How To Make A Lithium Battery Pack With 18650 Cells | Practical Skills For Makers

Подписаться 106 тыс.

Просмотров 343 тыс.

50% 1

In this video I show you how to make your own custom lithium battery pack using the common 18650 lithium cell. I talk about how to connect the cells in series to get the desired voltage you need, and how to connect the cells in parallel to increase the capacity of the battery pack. Then I go over how to arrange them in the plastic spacers, and how to use nickel strip to spot weld the cells together. Finally I talk about using a battery management system (BMS) to add protection and properly balance the cells as you charge them. I wrap the whole battery in a protective insulating layer and shrink wrap.
New videos are uploaded as soon as I finish them!
Try Altium Designer for free: bit.ly/AltiumByteSized
Get 30% discount on purchase: bit.ly/AltiumDiscount
Materials:
----------------------
18650 batteries - liionwholesale.com/
2 cell battery brackets - amzn.to/3J17T2R (Amazon affiliate)
4x4 cell battery bracket - amzn.to/3H31bYB (Amazon affiliate)
Parallel nickel strip - amzn.to/32k6VxH (Amazon affiliate)
Individual nickel strip - amzn.to/3FrX3Rz (Amazon affiliate)
Battery Management System - amzn.to/32iOIR8 (Amazon affiliate)
Spot Welder - amzn.to/3WlnwaN (Amazon affiliate)
PVC Heat Shrink Wrap - amzn.to/3yFvJwg (Amazon affiliate)
If you're like me you have creative ideas that are trapped inside your mind. Byte Sized Engineering videos will give you the knowledge, inspiration, and confidence to make your creative ideas a reality. You are more capable than you think, and I want to help you unleash your inner maker!
You shouldn’t need an engineering degree to make your ideas a reality. I suffered through years of engineering school so you don’t have to. I know how it feels to want to make something I’m excited and passionate about, but also feel overwhelmed by not knowing where to start. I’ve unlocked the secret to getting past this feeling of being stuck. In my videos I show you how to take complex problems and break them down into smaller, more manageable “byte sized” pieces.
If you want my recommendation on what you should watch, I put together this playlist for you. • New Here? Watch My 10 ...
You should also subscribe to byte sized, and consider become a supporting member through Patreon or RU-vid memberships. Supporting members get access to behind the scenes content, free project build guides, discord community server, early release videos, and monthly hangouts. Thanks for taking the time to watch this video, I look forward to seeing you next time!
Subscribe: ru-vid.com?sub...
Instagram: / bytesizedzach
RU-vid Memberships: / @bytesizedengineering
Patreon: / bytesized
Byte sized merchandise: teespring.com/stores/byte-sized
If you're interested in what tools I use for byte sized projects, please visit:
www.bytesizedengineering.com/...

Развлечения

Опубликовано:

19 июн 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 327

@bytesizedengineering Год назад

Huge thanks to my *channel members* who make these videos possible. If you want to support what I do and get access to free project files, an awesome discord community, and much more, head over to *www.patreon.com/bytesizedengineering* or click the *join* button here on RU-vid.

@Dragon-Slay3r Год назад

How about the huge battery pack?

@Vmaxfodder Год назад

Hello , I am making a 84v 23s or 24s that is 40 amp hour with 8 wide 21700 50s samsung . I am having a hard time figuring the total amps and watts ? What size BMS do I need ? Thanks

@Neilukuk Год назад

Do you know what the maximum mAH 18650 battery you can get?

@chupacabra4897 11 месяцев назад

Can you use these to power a solar generator ?

@user-ph5eb6ic3x 4 месяца назад

Werlke lassen apparaat gebruik je om te lassen?

@mrhow2712 2 года назад

You have to make sure the voltage is all the same before connecting batteries. Surprised he didn't mention something so important!

@xXx-un3ie Год назад

ikr and not even some thin gloves while soldering and spot wielding. Like if he touches it the wrong way he could get a up to 48V 48mA shock, assuming the skin has around 800 ohms resistance + up to 200 ohms for potential inner-body current flow. This is a bit away from the lethal area of 100mA-200mA but 48 volts with a good nice current can damage a lot depending on what it travels through(hope you dont have it travel from one finger to the opposite hand finger because every current flow near the heart is always reallllllllllly bad. Anyways, the batteries are able to do up to 30.000mA continous depending on brand and cell and should not be taken lightly especially when increasing the voltage and the watts like that.

