I hope you guys enjoyed my How to Build a Lithium Battery tutorial series. If you want to learn even more, I hope you'll consider checking out my Amazon #1 Bestselling book, DIY Lithium Batteries, available in paperback and ebook formats. a.co/iDtWdPX
@Allbbrz
6 жыл бұрын
Yeah, it's great. Question: since you wire 3 batteries in parallel, do you have anything that monitors that particular "cell" and tell you that it went bad ? I am thinking on the bad case that one or more individual cells is going down and the indicator would tell you which so you wouldn't have to disassemble the entire pack and test them all.
@thekaiser4333
6 жыл бұрын
Why would one need a BMS?
@vishalsaini7966
5 жыл бұрын
Brother can we 16 s bms in 15 s cell battery
@agmendoza2830
5 жыл бұрын
@@thekaiser4333 why wouldn't you use one?
@manish4094
5 жыл бұрын
Hey EbikeSchool.com I am using 13cells in series and 18 such series connected in parallels so should I use only one 13s bms aur 18 13s bms in my battery pack?
@donscott6431
3 жыл бұрын
Dude! I love you. Bought all your books, but actually seeing the mechanics behind the building is priceless. I’m a novice w/LI batteries, but after a year of reading, watching and buying a spot welder and 95% pure nickel roll, I’m gonna attempt to build a replacement 48v, 10.5 ah battery for my smallest (grocery-getter) e-scooter.
@kylecensabella7069
Жыл бұрын
Thank you so much man. Now I can finally finish my build. I connected my b- directly to the controller and it didn’t work. Thanks to you I know now that the p- goes to the controller👍🏼
@michaellink6960
4 жыл бұрын
Connect the sense wires and the power wires BEFORE plugging in the sense cable to the BMS. The circuitry that the sense wires connect to contain MOSFETS which are static sensitive. It is also a good idea to use a static wrist strap when installing the BMS for the same reason.
@TheLondonCyclist
4 жыл бұрын
Bro, I've watched all of your videos for this. It's amazingly put together. I never understood the whole buckle strip placement, but now I do. One thing I'm getting my head around are the BMS wires , but I'm sure I'll get it after watching the same video a few times.
@GrantSR
5 жыл бұрын
So, Micah, I hope you've learned to use flux and a higher wattage, higher temperature soldering iron since this video. It's a great video other than the fact that all your connections are "cold." A hotter iron will heat the working area to the proper melting temp of the solder before that heat has a chance to migrate away to the batteries.
@mrd.808
2 жыл бұрын
enjoying your YT videos. I do recommend redoing your older YT videos with the music turned down. Or make one with music and one without music. or maybe I will just hit the cc button. thanks, Boss, keep up the outstanding work!
@monstercolorfunco4391
7 жыл бұрын
awesome guids, the ratings speak for themselves. I didn't see if you cover the heatsink of the BMS, and sometimes for higher power BMS the heatsink would melt the glue... all FETs and heatsinks benefit from capton/clearence/fets can melt nearby plastics/heatsink can be hot.
@pandaexpresso
6 жыл бұрын
I'm an American modding an e-moto in China for fun and this is saving my life.
@BrunoPOWEEER
7 жыл бұрын
FANTASTIC VIDEO mate!!! You're the number #1 ebike educating dude..... LOVE watching your videos, reading your educational articles, your educational battery build kits... man... you rock!! Well done.. great job as usual =]
@quentinrufin4025
6 жыл бұрын
For those who wonder which connectors to use. After trying different type of connectors, I recommend XT60 or XT90. XT90-S is good for powerful batteries.
@angellee713
6 жыл бұрын
thanks for professional advice
@farida7777777
5 жыл бұрын
Thank you very much, was stuck for months with this. My inverter charge and discharge on the same positive and negative, thus -p and -c will use my inverters negative split into two to solder them into the bms. Thanks. GOD bless.
