Most exellent of you for not editing out the mistake in wiring the second set of sensors. It is so helpful for us to see how you approached and managed this uncomfortable situation in a thoughtful and precise manner. I applaud your humility.

@SolarEngineering

2 жыл бұрын

thank you for the feedback, appreciate it.

This might be the best video I have seen on DIY LiPO4 battery construction. Certainly the best explanation of the reason for balancing, differences between top and bottom balancing, etc. Very well done video!

@axoidmax

2 жыл бұрын

I agree. So many DIY videos that lack complete explanations. Also, seeing his mistakes is a good indicator of where things could go wrong, and, what to watch out for. Excellent Video. Thank you.

16:40 All the cells WILL indicate the same voltage as they are connected in Parallel. Only way to measure individual voltages is to disconnect either positive or negative terminals. The end result stays the same as you were trying to get the cell voltages closer to each other which you achieved by charging in parallel. The rest is very informative for the newcomer to LiFePo4 batteries. Good video sir.

@SolarEngineering

3 жыл бұрын

yeah I missed that step, thanks for letting me know. And thank you for kind feedback.

@lilwwwlil

2 жыл бұрын

))) that is what attention to detail is ! Although the mistake was obvious once you know .... but I did not see it until I read your comment !

@jdickson242

Жыл бұрын

Yep lol

The best splaning ever made. Congratulation! Very Good Work man!

An excellent step by step breakdown for mere mortals who are interested in building their own packs, you have done exceptionally well with your presentation, taking the time to explain what is important along the way and WHY it is important as well. Thank you very much you have another subscriber.

@SolarEngineering

Жыл бұрын

Much appreciated!

Thank you for this video. It is (by far) one of the most helpful and informative videos on batteries I have seen! I'll be coming back to this a lot as I build my own.

@SolarEngineering

2 жыл бұрын

appreciate your feedback

Best DIY LifeP04 so far, in a similar video to this, i have to go through about 5 videos just to see to the end.

Thanks for taking time to share your knowledge.

@randeb1974

3 жыл бұрын

Looking forward to working this out. Randy. helperdude2016@gmail.com

Fantastic build, thank you for posting!

This was a great video, before I was confused about building a battery and now I'm ready to try it myself and I'll probably watch this a few more times.

@SolarEngineering

2 жыл бұрын

glad it was helpful.

This was the best explanation of how to build. You explained each step vs just rushing through.

@SolarEngineering

2 жыл бұрын

thanks!

Your description is very good. You explain step by step what must be checked before entering the next stage.

@SolarEngineering

Жыл бұрын

Glad it was helpful!

Very thorough. Thank you!

Just came across your video showing how you build a LFP battery. EXCELLENT! Wish I'd had it before I built mine, although they are working wonderfully. thanks again.

@SolarEngineering

Жыл бұрын

glad it was helpful!

Very impressive & informative I liked the info in the drop down too. Links/time codes etc. Got my mind working overtime now.⚡️

@SolarEngineering

3 жыл бұрын

thank you for the feedback!

What a Lesson professor! Cheers from Brazil!

@SolarEngineering

3 жыл бұрын

)) thanks

Lovely - thank you so much for this very in-dept description

@SolarEngineering

3 жыл бұрын

thanks!

Thank you very much!!! The best explanation that Ive ever seen!

@SolarEngineering

3 жыл бұрын

appreciate your feedback.

Nice build! Very informative!

@SolarEngineering

3 жыл бұрын

thanks

Thank!, you very well explained,it claered many questions I had.

Very good explanation of balancing! Thanks.

@SolarEngineering

3 жыл бұрын

thank you

Excelland job showing how it all works !!

Good video. helps with troubleshooting too. Importance of balancing was well discussed, as was BMS and care in installation. Good to make an error and demonstrate recovery. I would add 1) mention how you were careful with box cutter, 2) verify that the brass/silver = -/+ was true polarity in ALL cells, 3) I work in an area where a fire could be easily controlled, or at least reacted to. 4) drop your deep socket and watch out! short city 5) wiring for charger on the inside of terminals? asking for trouble.loose wire ,ditto. 6) "I don't see smoke. Good" Strong work

@SolarEngineering

3 жыл бұрын

really good points, thanks

Thank you! Appreciate you really explaining each and every step so thouroughly.

Solid info my friend thank you very much for that!

Very professionally explained! Thanks you.