@FBI_Agent_ Год назад

Can't you build it all the batteries at 0% and charge them to 100%?

@xXx-un3ie Год назад

@@FBI_Agent_ They are never at 0%. Normally you should stop using Lithium batteries when they reach 2.5V. Anything less damages the battery inside because there needs to be a certain voltage to prevent the charge carrier from reacting chemically with each other. This is what you get then if something happens: the battery's insides react with each toher and produce heat, water, co2 and so on and might explode if the pressure gets too high. Also when charging you charge with 4.2V outer voltage up to 3.7V inner battery voltage. Anything over that has similiar effect as if you under-charge. So theoretically your 0% to 100% scale for batteries is jsut an area of volatge where it is safe to operate the battery and that is somewhere between 2.5 - 3.7V if you wanna be good to your batteries you make it narrower like 3.0 - 3.6V which also cuts away some capacitiy but prolongs the battery's life

@FBI_Agent_ Год назад

@@xXx-un3ie Oh okay thank you that explains a lot.

@asrielandcharadoesstuff4789 Год назад

Actually each cell has to be charged individually and balanced so if there's no BMS with multiple 18650s I don't think you're going to achieve the very good set up

@mtherr Год назад

When selecting battery cells, AH specification is important but it should be mentioned that continuous discharge current is equally important. Some cells can discharge at 20 amps rate while others will allow discharging at less than 3 amp rate. The current capacity of the nickel strips should also be considered. I also found out that not all BMS will balance batteries. Some are battery controllers that will protect from over discharge or charge and will not do the balance function at the end of the charge. I do like your videos.

@michelkotoff-rizzo3112 Год назад

Loved this video. I went to school for electrical engineering and I never made the connection that building this sort of thing was this simple

@pandaexpresso Год назад

thank you so much for doing the wire management around the bms. underrated step.

@BigCaseadilla 2 года назад

Just came across your channel while trying to learn how to make my own board for a prototype of a product I want to make. Loving your videos so far!

@richardisom4783 8 месяцев назад

Cool video, I've seen a few others about building a battery with BMS but your knowledge and background helped explain in more detail.

@HawkImagery 2 месяца назад

the beat with the spot welding is a nice touch

@zip-tv_ Год назад

Love the spot welding to the beat of the music. Excellent stuff.

@tariqbacchus 2 года назад

Man watching you spot weld those pink lithium ion cells together was so satisfying to watch!

@redcloverschoolhouse7501 2 года назад

This is a great video! Very clear and informative. Thank you! 😁

@chuckraymond3564 Год назад

excellent job, I especially like adding combustion fuel rubber insulation. it will make overloading more exciting

@natebatchelder 7 месяцев назад

Great video, first time viewer. I liked your production quality and how you went over the build and emphasized safety when appropriate.

@tedhaas8440 Год назад

Looks great. The only problem with the insulating packaging you installed, is tho it insulates currents well, it also locks in the heat dissipation from each battery, thereby creating a tremendous amount of heat over time, which I'm sure you know how that effects longevity of the cells and changes in voltage output. Instead, I suggest coating the exterior of any exposed nickel plating, soldier joint and exposed wire ends with some non-conductive clear enamel paint, then when completely dry, install it into a non-conductive polymer/plastic electrical box, with a cooling fan on one side and a vent with a dust filter on the other side of the box to allow airflow to cooling the ambient air inside the box and to circulate the cooling air around each battery, then be vented out of the box, to help keep them cool and stable.

@00TreadStone 7 месяцев назад

The best thing about a boat is that it keeps water out. The worst thing about a boat is that it keeps the water in. Well said.

@bluestraveler2980 7 месяцев назад

I hope it doesn't rain.

@brankelly1921 5 месяцев назад

@@bluestraveler2980hahaha big time plot hole right here!

@Elduende64 Месяц назад

Wouldn’t it depend on the application and how it’s used, Example: an ebike ridden in winter or rainy weather, versus, a casual bike rider who rides in pleasant or sunny weather. As an amateur bike builder I only ride my ebike build in good weather and my pedal bike in inclement weather.