@simengineering9183
Жыл бұрын
You are awesome! been searching videos trying to find a simple and straight to the point explanation, You nailed! Others should learn from you! Short and simple 🤘😃🤘 you just got a new subscriber.
@djmips
7 жыл бұрын
I'd recommend using a liquid flux when soldering.
@Convolutedtubules
3 жыл бұрын
Soldering acid helps also.
@martinhardy5772
6 жыл бұрын
Hi. Great vid again. Just purchased you book and I'm very impressed. I would recommend this book to all. Keep up the good work.
@CabrioDriving
3 жыл бұрын
Super valuable video. You are great at teaching things. Calm, professional and telling all the details like nickel thickness for certain amps. Highly appreciated video series. Maybe you could record something newer for the knowledge and experience you have in 2021? :)
@milodimich16
Жыл бұрын
You are the most honest person and amazing
@johnnykelly8582
7 жыл бұрын
I just want to thank you for making these videos. It really helped me a lot You are awesome.
@komodospider
6 жыл бұрын
Micah thank you for sharing your knowledge with us, it made things a lot clearer for me
@diegooolB
6 жыл бұрын
Great video, and thanks! Quick question.... can I ignore the P- and just use it for charging the pack?
@svleez
5 жыл бұрын
Thank you for sharing, it's a very cool and instructive series of videos. I'd like to know what is the best way to make a 20s24p battery pack for a e-moto I'm building. I know I need look for a 20s BMS, but should I weld the 24 batteries in parallel? Or would it be better to make 20s battery packs with, let's say 12 parallel cells, each one with a BMS, and then connect the battery packs into a larger battery pack. Thank you
@jesusespinosanavarro2025
6 жыл бұрын
Hello and regards from Spain! I have a question regarding the connections for the BMS. I made 3 lines of ten batteries in series (36V) and then connected them in parallel (~10Amp) . Shall I just connect the wires of my BMS to the positive terminals of just one line of batteries? Or shall I make a kind of bridge connection between each individual BMS wire and its corresponding three-cells set? Thank you very much for your effort and instructive videos. You really motivated me to start up my personal projects!
@MultiRafael23
4 жыл бұрын
You need to buy the book good luck..
@JohnDoe-km7ch
4 жыл бұрын
it tooks me 1 minute watching you video to get information i need. thank you.
@anandsingh8987
5 жыл бұрын
PLease update the links as some of them are not working. I am fan and currently working on building battery pack of 50AH, 48v and of 10A. I loved the series as you have covered every aspects.
@pneumaticfx9897
7 жыл бұрын
Love your videos man, always a go to when I'm building a battery. Thanks
@charleswalker8961
7 жыл бұрын
Wow! Thanks for the excellent series and your easy going, very informative way of presenting the information. It is just what I needed to crest the learning curve! Questions: Do you believe these packs can be built without a traditional BMS? Also, who did the backround music in your "episode two"? Thanks, keep up the great work!
@heardandtested
7 жыл бұрын
Am sure u are a pro to solder the balance wires while they are connected to the bms.
@petervaldes197
7 жыл бұрын
Excellent video, answers a lot of questions I have had. I'm brand spankin new to this scene and love your videos!! I do have a question regarding the BMS. You mentioned to use a BMS with a little more amp capacity in order for safety. Would there a be a problem if the amp capacity is far greater than the amp capacity of my battery bank? For example, my battery bank would be approximately 54 amps. Would it be a problem if I were to use a 100 amp BMS (assumming it meets the number of cells of course). Please keep up the videos, they truly are amazing!!
@slinkytreekreeper
6 жыл бұрын
I hate it when channels that beg for your subscription don't even take the time to answer questions. True mark of a douche worth using adblock for.Over rating your current on a BMS is no issue, higher you go, cooler it will run and safer it will be. Using same current as your controller max for BMS max like he did here is not smart.