@SolarEngineering

3 жыл бұрын

thanks for the feedback.

Top shelf instructions. Thank you for your clear, and concise directions..

@SolarEngineering

2 жыл бұрын

your feedback is much appreciated.

Thank and very nice demonstration about BMS!! Thanks

I'm in the process of converting my scooter to electric using the existing CVT (modified to reduce power losses). The mechanical part is a piece of cake for me but building the battery turned out to be a major headache. Thank you for explaining it in an easy to understand manner.

@SolarEngineering

3 жыл бұрын

nice, glad that video helped!

@johanwagho5257

8 ай бұрын

I'm on exact that same path with the same findings

Wow I'm learning more from this! May you live longer SIr!

@SolarEngineering

2 жыл бұрын

thank you for the feedback!

This is a wonderful explanation. It is most interesting the mistake you made in connecting the balancing cables. This has been my worry though I wire correctly but I imagine what would happen if such error occurs. Thanks greatly for sharing the video.

@SolarEngineering

3 жыл бұрын

thank you for the feedback!

I would like to say thank you very much I thought your video was very good I found that you explained everything very well from start to finish Cheers Anthony

@SolarEngineering

3 жыл бұрын

Thanks Anthony.

Thanks for the video, it's very educational for a person like me without any experience.

@SolarEngineering

3 жыл бұрын

thanks for the feedback.

@engrevergreenifeanyiohaegb4188

2 жыл бұрын

@@SolarEngineering good work

Excellent. Thank you. You are a scholar and a gentleman.

@SolarEngineering

3 жыл бұрын

thanks :) appreciate ffedback

Thank you very much for your videos. I happen to have to do mine with 8 batteries and this video will be very helpful. Thanks again.

@SolarEngineering

2 жыл бұрын

glad it was helpful!

Always learn more when I watch your videos! Thanks, J

@SolarEngineering

2 жыл бұрын

thanks!

Looks great. Thanks for the video.

@SolarEngineering

3 жыл бұрын

thanks!

Thank You for this very good video, its exactly what i am planning to do, already have ordered cells from China an BMS which looks almost exactly the one in your video. Very good explanation and very helpful indeed. I feel now much better prepared to do it right and i am not a professional at all. You did a very good job with this video.

@SolarEngineering

3 жыл бұрын

appreciate your feedback.

Excellent demonstration.

@SolarEngineering

Жыл бұрын

thank you

"OK. I don't see smoke." LOL This was an *excellent* video. I learned a lot. Thanks so much.

@SolarEngineering

Жыл бұрын

Glad to read that! Thanks.

Very good and clearly explained. Thanks you got yourself a new subscriber.

VERY GOOD VIDEO - everything is carefully planned for easy explaining! A near perfect explainer video. I suspect your channel is very underrated - as an electrical engineer myself, I have a feeling that it won't take long for your channel to grow exponentially! Subbed & Liked!

@SolarEngineering

2 жыл бұрын

haha, I wish your words become a reality :) Thanks for the feedback.

I have learned so much from your presentation, thank you. Excellent presentation of data with the discharge rate chart...helped me understand the issue exactly, also pointing out the different battery configurations possible...you covered alot and helped me immensly.

Excellent!

brilliant step by step video tutorial. well done

Very nice video. I like your soothing voice and good explanations. Subscribed !

@SolarEngineering

3 жыл бұрын

thanks

Brother excellent detailed video you have answered all the questions in my head on how to start off lifepo4.. Many Many Thanks for your videos! Happy New Year. Gokhan from London

@SolarEngineering

3 жыл бұрын

appreciate your feedback

Great video, got the info I was looking for. Thanks a lot!

@SolarEngineering

2 жыл бұрын

Glad it was helpful!

Thank you for your video. Great information that is easily understood. Well done! Looking forward to your other videos.

Fantastic job !

Very informative. Thank you.

@SolarEngineering

3 жыл бұрын

Thanks!

I am just getting started and this was a great video for me.

Very nice build. Very organized. I like it. Big thanks for the information

@SolarEngineering

2 жыл бұрын

thanks for the feedback!

Very well explained and done! I made sure and gave it a LIKE!...

@SolarEngineering

3 жыл бұрын

thank you

Great info. I really like the easy way you explained it. You have a new subscriber. You have teaching kills. Thanks again!

@SolarEngineering

3 жыл бұрын

I appreciate your feedback.

Excellent battery build video.