@stafdehat 2 года назад

Great video. Re: Affordability, it turns out that those 18650 cells can very often be found in old tool/laptop/etc battery packs, and very often, the pack itself is only bad because 1 of the 18650 cells in that pack is bad (parasitic). In those cases, people will throw away the whole pack, and you can dissect it to recover free, healthy (albeit used) 18650 cells. The downside there is that you need to test all your recovered 18650 cells individually, or suffer increased risk of fire/failure. Another youtube channel, "DIY Powerwall", has information on this. Also, tip: You can often use a Flir IR camera to identify which cell in your pack is bad, if/when that happens.

@bytesizedengineering 2 года назад

These are some awesome tips! Thanks for sharing! I've seen lots of videos of people recovering cells from used battery packs and that's a great way to reuse them instead of ending up in a landfill. It does require a lot of testing and making sure everything is balanced. Some of the cells may have lost their capacity over time and so you want to make sure everything is matched up.

@scottbaker9066 8 месяцев назад

I rebuild packs with the ones that test 2.0Ah or more and if you have some that are 2.2Ah spread them out, like 1 in each group of 5. @@bytesizedengineering

@rakkon1 10 месяцев назад

Great editing getting the wels sparks to line up with the tunes. Informative fast and concise. Suscribed thanks!

@Will-of-all-trades 2 года назад

Spot welds on beat! I dig it.

@Dtr146 Год назад

I bought one of those exact same battery welders. Works like a charm once you learn how to use it. I would suggest either attaching the two leads together by the heat shrink or printing a bracket to hold them together because it gets really cumbersome with the leads all loose

@GlenDoer-gq1rs 6 месяцев назад

Name of welder?

@HowTo2do 3 месяца назад

Wow great tutorial on how to make battery pack from 18650 battery cells. Very professional work.

@christianwolf9314 Год назад

Thank you we need more videos like this hats off to you

@marksummers9543 Год назад

That was really fun to watch. Thanks for the info, I think I'll give it a go

@BKMakes 2 года назад

Congrats on the sponsorship…. …and the community loves the support Altium! I know where I’m going for my electrical design now👍🏻

@bytesizedengineering 2 года назад

Thanks! They have been a great sponsor of the channel

@herbivorouscyborg2398 Год назад

Thanks for this video. My ebike battery needs to be replaced and finding a 48v ebike battery with the right form factor and output connection type at a reasonable price point is basically impossible. I took my ebike battery apart and discovered that it is a 13s5p battery made up of NCR18650GA cells. After watching your video, I feel like it is a realistic goal for me to replace the cells rather than paying for a whole new battery/charger/bike-mount combo.

@michaelkress3907 Год назад

I like that does make it look very professional I like the double bridges you got there for your series and parallel connection kind of a two and one good job

@baade6010 9 месяцев назад

270$ homemade vs 340$ store bought. thank me later :D

@emaglott 2 года назад

beautifully done and explained! thanks!

@bytesizedengineering 2 года назад

Thank you so much!

@awaitingthetrumpetcall4529 Год назад

I have wanted to build my own battery. Thanks for posting.

@majmaldcinformation 3 месяца назад

Thank you very much sir I have learned a lot from your video the spot welding method of nickel stick using 18650 cell is very well explained thank you sir

@michaelkress3907 Год назад

Thank you appreciate the information DIY circuit boards convene all in one approach to that that’s really good thanks And I like the strip used for connecting those in the series parallel very nice.. I missed how many amps charge you’re battery balancer is limited to as well as how much the battery balancer is limit to on continuous output I know you can charge those batteries quite hard as well as you can discharge him rather hard also easily pulling out more than 20 A and easy to charge them at close to 10 A Each

@TheEtbetween 5 месяцев назад

Thanks excellent, just bought a spot welding

@craigrmeyer 8 месяцев назад

Thank you for sharing this. I know this is pretty basic stuff -- no Nobel Prizes here -- but still I appreciate being shown what this looks like in the flesh.

@nixsy9 Год назад

thanks for making its really cool, like for your stuff

@cmalc8 Год назад

Safer design is, after checking all the batteries for same voltage and grouped internal resistance, solder suitable fuse wire to thicker nickel strip bus bar and to thinner small squares of nickel, then spot weld the nickel squares to the batteries.