@Gallzatron
6 жыл бұрын
slinkytreekreeper it's not his job to answer every question. People are lucky that have a very well edited video with a lot of good information. He's not even that big relatively speaking. Give him a break
@Ra-zor
5 жыл бұрын
Dont like having the bms on the pack, after a bms failed on me i have it connected to the charger now instead and just plug the balance lead from the pack in to the bms, and the xt 60 from the pack in to the bms xt60 + and -. This way if the bms fails it does not kill the pack (has happened to me and discharged a parallel section of batteries to 0v, killing the cells). Use an in line 40a fuse to the speed controller as your protection.
@agmendoza2830
5 жыл бұрын
Hello, in the diagram on my BMS from Vruzend the P- is a blue wire, if you look (3:27) the C- is the blue wire.
@herenow2895
4 жыл бұрын
On this BMS, the sense wires are to be fixed to each cell + , but you solder them between the + and -- . If the BMS required that they were to be soldered on the -- end , where would they go ? In the same place ? As you fixed them in between the + and -- of the cells, what determined that they were fixed to the + ? Is it the direction of flow ?
@savvasberdos1828
7 жыл бұрын
Thanks one more. You even show us how to solder nicely.. Is there any way we can check if the BMS has indeed a balancing function? And another question: Is it worth it to find BMSs with temperature sensor? Thanks.
@wesleyoh4033
6 жыл бұрын
May I know what is the real difference between a BMS with negative charge connected to C- and one BMS without the C-? Is either one better than the other or what is the real advantage?
@immortalsofar5314
4 жыл бұрын
Useful hint: Some of the cheaper BMSs (like I can afford) are *rated* for 50A but need the channels reinforcing when you go above 20 (at least they were honest). A layer or two of pre-tinned solar cell ribbon along the power lines in the board will add the extra carrying capacity you need relatively easily and for cheap. It's also really easy to cut into the right shape and size. How much current goes through the sense wires? Those I have are good enough for signals but not for power so I need to know whether or not they need replacing. Any reason you're soldering the negative wires all the way along an already conductive nickel strip?
@denislindesay3731
6 жыл бұрын
Excellent video's, thanks. I am replacing a BMS on my 36v bike battery pack and I have got the same BMS you show in the video. You don't mention wiring a switch. Are they the two connections on the left hand side of the 10 wire connector? If this is correct, shouldn't these connectors be bridged if no switch is used. The existing battery pack switch had small gauge wires to connectors on the BMS.
@yancymu9112
6 жыл бұрын
I gather that solder heat will damage the batteries, so I am wondering why it is OK to use the high temperature glue. From Amazon it would be about 400 degrees Fahrenheit. Can you comment on weather LFP batteries are more or less sensitive to temperature. Thank you for the great videos.
@sherrylewis8780
Жыл бұрын
Thank you! the most important info was right away
@jhonajanerelacion5361
3 жыл бұрын
Hello.... Can i use a 14 gauge copper wire instead of 14 gauge silicone wire for the positive and negative terminal of the battery pack ? thank you for your videos ❤️♥️♥️
@armanddivinagracia2922
3 жыл бұрын
hi Micah, i really love watching you're videos, you explain everything so clearly. i just want to ask about choosing the right BMS for my battery pack. lets say if i'm going to build a 12v 14.4ah (panasonic tesla LDTSL 21700, 3.7 4800mah 10A max 35A) what would be the recommended BMS ampere for this build, will a 3S 25A do?... i'm also trying to find a video on your channel how to calculate the Amps when building a battery pack. because in my example,if i use the tesla battery with a rating of 10A each with a 3P connection would that total 30A and do i need a 30A BMS?
@PeterMilanovski
6 жыл бұрын
I see a lot of people using hot melt glue directly on the pcb.... I was wondering if the glue became conductive over time? I have read on some forums about the same question and all I could find is people who are saying that they have done it forever and never had a problem with it.... VDO, a company that you might have heard of... makes instrument clusters for car's used to use super glue until year's later... the clusters were failing due to super glue becoming conductive and therefore creating a short circuit... it's just a thought but it just might be relevant...
