷🏻♂️🤣😁😎
@jakats9139 6 років тому
DIY is a clear winner if you allready have the 18650 cells
@theEskalaator 6 років тому
Do you have 30 (or 60 in bigger packs) batteries just lying around? I have some from old laptop batteries, but I can't use them together of course..
@dege10000 6 років тому
Yes you can, most are just a pack of 4 to 8 18650, I take "dead" (usually the managing circuit fails or a cell over discharges) laptop batteries and use them for diy power banks or other proyects.
@theEskalaator 6 років тому
Since some of the cell may have different parameters after being in "dead" battery, you should check their capacity and ESR first. You can of course use them to create something like a powerbank, but If you would use other types from more batteries, it would be very bad. Also you would need 30, or 60 the same cells with same parameters to create something like this battery. You can not just solder any cell to each other.
@jakats9139 6 років тому
Adam Grufík if they are diffrent parameters then you use bms or try to manage get same capacity bunch for one group of cells
@dege10000 6 років тому
Of course, but when you can haul them almost by the literal ton out of tech repair shops you are bound to pile a nice amount of batteries with the same parameters. At least 7 out of 10 will be ready to use, 1 will need some restoring and the other 2 will be dead
@williamjames9515 2 роки тому
I admire your honesty regarding the cost.
@activechaos128 6 років тому
Awesome video. I've been reading up on making an ebike over the last few weeks and this video is just what I needed. Thanks!
@aadharshaansh8108 4 роки тому
add a 3d printed enclosure for the kweld
@rafaelmohl3293 4 роки тому
6:55 I guess those conections were serious
@quique18c 6 років тому
Gotta tell you that today i made an 80$ order + some LCSC smd things, thank you for the continuous quality reviews! gotta check it out for myself!
@MrSdfghjkl2345678 2 роки тому
Thx for al the videos ! I followed this build and now I can cruise on my fast bike in the Netherland!
@Newjorciks 6 років тому
To be fair, if you used the same cells that those battery packs have, it would probably turn out much cheaper. You can't know what cells those have, could be some cheap Chinese ones.
@bartoszrosadzinski2430 6 років тому
Which means that the pre-made battery pack would be much more expensive in the long run.
@rexczi6299 6 років тому
Buy cheap cells from trustworthy sellers on ebay - $1 pr cell at its cheapest
@Newjorciks 6 років тому
Have you actually done measurements on what is their real mAh? Do you know how long/how many cycles it will last? No. With a good brand one you can pretty much know it won't give out after 10 cycles. Chinese stuff has way less quality control and even same batch batteries can have varying capacity or life.
@rexczi6299 6 років тому
Newjorciks tru but just like the chinese knife market, it has gone into a new world... Much better than before.. Tbh its safe to buy almost any 18650's.. just not the 9800mAh cells lll
@MichaelBartonMTS 6 років тому
All of it is from China. There is quality Chinese made products. And cheaply made products. simple as that I dislike when people say "cheap eBay crap" or "cheap Chinese stuff" What did you expect for little $
@LazerLord10 6 років тому
How would you compare this kind of pack to one based on RC lithium-polymer battery packs? I'm going to be working on an electric scooter project soon, and I was aiming for li-po batteries primarily because of their cost and relative ease of use.
@JankyShack 6 років тому
lithium-polymer will be almost the same as far as the math goes compared to lithium ion. If you used packs you would probably want to use 3x 11.1v packs and 1x 14.8v pack in series to get to 13s.
@wujekcientariposta 3 роки тому
Lipo isn't widely spread despite it's large current advantage in evs cause it has less charging cycles of longevity and is more volatile. Both li-ion and lifepo4 can supply enough current at any reasonable capacity, and lifepo4 has much larger range of operating temperatures.
@ahah1785 3 роки тому
Do not use lipo is a bomb waiting to set your house on fire. save a few bucks loose your house gg. Use lifepo4 only.
@davidelliott5843 3 роки тому
LFP is the safest chemistry but needs a larger volume. Lithium polymer has the best energy capacity so is fine for small gadgets. It is too sensitive for heavy duty power especially with vibration in a bike or scooter. Not safe. Don’t go there.
@christopherlastname7638 2 роки тому
@@ahah1785 you're fake news!
@Ultralordbro 6 років тому
this could not have come at a more perfect time. The same concepts here for a batter pack could be taken to more than just an e bike and i have been looking for a good explanation that really broke the process down for using li-ion cells.