@cherryvlogs7578 Год назад

7:49 i love how you made the tacs sync to the beat

@Keneo1 2 года назад

Soo satisfying that the beat of the song matches up with the ticking of the spot welder

@bytesizedengineering 2 года назад

I spent more time editing that than I would like to admit 😂

@WiredWorkshop 2 года назад

Got here from the ILTMS discord, awesome project, that nickel plate made everything look super clean!

@bytesizedengineering 2 года назад

Thanks! Maker Alliance FTW!

@medeostudios Год назад

Very Interesting thanks

@franknam1 2 года назад

great video! thanks

@bytesizedengineering 2 года назад

Thanks Frank

@Bianchi77 Год назад

Nice info, thanks for sharing :)

@michaelkress3907 Год назад

Sliding an additional piece of heat shrink of the two wires and the connector at the end will help reinforce the wire connections for when you connect and disconnect them it’s best they feel as one solid piece

@patrickmckowen2999 Год назад

Good build 👍 20% is not a lot of savings unless you are getting much better cells and BMS. Cheers

@TiredOldMann Год назад

Agreed. I can repair a 20 volt B&D 1.5 AH to 2.1 AH for $ 8.50 . Cheapest no name is $16 each if you buy two of them. Cost Matters !

@wizardmaster6639 Год назад

Great job - professional and secure when you make it yourself - simply because you know what kind of batteries you used and what is the TRUE capacity of each, not the claimed one by someone in China :) in voltage or in AH.

@TechnologyGuru0000 Месяц назад

Very nice job done

@taylormoore4991 Месяц назад

Great video! God bless!

@troytaylor1913 9 месяцев назад

Cool. I want to pack the bottom of a sealed plastic toolbox with 18650s but use a different BMS. It's got to keep my work campsite powered for a week. I figure I can weld plastic dividers using the same kind of plastic in places like for a true wave inverter, and a solar charge controller. I sell 18650 batteries for electronics that I sell so I have a trusted vendor I buy from. I have built a lot of small power banks for cell phones but this will be the first toolbox-sized 2000-watt bank. I also have a diesel heater that it has to power.

@michaelkress3907 Год назад

You may point out that grid that you using is not just for holding him but spacing him to allow heat dissipation

@user-ot1dv6ri4f Год назад

I understand how you're putting them in series but the way you use that nickel strip to connect those 4 in parallel after that boggles the mind, it just looks like they are all connected together ??

@michaelkress3907 Год назад

Hi current Mosfet transistors are really expensive with a resistance of .012 ohms between the source in the drain Very little heat is generated but a good heat sink is always recommended

@dgb5820 2 года назад

Great video

@GlaucusBlue 2 года назад

good work, my only advice is to cover the cells you aren't actively working on with Kapton or something else. Coming from experience, it only takes a single drop of something metallic too short. that looks like the exact same spot welder I have, which has been working great for years, albeit it is slow as leads heat up fast.

@bytesizedengineering 2 года назад

Even though I was being extremely cautious, I was unwinding some solder from the spool and it shorted out on some of the contacts. I didn't get it on camera unfortunately. That's a good suggestion to cover the other cells with tape.

@mrmillmill Год назад

Is it best practice to use fully charged batteries or charged at certain percentage? Also, what is best practice for margin of charge difference between cells before placed in battery pack?

@carlotagliabue437 5 месяцев назад

Would you suggest using a 3d printed case for the battery pack that holds everything neatly, or is it better to go with heat shrink option? Beyond thermal compatibility of the plastic used, do you see any downsides or warnings?

@MYFAVORITECHRISTMAS Год назад

Thank you

@atikabul5895 Год назад

hello dear sir frist thanks for this education video my question is , can we using three of this kind battery parallel together without BMS extra between them ?

@michaelkress3907 Год назад

They make some very nice lithium iron cells

@schmeglyomigy6174 8 месяцев назад

Hi, I am a highschool student and for a fun project I decided to build an electric pit bike, as well as building a custom battery to fit the spacing required. I custom built a 52v 28.8ah (14s12p) battery with samsung cells and before I put the bms (50a 14s Daly BMS) on, I tested the pack with a voltmeter and it read around 58.6 volts, which was perfect. However, when I soldered the bms wires on, and put on the connector, it read 14.5 volts. That was around a month ago, and now when I test it the voltmeter reads around 9.5 volts. I checked all of the bms wires and they were fine, so I don’t understand how I am getting that voltage. I saw online that sometimes a BMS can be “asleep” and that you can wake it up by charging, so I tried that and it didn’t even charge. I am now feeling very frustrated and defeated, because everything went so well until the BMS part. Everything in terms of the nickel strips and batteries is good, but it is just something with the BMS. I wasn’t able to get a very good solder on the main positive wire, so that could be the issue. This is all for an electric pit bike project that I’m doing, and I just feel very defeated now, which is why I’m seeking external help. Sorry for the very long email, but this is just the problem that I am facing. Do you know a possible fix or any way I can contact you for you to provide further help. Thanks in advance.