@SolarEngineering

3 жыл бұрын

Thanks 👍

Nice explaning, whery good video!

When you top balance, use #10 or larger leads from the power supply, put terminals on both ends and don’t use it the banana plugs or alligator clips. Connect the leads to the two common rail taps but at opposite ends so no path is shorter or longer than another. Not at the center as shown during balancing.

@SolarEngineering

3 жыл бұрын

good to know, thanks for the advice.

Got to give the credit were it is due... and sure its due to you, best teach skills I've seen by MILES (and I've watched not hours but weeks on tuts) best aproach...viewers know nutn 🙂and you did nicely xplained point after point no MORE or LESS info and a clear and good view on the task at hand, I know when reading these three lines it dnt look like a big deal but its a fact that the most cant cant get that tutorial vid just right... soooo, not the teacher but THE MASTER 🙂 🙂

OMG I LOVE that accent!!! 🍻 Great video mate ✌️✌️

@SolarEngineering

3 жыл бұрын

appreciate your feedback!

Very professionally explained! Thanks you. One question: what resistor do you use to avoid the spark at the convertor and where do you connect it to discharge the spark?

@SolarEngineering

3 жыл бұрын

for 12v use 12+Ohms 24v - 24+Ohms 48v - 48+Ohms this type of resistance will allow only 1 amp to flow. You just need to do it once when connecting wires to inverter terminals.

@princeeze9414

6 ай бұрын

How can I get this product

Wow, EXCELLANT!!!

Thank you for The good explaining and moore, it's easy to think that you maybe are a University teacher or something... Greatings from SWEDEN for a very PRO Channel! 😀

@SolarEngineering

3 жыл бұрын

thank you for the feedback!

Good video. I learned a lot. Thank you very much.

@SolarEngineering

Жыл бұрын

Glad it was helpful!

30:00: "I don't see smoke ...". Sounds so familiar to me :)

Thanks for a clear and good explanation it helps a lot and GOd bless

@SolarEngineering

3 жыл бұрын

thanks

Thanks man

Excellent work and explaining

@SolarEngineering

Жыл бұрын

Glad you liked it

Thank you doing this video. Even your mistakes are good for this video

@SolarEngineering

3 жыл бұрын

yeah, I thought it's a good thing to leave in video, to see how easy is to make mistake

@tylerb9808

3 жыл бұрын

I'm glad you included that overlook. It shines a light on how important it is to double check things. Even if you fried your bms, the lesson would be long learned. And I really appreciated the texts on the screen as you moved along. I made notes! Helped me understand C ratings a lot better. Thanks!

отличная работа

Thank you very helpful and educational!

@SolarEngineering

2 жыл бұрын

you are welcome!

Best video I’ve seen so far

@SolarEngineering

Жыл бұрын

Thank you.

love it thanks

very detailed, thank you

@SolarEngineering

2 жыл бұрын

Glad it was helpful!

Fantastic Video! Very informative and educating! Only small suggestion I have: It helps the batteries to last longer if you compress, but I think you know that already.

@ludlow7369

Жыл бұрын

compress? He might know but we might not... Compress what? The cells to each other? My butt cheeks?? ?

@cvdheyden

Жыл бұрын

@@ludlow7369 Your testicles

Good Job Man, Thanks

great video, very helpful

You probably didn't plan it, but making a mistake with one of the BMS wires at first was a nice demonstration of what and why you're testing the connections :)

@SolarEngineering

3 жыл бұрын

totally unplanned, glad that I didn't burn BMS

@whazzat8015

3 жыл бұрын

@@SolarEngineering You showed why it's important. Bravo!

@TheBluebird65

2 жыл бұрын

This also shows that any one even an electronics guru can overlook a detail that could cost and shut down a project. Great demo of double checking your work. The signs of a good teacher that is unafraid of admitting he is human. Thank You. I now feel obligated to subscribe.

The best explanation in youtube on DIY battery pack ! 👍

@SolarEngineering

3 жыл бұрын

appreciate your feedback

Priviet. Very good explanation. Thank you

@SolarEngineering

2 жыл бұрын

You are welcome!

Отличное видео. Спасибо.

@SolarEngineering

2 жыл бұрын

спасибо за отзыв.

Very good explained and filmed

@SolarEngineering

3 жыл бұрын

thanks!

thanks for this video. thanks for this. the mistake is a humble process that you did not remove. It will also help me to be careful. thanks much and God bless you.