@markcoleman8680
4 жыл бұрын
There seems to be a lot of comments from people connecting the wires on a bms in the wrong order and blowing them up. Is there a specific order that they should be connected and disconnected when removing a BMS?
@emaayan
7 жыл бұрын
for high current battery packs the type of connectors is important, as well as their environment, if your powerpole are gonna be in a close non ventilated area, then the heat may warp the plastic. also about high current, there's not only xt-90 , but also xt-90s hobbyking.com/en_us/xt90-s-anti-spark-connector-2pairs-bag.html which contain a pre-charge component, to hold off the sudden burst of current that could potentially damage the controller. (if you don't have an on/off switch) .
@harryharrison4558
6 жыл бұрын
What if my discharge and charge connectors are the same? Specifically, it is just one XT60 connector.
@electric2wheels802
Жыл бұрын
Yes same
@milodimich16
Жыл бұрын
Only one nation on the entire world's got tougeter no any other one.Very interesting and unique.
@milordas
2 жыл бұрын
if you have controller, you can bypass bms for discharging, then you'll need lower amperage bms and smaller
@petertothRC-FPV
7 жыл бұрын
nice videos.i was hoping i could salvage 2, 48v 6ah bottle style batteries.i dont see any videos with them opened up.i used the throttle to much when i first installed 1000w the front wheel kit.i use a 12ah bat.now and have a 6ah for backup.after i ruined the 2 batteries i mostly use pedal assist so to manage and save my batteries.
@shaneweightman
7 жыл бұрын
Great clearly explained video ,, thanks Shane uk
@pistacheuuuu
6 жыл бұрын
hi, very nice work, i follow your advices and everything go right. It works! The only thing i'm not sure about is the foam. My english is too bad to understand evrything you say. Can you tell me, please, what kind of foam is it and where i can find it. thx
@ThanosSustainable
6 жыл бұрын
If you got a BMS with no B+, you first solder the B- to the battery and then solder the small wires as you like, in series or not, as in your video. What if you have a BMS with B- AND B+? I've read that there's only one proper way to wire such BMS, else you could pop a few MOSFETs while attaching the cables.
@hansmontenegro
3 жыл бұрын
Hello, thanks for all your videos. I have a question why there are Lithium batteries with many exterior wires and other with only two. In my case I have a 6 batteries Lithium. With two thick wires ( black and red) and five small wires ( yellow, blue, red, black, white). What are the function of the 5 wires? Does those batteries has a BMS?
@maxkodiak9591
5 жыл бұрын
I thank you for your video its my license to understand the connections p- c- b- and finish my battery Thank you very much.
@zarpjj
7 жыл бұрын
I plan to build a battery pack with 18650 cells, one 3S5P, to power my LED lamp torch and I will add one BMS on my pack. How do you know when the pack is fully charged when I use one BMS with my pack? I also have TP4056 charger to charge 18650 cells individually; when the cell is fully charged, the LED "CHARGED" turn on. Do you know if some BMS will display the status of the pack "charged" ? Thank you in advance and thank you very much for your video, very helpfull. Jean-Jacques
@kichelis
Ай бұрын
Wondering if you are able to essentially put this pack in series with other packs with each of their own bms all connected to a charger via their respective leads?
@Bowtie41
7 жыл бұрын
Mike, If I build a LiFePO4 pack,does the little chips on top of each cell do they same as a BMS?