@Cactoos 2 года назад

Really nice video, thank you for your work. I realize work itself takes time then cut video and edit it additional time so I do appreciate that, cheers

@bytesizedengineering 2 года назад

I'm so glad that it was helpful for you!

@Michaelajacksonfilms 9 месяцев назад

thank you

@julianandyvonne 2 месяца назад

Great video. Just what I needed. Have you tried repairing a 'broken' battery pack? I have a friend who's wheel has died. It's the same as mine but mine has done more than 10 times the distance! It's battery pack running at 126v. Two of the cells show that they have died in the BMS software. I couldn't find any 'repair' videos. Keep up the good work 👍

@SuperlativeCG Год назад

I totally understand how batteries feel because I'm rarely ever included in things either.

@Grissinen 2 года назад

Nice the cost compare, as you said, it makes sense to buy one because you have to calculate also your time / work / equipment and saving just 20% is not much... Thanks for your video

@bytesizedengineering 2 года назад

If your sole reason is cost, it doesn't make sense for most people to build your own. There are other reasons for building your own, like learning new skills and buying new tools.

@jace_Henderson Год назад

Unless you just love DIYing, yes, it isn’t worth it. I’m personally obsessed with electronics and engineering and DIYing and learning so for me this would make sense.

@rodolfobaliga7577 Год назад

@@bytesizedengineering absolutely u are right bro.

@nohphd Год назад

IMO, while cost is important to me, building the pack gives you a tremendous amount of hands on, practical knowledge while just watching the video and then buying a pre-made pack, not so much. This may not be important today but down the road when you need to troubleshoot and repair the battery pack, the build experience is invaluable. Doubly important post zombie apocalypse!

@kingmanL7309 28 дней назад

Now you can get them from Temu at much lower prices.😂

@Chilllybob 3 месяца назад

What exact welder are you using in this video.Thank you in advance.Also what nickle strips do you recommend for small projects like 8 AA battery packs

@Calthecool 5 месяцев назад

Pretty sure you could cut those strips with the safety scissors we used in kindergarten, those massive ones look a bit overkill 🤣

@tjmethod8623 Год назад

Hey do you make custom battery packs? I'm looking to have 2- 4 cell 14.4 packs running in parallel for 12 volt custom made heated gloves. If not can you recommend someone? I could do it myself but I'm not exactly sure what I need. Thanks

@Crappy.Consumer.Reports Год назад

How long does it take to charge the battery from empty to full? And how would one go about optimizing recharge time?

@xX0IRIDIUM0Xx Год назад

what are the pros and cons of mah vs volts. also battery chemistry such as imr protected

@farzan-22 4 месяца назад

Thank you😸

@farzan-22 3 месяца назад

Do you have to use a BMS board?

@dtvking Год назад

Nice job spot welding those cells. Just a heads up on your next build, you should keep the balance leads all the same length so the resistance to the BMS is equal from each cell. Thanks

@MasterBlaster3545 Год назад

Hi I am collecting the small 3.7v 2.04wh 550 mah batteries from the new throw away vape sticks. I need 182 of them and is it possible to make a 48v battery for an ebike with them? 13 will make the 48v as you know. If I have 18 strips of 13 will I be able to wire them together? I still have a lot to learn how to wire them together properly but just want to know if it is possible to do.

@tristanfloris9970 Год назад

Didn't think about this, thanks for the tip!

@Devonto Год назад

@@MasterBlaster3545 it's possible, but not very practical.

@didikpurwianto9104 Год назад

Thengk you ser...