@bensinor4974 2 роки тому
Big benefit to DIY is knowing your pack is solid. Buying cheap modules can have poor results. Definitely a good idea to crack open what you bought if you can to see how good of a job they did inside.
@TheVexCortex 6 років тому
You want to match battery pairs by their internal resistance, not their out-of-the-box charge voltage.
@zachburke8906 6 років тому
TheVexCortex i didn’t know this, I also have never tried to measure a batteries resistance. Do you just measure it like a normal resistor?
@TheVexCortex 6 років тому
You need a special meter to measure it, if you hook it up to a multimeter, you will probably kill your multimeter. Mine is built in to my charger: www.amazon.com/Version-Digital-Battery-Discharger-Temperature/dp/B00ZGZZ40K/ref=sr_1_32?ie=UTF8&qid=1526094888&sr=8-32&keywords=lithium+charger www.walmart.com/ip/Tenergy-5-in-1-Intelligent-Cell-Meter-Capacity-Checker-Battery-Balancer-Battery-Discharger-Internal-Resistance-Tester-ESC-Servo-PPM-Tester/179864013?wmlspartner=wlpa&selectedSellerId=2240&adid=22222222227056692896&wl0=&wl1=g&wl2=c&wl3=233956535514&wl4=pla-384625138979&wl5=9022129&wl6=&wl7=&wl8=&wl9=pla&wl10=113146105&wl11=online&wl12=179864013&wl13=&veh=sem should do the job though.
@shumymikaball 5 років тому
Measure voltage drop in a resistor and do the math.
@IrishSkruffles 6 років тому
You can't trust the cells you get on ebay but, labour cost is a major disadvantage (unless you class it as a hobby then its worthwhile) One point on the BMS, what's the balancing current? it's probably not very high.. so I'm wondering if there was a more severe voltage difference in the cells would the little passive balancing circuit cope with the charging current?
@michaelschalk4718 6 років тому
Skruffles Balancing current for most BMS is typically under 50mA
@IrishSkruffles 6 років тому
Yeah that's what I thought, even at 100mA I'd be a bit wary of some cells overcharging when series charging the pack.. I suppose some manual checks every now and then would suffice
@Pushyhog 5 років тому
Germany batteries
@saygnileri1571 4 роки тому
Thank u for writing down all required equations. This is really useful!! Thanks
@RamSees13 3 роки тому
amazing video. i was just drawing up plans to do this myself and only afterwards did i find this incredible video. in my case i did a comparison of the diy battery bank to the retail value for my ebike and it saves me nearly $750USD. jeez louisee
@davey2k12 5 років тому
I'd of doubled that pack it wouldn't last long on a 500w hub
@EngineeringNS 6 років тому
Be careful with those chiese lab bench power supply's, sometimes the voltages becomes wrong after use--Then your circuit suddenly fries and you don't know why. When you check power supply voltage, the display says 4.2v and its actually 6v. It's pretty cool.
@barrycrowder 6 років тому
Nice video. I just replaced a bad cell in my Prius battery, and as far as I can tell, it works in a very similar manner.
@reverendgaddy2435 5 років тому
so clear and succinct. you really demystified making battery packs!
@nootgourd3452 4 роки тому
5:40 "The n***a ribbon"
@jm036 4 роки тому
He's fucked up the pronounciation so many times, it's hilarious.
@MilesBellas 4 роки тому
German / Swedish word his pronunciation is therefore accurate nickel (n.) "whitish metal element, 1755, the name was coined in 1754 by Swedish mineralogist Axel von Cronstedt (1722-1765) from shortening of Swedish kopparnickel "copper-colored ore" (from which it was first obtained), a half-translation of German Kupfernickel, literally "copper demon," from Kupfer (see copper) + Nickel "demon, goblin, rascal" (a pet form of masc. proper name Nikolaus (compare English Old Nick "the devil;" see Nicholas). According to OED, the ore was so called by miners because it looked like copper but yielded none."
@VVVVV99611 Рік тому
cANcELleD
@amazingcreativitywork1438 5 років тому
I make a 24v 15ah battery pack.The best 18650 (....) mah and how many batteries are needed? Please say if any kind of BMS will take place
@motopar_tech 5 років тому
It´s the better video learning to build Li Battery. Congratulation, GratScott!!!
@GogoTech 6 років тому
This was the video I am looking for my eboard thanks a lot finally I watched your old one a couple times but this one is the best
@albertox0404 6 років тому
DIY BMS or BUY? 😁
@greatscottlab 6 років тому
I have it on my to do list but that will take a while.