@jgc5782
7 жыл бұрын
HI Micah, I love watching all your videos, thanx for all your help. I have a problem... I tried ordering a 48v 13s 30a bms with wiring similar to your bms......but the first set of 11 wires has 1 black, 9 whites and 1 red........the next set of wires has 3 wires, black, white and red .............. the bms its the LH-HP20SA, can you please help. PS: I hope you can now shipp to Canada, it will save me a lot of aches....LOL
@EbikeSchool
7 жыл бұрын
I haven't heard of a wiring scheme like that before. It's common to split the balance wires between two connectors though. Usually they just go in order, with the very first black wire (probably from the group of 11) being -1, the next being +1, and then all continuing until you get to +13, which would be the red wire from the group of three. At least that's my guess, without seeing your BMS. But I'd contact the manufacturer to confirm. In the future, I have BMSs on vruzend.com and I do ship to Canada. If it's just a BMS, it won't be too expensive, as the envelope is small. For bigger things, USPS to Canada gets very expensive.
@igorcabrera8123
10 ай бұрын
Waiting to know how you found the bms replacement
@gerarddupuis6033
4 жыл бұрын
again enjoyed your video , just wondered if when you are soldering wires onto your nickel strips if you are using acid core, rosin core, or just plain solder?
@mappy1944
4 жыл бұрын
Very good video. I just have 1 question. What kind/size of cable do you use to connect BMS B- to my batterypack?
@danielelbaztm3706
4 жыл бұрын
Want kind of charger i need to use for this
@ChaplainDaveSparks
5 жыл бұрын
I'm a bit confused as to what does what. I understand that lithium batteries need constant current / constant voltage charging. When you use a BMS, do you also need a "lithium charger" to do that, or is that functionality contained in the BMS, so that a simple regulated power supply + BMS is sufficient?
@masonmason4154
3 жыл бұрын
I’m new to this process and was wondering about the BMS system. Does it matter which BMS system you use for which ebike? If i build a battery like you with a new BMS- Will all of it work on any ebike or do I need to do something else also to get it to work?
@avicenadelcastillo988
7 жыл бұрын
hello super cool videos , i have question where can i find 72v or 96v bms ?
@borealisgelidus4427
4 жыл бұрын
If using LiFePo4 cells on a car starter battery, where do have the BMS-charge /-discharge lines to be connected, because on a motorcar there are two connections only covering charging (from alternator) and discharging (to the starter motor) same time! 🤔
@gregorkaumanns7677
5 жыл бұрын
Hello, the video is perfect. So I decided to build my first battery. Now the BMS has been delivered. There is only the B- and C- but the P- is missing.Where do I have to connect my Discharge - to? Is it the C- for both? Next question: It is a 16S Battery with 17 thin wires. Started with a black, next red, next black, next red... at the end there are two red wires. Will the first black wire go to first battery -? Greetings from Germany, Gregor.
@vanmasterflash7153
5 жыл бұрын
Crickets...I'd like to know as well
@gregorkaumanns7677
5 жыл бұрын
@@vanmasterflash7153 because nobody anweres I will try the following: Maybe everything explodes or it will work. I will connect B- with Battery 1- I will connect C- with Charge/Discharge- connector The first black thin wire to Battery 1- the first red thin wire to the connection between Battery 1+ and 1-... Last battery(16)+ to the last red thin wire and Charge/Discharge+
@szakbak
5 жыл бұрын
are bms supposed get hot??mine gets real hot i am afraid to leave it plugged in??as it melts the hot glue??polarity is good seams to not work ass its drains the battery from 16.8volt to 13.5 volt thanks for your videos
@Ibamba7
7 жыл бұрын
I received the book as you promised thank very much! Can you please tell me the name of the liquid glue you used to glue the bms to the foam?
@EbikeSchool
7 жыл бұрын
It is just generic, hot melt glue
@Ibamba7
7 жыл бұрын
Thanks
@mikelilley7136
4 жыл бұрын
micah nice video i think i understand what to do but in a previous video you talked about putting 2 bms onto the battery pack in case one failed if so do you connect both identically and if one failed would the other seamlessly take over?
@emreiris114
5 жыл бұрын
It was so informative video But I still have one question that I cant find the answer yet ,lets suppose we have 3S3P battery pack do we have to connect cables between every individual cells or is there any other way to balance all cells at once?
