You seriously don't know how much this helped, finding any useful information online is surprisingly difficult. But man, not only did I learn a lot, but I also actually enjoyed learning it all as well. Props to you
Thank you so much for a lovely comment! I am glad that you liked the video. Thank you. Have a look at my the battery building tutorials, there is more additional information there.
Just found this and the knowledge level is excellent. I'm intrigued to know now what in 3 years has changed - what improvements if any have come to us. Thank you.
Pavel I gotta tell ya... The shear amount of value (I'm talking about detailed tutorials) you put out there is on an other level. Everytime I search for a particular topic I end up on one of your videos. I finally built my 1st DIY (bought 3 boards before). Your video on bypassing BMS discharge was instrumental. You're just awesome. A big thank you !!!
Thanks man. This gave all the info I needed that all the other videos I watched did not supply. Making these can be very dangerous and I appreciate the in debt knowledge, plus the peace of mind in making a SAFE battery pack to meet my boards needs.
Best explaination i've seen about cells to date. Thank you for breaking down all information about cells. Like the Brooklyn hat, i am from Brooklyn N.Y. living now in Florida.
"Always buy from a reliable source." That's great advice for buying anything on line, Pavel. Thank you for explaining what those cell numbers mean! That 12S 5p battery will be quite impressive, my friend. Great weather here in the N Central U.S. today. I rode 4 miles on the NLS PRO today, and I think I will take it out again this evening in just a few minutes.
Ryan, Thank you! I would say wait until next video before you decide.... you should see what is actually required to build the pack I think. Thank you for watching and stay tuned : )
Hi Pav I agree in order to cover the subject without skimming over important points and principles, you need to spend the required amount of time. So please stick with your chosen format. I enjoyed your approach to the subject of cells, and your structured and progressive description. I learned and understood a lot, from watching this video on cells. I've subscribed and look forward to exploring more topics in the future. Well done!
Big fan of the NXJO 35A 18650.Very consistent capacitance and output, I know the best application for these is more low volt/resistance but I like the piece of mind it wont start spitting or damage other cells in the daisy chain/pack. I used the Samsung equivalent you talked about, I found they had a very good quality as well, figured I would leave a recommendation for you or anyone else looking for a reasonably priced 18650.
Learned a lot and the length of the video was just right. Thanks. Now I know about 21700 batteries. Just got into building battery packs and welding. Thanks again.
thank you for this, i was completely overwhelmed with the thought of building a 12s3p battery for my diy build. I really appreciate some clear and concise direction regarding this Will keep watching.
I'm just starting to get into building My own battery packs though I don't have an electric skateboard. I appreciate the Tutorial information is extremely useful For my solar projects, though I just have to scale it up a bit. Thank you for taking the time and sharing your knowledge.
Very instructive and easy to understand, looking to repair ebike barriers and this helps a lot, now I can just make my own batteries if I chosen, fantastic vid man, very descriptive and informative 👍
Thanks Pav, appreciate. I'm currently contemplating which battery pack to buy with the bajaboard. Whether the 40t 10s6p or the 50e 10s10p ... so you have been really helpful. There's not much information around the samsung 50e batteries. You have been very helpful. Thank you
Great vid, makes it easy for those that do not know. Only thing I would have added for those that do not know, is that when dealing with electric motors Voltage is directly related to rpm of the motor. Its not complicated, it just shows how we as battery builders balance motor power by rpm and voltage with longevity of amp hrs and the capacity of the battery to deliver current drain relative to motor rpm which also affects how long our battery will last overall. Some people do not quite understand, if you are a heavy person, the motor needs more current to push the same setup as relative to a lighter weight person. So they wonder why their bike or board does not last as long in run time compared to their friends which is identical. And then there is gearing, don't get me started lmfao so that highschool physics lesson is now relevant lol. Awesome vid mate
Thanks for the upload, your explanations are very clear and well executed. I understand the fundamental complexities of battery bank construction a lot better than I did prior to watching tis video, again, thanks for the upload👍
Very well explained and easy for any beginner to follow. I think you for got to mention make sure the batteries are at the same voltage at 3.6 or 4.2 before they start making packs 😉
HI Pavel, so much info, it's so great that you share this with the community. It's a lot to absorb. I have a couple issues i hoped you could help me. I can't seem to find what i need. I'm not sure if i found it and missed it because I'm not experienced enough. I would like to know how to test a load, on a lithium pack for my skateboard. it's a 10s4p, I'd like to know, what is the rating of its max discharge. I have no idea how to do that or what is it I need. Iknow that at least you'll have an answer. The other thing is that i would like to buy a small smart bms for it. I'd love to know what you recommend please.
Thank you very much for all these informations ! Well explained, very comprehensive, I know much more now than before watching your video. I go for watching the others. Thanks again.
Great video. Very well explained. I'm going to use this info to build my first pack to upgrade a Razor E200 scooter from old lead acid batteries, to lithium. Should be a fun project.
Nice video Pavel. I think that those wanting to learn to build battery packs need to spend at least some months studying this online and figuring stuff out. Trying to understand it, watching many videos and going though the whole process and also realizing the dangers... I know pretty much all about it and have known for a year at least. I still don't feel it... My main battery guy sends me emails how he accidentally shorted something just for a moment, explosion, a hole in a battery cell. I managed to burn a third of my table, my whole hand black... I was just soldering XT60 to the battery and the two main wires just touched for a milisecond, never seen lightning in my apartment :D It's crazy what the cells can do. Eskate packs or any bigger packs are not for beginners and even real experts need to watch out and make mistakes sometimes. This shouldn't really be messed with. Badly soldered series, might tear off, then you plug in your charger, charging a torn off 6s battery with a 12s charger and your home burns down... :) You could show what it does when something that is not supposed to touch does... So that people see how real it gets.