@WarrenGarabrandt 6 років тому
This please! I actually really want to make my own BMS so I can do regenerative breaking and have different voltage outputs for different things. (lights, traction motor controller, etc.)
@MohamedMagdi-iv8og 5 років тому
@@WarrenGarabrandt me too
@WarrenGarabrandt 5 років тому
@@greatscottlab Can you show how to do BMS for lead acid batteries? I know most people just slightly overcharge the highest cells so that lower cells can get a charge, but that damages sealed batteries like gel cells.
@alrado4167 4 роки тому
buy
@simonfox_8559 6 років тому
What is the advantage of connecting the battery holders in series as opposed to parallel? How does this affect current and voltage?
@jort93z 6 років тому
thats simple. If you connect them in parallel you'll be able to draw a higher current (rated current of the cell)x(number of cells) and the voltage will be the same as a single cell (so 3.0-4.2 volts), and if you connect them in series you'll get a higher voltage (voltage of one cell)x(number of cells). Since his device only works at over 40 volts you'll have to connect at least 10 in series to get a suitable voltage. If you wanted to build a spotwelder with them(like the K-weld he showed) for example, you'd connect them in parallel instead. You can also combine that like he did. so that means you have groups of 2 cells in parallel, which gives you double the maximum current, and then put those groups in series, which gives you a higher voltage. Thats the electronics basics. Like, first lesson basics.
@simonfox_8559 6 років тому
I did not know that the configuration of the battery spacers was so important!
@jort93z 6 років тому
The spacers? i thought you were talking about the nickel strips lol. I guess the spacers are connected in both parallel and series.
@simonfox_8559 6 років тому
What is the difference? How do those spacers affect voltage and current?
@simonfox_8559 6 років тому
Are you sure....
@wimwiddershins 6 років тому
Great stuff! That spot welder is tempting.
@blessedchildofgod200 5 років тому
Love the name. I immediately thought of back to the future
@geniusaur 6 років тому
you should have a look at the high capacity rc batteries on hobbyking, you get alot more bang for your buck there, ebike specific batteries are ridiculously expensive
@Z0DI4C 6 років тому
Depends what you're going for. Hobbyking Multistar cells weigh 40% more for the same capacity compared to 35E's, and many new 18650's do cost less.
@tiborkiss9186 6 років тому
Well, currently on Hobbyking: 10s 10A lipo pack (20C discharge, 2C charge) - 40 EUr, incl. shippment to Europe. I think it is a quite good deal.
@_Piers_ 6 років тому
Tibor Kiss Hey, could you put a link to that battery, I can't find :(
@jeb5032 6 років тому
any cell has a tendency to puff when used incorrectly... Ive had some of my multistar cells for YEARS, never had one puff yet. i have the crazy big 16ah 6s and 4s packs and multiple smaller quad and plane batteries, your using them wrong if they are puffing mate... dont spread rumours...
@eduardoavila646 6 років тому
Or you know bike/car batteries could be used too, with some circuitry together
@TheRealRaZtar 4 роки тому
Would getting 21700 batteries be more beneficial?
@Patek007 4 роки тому
Tigoo yes
@edslab5383 6 років тому
As always an amazing video. I really enjoy watching your videos. You're so creative.
@bananaslug5278 6 років тому
i am also in the process of making e bike... except for the difference that i dont have money and have to use alternator as motor and some gel or lead batteries, but still can as always take some new knowledge from your videos . Keep up the good work!
@Videoswithsoarin 5 років тому
PCB for only $2 is deceiving. shipping is minimum $10
@skodbolle 4 роки тому
5:37 Did he just call the ribbon the N-word? :O
@IMDYT420 4 роки тому
5:40
@MrSummitville 3 роки тому
NO! He said, "Nickel ribbon"
@jtb2586 3 роки тому
3:02 I always respect people that are able to use fineliner pens, without smudging it around.
@tonythediyer8537 6 років тому
As usual, well done. Next video we need to see you riding this bike!
@Hunter_Bidens_Crackpipe_ 6 років тому
You don't need 20A cells anymore if you are only doing 2p... Whats the point of calculating amperage for 1p then buying 2p? 30q would of been perfect, more capacity and possibly cheaper.