@pbat118 4 месяца назад

Can u ful the tubular frame with the batterries to add extra power or switch over an even have a dynamo built in like an alternative to recharge them when using the alternative hidden batterries

@jasonlarkin3718 Год назад

Thank you for the video. I am building the same arrangement pack but with SAMSUNG 40T 21700 4000MAH 30A batteries. Would I need to find a BMS with a higher current rating? If so can you recommend one? I see some on Amazon, but all seem to have questionable reviews. Thank you!

@bytesizedengineering Год назад

I think the one I used had a current rating of 20A continuous. It totally depends on what you'll use it for. If you need higher continuous current then you'll need a BMS that can handle more. For my Onewheel build the built in BMS inside the battery pack has a rating of 50A continuous. If you need something like that, you'll just have to do some searching for BMS boards that can handle more current.

@asadek100 2 года назад

Hi, Love your channel. How about building a home-sized plasma waste processor?

@bytesizedengineering 2 года назад

(googles "what is a home sized plasma waste processor?")

@mikehalvorsen4788 2 месяца назад

Hi Zach. What if i wanted to build my battery pack upwards, and not a block? What i mean is i want to hide the batteries in a bike cylinder frame. Hard to explain... Would i have to use wires to connect each of the holders on the way up?

@normanwray1341 2 месяца назад

Hello dear friend I want watch you build that big battery 😊 thanks you sir

@jeffbguarino 11 месяцев назад

I have never made one of these but I just copper plate the batteries with copper sulfate and it only takes a second to make a thin plating of copper and then you can solder wires onto the batteries. So easy to unsolder to remove a bad battery and put another one in.

@BenoneBitencourt 2 года назад

Awesome video dude! About your battery that is 20% expensive which is the vendor and where I can find, I really would like to try your project, but the time and risk make me think about look something more ready to go hahaha! Could you please tell me where I can find a few good manufactures which shipping to Brazil?

@bytesizedengineering 2 года назад

I would just search for lithium ion battery pack and see what you can find

@AbelMata-ng4bl Год назад

Hi, how many 3.7 cells18650 I need to build a 12v 100am or 24v 100ah? thank you

@herbboughner3944 2 года назад

Enjoyed your video,? If I build a pack like you did 48 v and 10 amp could I plug it into my 48 v 10 amp battery on the charging port to obtain the same voltage but longer use with the extra amps.

@Nitecrow314 Год назад

No, you can not safely connect two batteries through the charging port. The wires are way too small, and you would be feeding current the wrong way through the BMS.

@dinacomp Год назад

Man in 15 min video did the job that need at least one day

@jariekstrom95 Год назад

do you have a circuit diagram of all battery connections?

@Keneo1 2 года назад

Other tutorials I saw on this told me not to shorten the bms leads but keep them all the same length, to make the measurements not have to be recalibrated for the different resistances for each cable (which you typically can’t easily do) since the lengths are the same the cable resistance should cancel out for each row, something your setup does not have?

@bytesizedengineering 2 года назад

I'll have to do some more reading about this. I would be shocked if the difference in the length of wire would make a difference in balancing. My guess is it would be negligible.

@jboy6944 Год назад

Hi, I’m an electronics engineer, and I’ve been meaning to build a battery pack. My only concern is sourcing the batteries. Most markets sell at an extremely high price. Do you know any manufactures that source at a reasonable price ?

@trebor1477 10 месяцев назад

Thanks for this video. I understand now how to do 20S6P battery. I will go 6 wide and 20 in length. Samsung 50g 4850mah for my Kaabo mantis. Do you maybe have video with batteries in horizon position?

@jodiezhao 10 месяцев назад

Hi, we are lithium batteries manufacturing, offer great batteries packs via cell matching, professional spotting and qualified assembly, ensure the best quality.

@sahiltamboli9897 Год назад

Can you please upload similar kind of video for pouch cells

@michaelkress3907 Год назад

Also those have high capacity discharge anywhere is from 20 to 32 as much as 50 amp output for a minimum time but sustained output of 20 A

@gordonreason1069 2 месяца назад

very good video .. but what is that blue shhrink wrap stuff called pse .

@downlink00 3 месяца назад

Id like to build a bunch of these little batteries to fit in the trunk (tire well) to power a car audio system. I need 12volt, up to 500 continous amps and as many amp hours as i can fit. Do you know of any reason this wouldnt work?