Hey Mate! I do agree 100% with everything that you are saying. Very valid points and thank you for sharing them with us. I have a very strong opinion on battery building DIY and my plan is ( and I did mention this in my video ) to make part 02 video where I will show everyone what is required to actually build a battery plus all the dangers of building the pack yourself. Unfortunately there will be people who will decide to build batteries no matter what and giving people as much detailed information as possible is the best we can do as a community. Thank you for the input mate. Hope to see similar comments on the next part ; )
Pavel, thanks for all your help... You make things easy to understand. My dual ER (extended range) battery pack Meepo NLS Pro uses the (10s2p) 21700 cells and I too, will use them in a not too distant home built battery pack custom made deck. I hope to use many, if not all, of the components you're using. I'm looking forward to using a VESC in the build, opposed to the standard ESC's found in the lower cost boards from China. I love my very custom Meepo NLS Pro component based current deck as it was my first esk8... but long for the ability to really customize it to my needs. Thanks again.
Hello Pavel I don't know if you go back and look at comments on your old videos but I have watched about three or four of your videos and you are a great teacher I've learned so much about battery packs and now I want to build a battery pack for my surron I was a little bit leery but now I'm very sure of myself when I go to build it thank you very much
Hi Pavel, here is a good one for you. I have an E-Bike that is 87.6 Volts, 18 AH, 1580 WH, weight is 25 lbs or 12 Kg, I have 3 of them, 2 are dead, 3rd one will not last, Li- ion, they cost $2500 American. They were made in 2012 to 2015. This is basically an electric dirt bike. Battery size is 4.5 inch by 6 inch by 14 inch, It will do over 100 kmh. At about 40 kmh for 100 km. I don't think you can solve this one. The Oldest one is lasting the longest, 10 years, its lost 20 to 30 percent of it original capacity. I can still get 40 km as long as you don't smash the throttle, more like 40 % loss.
Thank you for watching mate. Interesting about your battery pack... maybe some were effected by vibration a bit more ? Did you try opening the failed packs?
Such an awesome video . I am new to building battery packs and this explained a lot and broke it down very well. Thanks for this and I will be watching your other videos .
Also i could never have done any of this without your help your content is absolutely amazing I’ve watched just about all of your videos this is where I e learned how to build packs thank you for such well explained and executed love your content
You are explaning really good and clear. There is not a single word that we should not hear. Some video makers use a lot of unnecessary descriptions , boring to listen . Even thou your video is long it is not really boring. Like to listen what you say next. Good, Good. Thank you .
Really really really good job on this video Pavel. Thorough. Wish this video would have been up when i was researching for my build. Knowledge is power! so are batteries! and the more the better :)))
Well I'm about half way thru were you ask to let u know And we'll I mean I kinda knew the just of everything you've already said so far but most deffently you helped simplify things and gave me some memory tricks and well most deffently thank you for taking you time In explanation and putting your heart into it really appreciat it
Would this advice be impartial of what vehicle i plan to power? For example, an E-bike or a wheelchair! Edit: Since the voltage drops from 4.2 to 3.8 average and then maybe cuts off at 3.2 volts, would it make sense to add more Ps and then use a voltage regulator. I'd imagine that a constant 4.2 volts for a motor, then as the voltage dips, the regulator... regulates - it should draw more amps from the battery, but that would'nt be an issue. I'd imagine there would be quite a few formulas to calculate this shit.
If I can pause the video for a second and say, You my friend are a very good teacher. By repeating what you have said a few times it really helps hit it home. 1P is 4 in parallel which would be 4x3000mAH would be 12000mAH, or 12AH, for the power tool users out there :) giving us a 60 amp continuous draw. I'm a plumbing and heating engineer and learning electrics and how to build my own E-bike, and this video is amazing and very clear too. Thanks for sharing! Now to continue with the video ;-) I'm confused now because at the end you say that 4 in parallel is 1P. I need to watch it again haha, I'm tripping
hi Pavel, thanks for your advice on the 24v battery it is now all sorted and works a treat, my next question is I have a 12v makita battery I can only get 4 cells into the case do I make it 4s or can I make it 3s and 1 p many thanks John
Excellent video! I'm also very impressed with your command of the english language. I'll be looking forward to future videos. And no, it was not too long.
Q: have you used a FSESC 6.6 DUAL? If so what was your setup? I have three 6.6DUALS and all of them get OVERCURRENT cut outs. This does not happen on my Unity FocBox but does on the 6.6DUALS. Wondering if you had any luck with Flipsky.
Hello buddy! Thank you for the question. Yes I do have 6.6 plus dual and it is still installed on the Beast and working fine. So my set up is : dual 6374 , 190kV motors, lipo 12S , 8000 mAmp, 15C. VESC settings: Battery max 120 Battery absolute max 180 Motor max 60 Motor negative -48 Regen -10 Remote - Trampa WAND Hope this helps.
Steve, Thank you so much for watching and a nice comment... glad that you did enjoy the video - means a lot. I was worried that people might not like that the video is so in detail and is long. Stay tuned for next parts of the tutorial : )
Great video. I was thinking the thicker DeWalt battery packs had twice the amp discharge capability because the thick battery packs run my circular saw fine but the thin packs don't run the saw very well under load. DeWalt batteries are 5s2p, so it's the 2p part of it that doubles the amps the battery is capable of putting out continuously. I'm wanting to rebuild DeWalt battery packs and also to make some long range battery packs for my FPV drones.
Hello pavel great video any help please I'm making a 10s pack mostlikley 6p 21ah battery with discharge tgat will be 90a max its for a electric trails bike the controller is 60a and motor is 800w obviously it won't be drawing the full 60a all the time what bms do I use for my back a 90a or 60a thanks