@Wojtkacy 6 років тому
the battery pack he made is only 240Wh, it's really small... he could have used batteries with 5A max current draw, but make 13S6P pack for at least 500Wh capacity (with 2000mAh batteries...). It would have been cheaper and of course it would last much longer
@KevinDay 6 років тому
Running batteries at less than their maximum C rating is more efficient. The more current you push through them, the more (I^2)R losses you incur, therefore there is more wasted capacity, and more heat reducing the longevity of the cells. It's never bad to have a good safety margin, unless you are trying to "get away with" as few pennies spent as possible.
@Wojtkacy 6 років тому
Kevin Day Sure, but in the end 13S6P pack with 2000mAh 5A cells will do better than 13S2P 2500mAh 20A in my opinion. And it can be cheaper as well.
@vgamesx1 6 років тому
Nacho Mendía Heavier than the four Lead Acid batteries you would typically use with a bike? Yeah I definitely not... Even if you went for small 5Ah batteries they would weigh about 4lb each so 16lb total and even heavier at a more useful capacity like 7-9Ah, whereas an 18650 will weigh about 50g per cell, so that would be 8.6lb for a 13s6p pack which is considerably lighter.
@KevinDay 6 років тому
Wojtek Kamiński Yeah, I meant to mention in my comment, I'm not saying that his solution was the best one, just that there is at least SOME reason to do the calculations for 1P and use 2P.
@soulsbreaker 6 років тому
Boah Alter! This is BS You bought a 3d printer when I got my first 3d printer, I thought it's all a coincidence. Then I start panning an e-bike. I start planning my battery pack and sketching up the pack on CAD. And then you stat making it too! Stop it! Hahaha All jokes aside, love the video and the coincidence. Might as well show you what I did to get around the task. I build a sport welder from a scrap PSU transformer haha And 3d printer. My battery pack
@Inesophet 5 років тому
As a Old Ebike rat i was ready to pounce, but this was very well done. Just as a tip typical city traffic load is about 3Amps. max draw usually around 20-25 amp when full throttling from a stop. To extend battery life and range dramatically slowly accelerate Especially in city traffic there is often little need for going maximum velocity. I personally prefer Lead acids on my main workhorse though. I have a Li Ion as a backup. Never use below 12Ah you wont get far.
@Tiger1x1 3 роки тому
I appreciate your honest review and the way of explaining things..
@dustycrustyhomelessman1648 5 років тому
5:41 the *what*
@luizz1997 6 років тому
Why you stopped posting links to aliexpress?
@greatscottlab 6 років тому
Was not worth it
@franciscopen1681 6 років тому
GreatScott! Wait why, because aliexpress products are unreliable?
@DavidScheiber 6 років тому
no, likely because spending the time to hunt the product down on multiple websites is time consuming
@TheKrogon 6 років тому
real mvp
@0xCAFEF00D 6 років тому
iwantitpaintedblack looks like someone else can do it for you ^. ^
@florianfeith 5 років тому
Great video. I wish it had been out a bit earlier because I made my own replacement battery Pack a few weeks ago. I also ordered the cells at accuteile. I soldered the nickel tape to the cells which is a pain in the ... . Theres one thing you might want to know: I realized the range at which the BMS turned off because of overdischarge was quite low. So I tried to get my head around it and realized that it might be due to short negative voltage peaks at the start of high power consumption (i.e accelerating). So I soldered a 1000uF support capacitor parallel to the output of the batterypack (i.e. the BMS). Et Voila: Range nearly doubled. I also created a range extender from the old cells which were ok according to capacity but just developed a higher inner resistance. I still try to figure out a good way to parallel the two packs safely. What I do right now is charge them both and then just connect them via a 10A fuse (which by the way blew twice already). Keep up the great work. I like the accent. I have the same (-;
@EfficientMan 2 роки тому
I believe you should not connect in parallel two packs that are not the same (not same age in your case). When I want to balance batteries in parallel I connect them through a resistor initially, after a while I put smaller value resistor, you repeat that until you cannot see voltage across the resistor anymore which means no current so they are balanced.
@barirwin8559 5 років тому
Thank you, man . I learned loads.
@deepakjoshi6242 6 років тому
Sir, why don't you make a video on " how to design schematics and custom PCB using easyEDA ". I know you've already made a video on easyEDA but it doesn't help at all in working on it. I'm really not able to understand which tool is why and which tool is where and tool I need ... What its name..?? Please it will be really helpful. Thank you.. Respect🙏 and appreciation👏 from India🇮🇳🇮🇳.
@greatscottlab 6 років тому
I will make such a video when the time is right.