@mochariefazzmisantoso2508 2 года назад

can you give us the link to buy your spot welder? great video btw!

@bytesizedengineering 2 года назад

Thanks! I just pinned a comment with a link to a spot welder that is similar to mine.

@garrettreynolds2347 2 года назад

Hey, I love the build videos and trying to make my own board. I bought the same vesc as you but it says it can safely do 12s and I'm wondering about your 13s configuration. Forums seem to say say stay away from 13s with this vesc

@bytesizedengineering 2 года назад

Thanks Garrett! Read the datasheet for your vesc and see what the max supply voltage is. A fully charged 13S will be at 54.6V and that may exceed the rating of your vesc. I seem to remember the documentation saying up to 60V. I'll see if I can find a reference for that.

@garrettreynolds2347 2 года назад

@@bytesizedengineering Thanks for the reply, and sorry I should have included that info as it is the same as yours and can handle up to 60V. The forums say that it's too close as there can be spikes. Regenerative braking seems to be a big no no as well if you are this close to the vesc upper limit. I guess I was asking more about your experience with your set up since you have been running it for a while now. I know you aren't doing regenerative braking but otherwise, how has the 13s setup held up with your current config.

@ca7-592 Год назад

In any of these balance applications you are automatically doing regenerative braking...

@Dragon-Slay3r Год назад

Thanks guys that's just a tip off the iceberg

@Markymark.W Месяц назад

I'm looking at making the same battery but I can't find any info on how to charge them. What sort of charger would I need to charge a DIY 18650 battery ? Thanks Mark

@Jay-tr3px Год назад

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? Thanks again!

@michaelgasperik4319 Год назад

The main obstacles are capacity and physical space. A typical, alkaline 9V battery has a capacity of about 300mAh when discharged at 100mA. Which means that 10 in parallel can output 9v at 1 amp. But we need 20A to match the current capacity of the battery that he made. So now we need 200 in parallel just to get to 9V at 20A. But we need around 48V. The closest we can get is 54V (the full charge voltage of his battery is 54.6V). So now we need 6 of these 200 cell packs to series together giving you a total of 1,200 - 9V batteries. 1,200 - 9V batteries will take up a LOT of space, will be very heavy, and very expensive. Not to mention that they are not rechargeable. Going back to the 300mAh capacity at a 100mAh current draw, this large, heavy, expensive, battery pack will last you for about 3 hours of run time before you have to throw it away and start building your next one. (Hey, did you detect any sarcasm in that? Because it was definitely in there. But every bit of the info is accurate)

@Jay-tr3px Год назад

@@michaelgasperik4319 Lol! Thanks man! I appreciate your feedback. Cheers!

@shantanupawar3609 Год назад

Is there any need to cycle charge them? Before assembling in on single pack?

@patriot7633 11 дней назад

Great

@EricCampbellUAV 11 дней назад

one thing i’ll never forget is that people pleasing is no joke

@jjyay2077 4 месяца назад

nice

@Hedgehodge- Год назад

Does your cost include the welder and solder and soldering gun or no

@Vorname_Nachnahme 11 месяцев назад

The individual cells themselves do not have any protection on board. So a bad cell (higher internal resistance) in a parallel line might go under 2,5V if a real current is drown by the load and thus be damaged. And then reloaded with to high current if the load is switched off and the other cells in the parallel line pump their energy into the bad cell, right?

@sentient1640 8 месяцев назад

Can you upload a circuit diagram for the battery pack you have made? I didn't understand the connection among the batteries. Thanks.

@Wouterium 6 месяцев назад

Great vid! I do have one question though, maybe it's a trivial answer but, how would you go about charging these lads?

@bytesizedengineering 6 месяцев назад

That is the whole purpose of the BMS unit. You plug the charging cable into a battery charger

@Wouterium 6 месяцев назад

@@bytesizedengineering So the BMS regulates incoming power from the power outlet, as well as regulating the batteries' health and other stuff? I'm doing some digging into this stuff right now so your reply is much aprpeciated!

@isaganivallesteros5149 10 месяцев назад

Is it safe to use my old BMS that runs 10s4p rated at 10Ah on a pack that will be rated at 14.4Ah? Note my old pack used 40pcs LG rated 2.5Ah. I am planning to replace them with 40pcs Panasonic rated 3.6Ah each. Thanks to or your patience and reply.