@SolarEngineering

Жыл бұрын

glad it was helpful!

@ajgonzalez9926

Жыл бұрын

Hey bro how long take them to ship to you?.

perfect video

Очень хороший видео брат спасибо💪

@SolarEngineering

3 жыл бұрын

спасибо

Спасибо за тест. Не согласен только с последним доводом - провода от BMS до ячейки обрезать по длине не рекомендуется. При использовании ячеек необходимо снять все наклейки с предохранительных клапанов что между клемами. Час назад сделал заказ на 16 штук (по вашей ссылке). Собственно от туда я сюда и пришел)) Еще раз спасибо за видео и всего наилучшего!

@TK-123

2 жыл бұрын

Shorting the wires has no negative effect. Your just measuring voltages, hence very small currents..

Thank you so much Your explanation helped greatly And i like hoe you say positive and negative 🥰

Nice work ❤

Excelent, thank you !

@SolarEngineering

11 ай бұрын

You are welcome!

I am about to tackle a similar project with 48(!) prismatic cells. This video is perfect timing 🙂

@SolarEngineering

Жыл бұрын

48 in series??

@PawlSpring

Жыл бұрын

@@SolarEngineering Not quite. Ultimately a 16S3P, but they have to be top balanced.

@SolarEngineering

Жыл бұрын

@@PawlSpring ah I see, I have same bank 3p16S. kzread.info/dash/bejne/hHaTscFugNPcZ8o.html

Great one sir, thank you .

@SolarEngineering

3 жыл бұрын

you are welcome :)

Красиво получилось. Одно замечание. Между банками классно бы поставить листы диэлектрика. Сами банки у вас подключены между собой шинами. В случае если перетрется, оплавиться, расплавиться, да что угодно случиться с изоляцией самой банки у вас будет К.З. И в отличие от ленты из никеля контакт хороший. Можно еще подумать о плавких предохранителях. Но, это уже на любителя. П.С. Спасибо за видео.

@SolarEngineering

2 жыл бұрын

спасибо за совет и за отзыв.

Outstanding.

@SolarEngineering

2 жыл бұрын

thanks!

At 16:36 you are testing cells connected in parallel so you are not checking the voltage of an individual cell, rather you are checking the voltage across all the cells. The reading will be the exact same along the wires (baring a large current moving through a small wire causing a voltage drop). Also you initially set the power supply to 3.6V in the hopes of charging them to 3.65V which can't happen. I see later on that you increased the power supply voltage to 3.7V.

@pieterh2058

3 жыл бұрын

This is what I noticed also immediately. Just checked the comment to see if i was the only one. Does this guy know what he is doing?

@LoekiNL

3 жыл бұрын

also the testing of the 4 feet wire on the end. he does not know what copper resistance is, or at l;east does not know the voltmeter is of high resistance, so in test it does not matter. with ballancer you will have current and so will have copper resistance that is relatively more important.

@ianworthington2324

3 жыл бұрын

@@LoekiNL These were my two criticisms as well. Though in the case of the BMS sensor wires I'm guessing that the BMS current draw is not high enough to produce any significant voltage drop.

Excellent - I have bookmarked this and deleted all the other 'popular' explanations.

@SolarEngineering

Жыл бұрын

Glad it was helpful!

Hi from Australia Very Very much enjoyed you video , Great information and easy to listen to. And professionally presented ............. Extremely helpful A big thank you ( Liked and Subscribed )

Thank you. This video has just the right amount of detail that I was looking for re: how to create my own LiFePo4 battery bank. The excellent video/audio production quality is an added bonus. New subscriber here. PS: But I'm unsubscribing if I get shocked in the process! Just joking...

@SolarEngineering

3 жыл бұрын

)) thanks for the feedback

merhaba . 60 & 72 v bir sistem kurasaydınız izlenme oranlarınız çok daha fazla olurdu.Bu videoda çok başarılı olmuş. çok fazla emek harcadınız.teşekkürler.

I might be missing something. @16:22 you are measuring the individual cell voltages but they are all parallel connected. Isn’t that the reason all the voltages are pretty much the same? Wouldn’t that be better if you remove the wire and measure them individually? Thanks!

@SolarEngineering

3 жыл бұрын

that's correct, missed this step, busbars should be disconnected.

Thank you

@SolarEngineering

2 жыл бұрын

Welcome!