@deepakjoshi6242 6 років тому
GreatScott! Will be waiting eagerly..😊
@Asu01 6 років тому
I'm early, let me tell you a joke. An Indian who obsessed and keep asking for USB soldering iron.
@greatmjh6853 6 років тому
?
@arunmiscellanous 6 років тому
He's already posted the thing yet again. 😜
@harsheelsingh4866 6 років тому
Yeah agree lol
@bunnypeople 6 років тому
Wut. Lol
@LalanDesai 6 років тому
What goes your bappus ?
@nitunitu9911 5 років тому
Dear Scott great basic introduction ,its include every thing for the basic to explore,thanks
@officialm0016 5 років тому
Such a video creator man...perfect awesome ...your work is amazing man...
@jakegarrett8109 5 років тому
5:40 so sounds wrong...
@thehatedones5153 4 роки тому
ni**a ribbon
@Detura 3 роки тому
Glad someone else heard it too lmao
@julianblacksmith8539 8 місяців тому
Isn't LFP better
@luongmaihunggia Місяць тому
Safer but lower energy density
@WillSmith-zk8hh 5 років тому
Always liked your work! Thanks for sharing!
@88ElevenShop 2 роки тому
That's some great content and production value. That kit looks great.
@samuelsparks8114 6 років тому
But with only 5Ah and drawing 10Amps you will only have 30 minutes of charge...
@greatscottlab 6 років тому
True. But that is why I will do testing in part 3.
@gelu88 6 років тому
Samuel Sparks also, the way to use these is not continuously at full power. You use it as a pedal assist. The current draw is much less and you get hours of use, while still dramatically reducing the difficulty of pedaling.
@curtbeers1606 6 років тому
Can it charge when coasting? Like some Hybrid cars do?
@MsSomeonenew 6 років тому
30 minutes of full power, usually you don't drive around like that.
@DFX2KX 5 років тому
@Curl Beers That depends mainly on the speed controller, some carry regenerative braking, though regenerative coasting isn't something they normally do.
@hamzaezio1784 6 років тому
I have bought 200 li-lon battery for 5 dollars XD in a garage sell
@Rocan0 6 років тому
Hamza Ezio Argh... for $20 Can I have 35 cells ? x)
@zachburke8906 6 років тому
Time to start going to garage sales.
@goldbunny1973 5 років тому
Beautifully clear video. Very informative and well planned & presented.
@TheWebstaff 6 років тому
That welder gives lovely welds might have to look at upgrading my welder!
@NickTheGreek5109 6 років тому
5:32 "nigga ribbon" :P
@nrdesign1991 6 років тому
even "worse" at 5:40 lol
@Krspy2 6 років тому
Lmao had me dying
@MarkVegh 6 років тому
I was sure I wasn't the only one who heard it 😂😂
@edism 5 років тому
Sounded like nickel to me, I guess you just heard what you wanted to hear.
@apex3d595 5 років тому
LOL!
@DavidScheiber 6 років тому
so diy if you feel like it?
@greatscottlab 6 років тому
Yes
@manojbr439 6 років тому
I really like diy version cause its not only fun to make but also we can know exactly whats going on and always we can repair it ourselves.
@slartybartfarst9737 Рік тому
By far the best explanation and video work Ive ever seen on E bike battery creation and function coupled to an unbiased conclusion of price, very business like, very professional, thank you.
@moustafamohsen 6 років тому
why didn't u show the bike on the road
@greatscottlab 6 років тому
Part 3?
@Nicksperiments 6 років тому
Because it’s just a battery pack and wheel right now. It obviously isn’t put into a full bike yet
@moustafamohsen 6 років тому
GreatScott! yes
@sgssa666 4 роки тому
I just xant believe that he is just 1.1 mil subs he deserves more
@luisrovai 5 років тому
Great video, as always! Greetings from Brazil
@MrNigel1340 6 років тому
Thank you for a very informative video Scott.
@Fungineers 6 років тому
Well done Scott.
@domi1711 6 років тому
great video as usual. Keep up the good work!
@MOST338 4 роки тому
This is amazing! Thank you 🙏🏼
@arguescreamholler 5 років тому
I've made a couple of multipurpose battery packs and working on one for my bike now. This answered the questions I asked before. I bought a 36 Volt 11Ah for less than $300 also. My motors are 36v or 48v. I had a 36v only that stopped working. Haven't gotten around to see why with others operating and available. I want to increase the Ah and voltage without burning out the motor.
GreatScott!
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