@atorresmiguez
7 жыл бұрын
Hello, thanks for your videos, they are very useful. I want to put a switch in the box of my 10s battery pack, can you give me any advice? sorry for my english and thanks in advance.
@nealwoodburn7510
6 жыл бұрын
Great Series man, I just have a few questions I have Prismatic cells, what would be the best way to connect a 36V battery pack with the prismatic cells, as I am building an E-Bike as well. I am also developing my own BMS, do you have any insight you could share regarding building your own?
@Grind671
6 жыл бұрын
How do I wire it to charge and discharge through a single connector?
@serdardemirci3996
7 жыл бұрын
When the battery is fully charged the charger stops the charge process. Does the charger stop it or is it the BMS in the battery that stops it?
@Gallardo6669
5 жыл бұрын
Seems to be a gr8 video but all additional terminals or wires don't really make sense until explained in detail. Example is there an overload protect included and how does it work? Why more then 1 wire from the bms to the same terminal??
@cliffthompson4149
2 жыл бұрын
Hey man I really appreciate your information and making this video but I have a little problem I'm getting power from my battery pack but it is not delivering to my bike. I have two other batteries and they work great and I've troubleshot everything. Do you have any suggestions or what am I look for?
@causwayspeedway
7 жыл бұрын
The 48V BMS you had had 4+11 prongs for 15 total,minus 1 prong for ground.So this is for 14 cell battery,right?I am still trying to wrap my head around this,thanks.
@W-H1U
6 жыл бұрын
i watched a video were a guy put the discharge connector negative on the c- instead of P- and it still worked...i am so confused!
@darrenschroll6461
5 жыл бұрын
Where did you buy the cells from? I seem to get nothing but fakes on eBay..
@martinglaze796
7 жыл бұрын
I enjoy your videos, but you leave out one important item.Where do you buy the BMS from? I can't seem to find them. Thank you.
@EbikeSchool
7 жыл бұрын
If you're in the US then you can get some from vruzend.com. If you're outside the US, try aliexpress. I have some links in the description to this video.
@ioanniskontos9439
4 жыл бұрын
Hello, nice video! Thank you! I want to ask if the current i am looking for is the total amperes of battery or the amperes my circuit needs! Oh, and also what power supply do i need to connect to a bms? Thank you for your responce!
@scottyscotty7785
7 жыл бұрын
Great video, when is the next one? :D
@EbikeSchool
7 жыл бұрын
Probably in a week.
@dougcullen9591
7 жыл бұрын
I have a 13s BMS board that has a B- port and two P- ports. Do i need to use both P- ports ? I'd like to use the same XT60 battery lead for charging and discharging. Thanks for these great videos !
@EbikeSchool
7 жыл бұрын
That's interesting, I haven't seen two P- ports before. Can you look at the traces on the board to see if they are electrically connected? I'm guessing that's just so that you can solder to both and double current carrying capacity (as long as it stays within the limits that the BMS is rated for). I can't be positive though.
@jeanterine4712
3 жыл бұрын
Very clear video thanks
@marcello_187
6 жыл бұрын
Is it possible to use the BMS just for charging? So not connecting the p- on the bms but directly to the connector? Would be cheaper because you can use a lower amp bms then... Or is this not recommended?
@EbikeSchool
6 жыл бұрын
This is possible. Just be warned that you lose the discharge protection this way. So you can accidentally discharge your pack too much since the BMS can't protect it by cutting discharge. If you are careful and monitor pack voltage though, it shouldn't be a problem.
@Ibamba7
7 жыл бұрын
Will 60/40 Electrical Rosin Core Solder AM31604 work fine to solder a battery pack and not melt fast? Melting temp is 374 Fahrenheit
@bestelectronicmusicfromnew5189
5 жыл бұрын
where did the thermistor go to? glued to the BMS cover or a battery?
@ggss1176
6 жыл бұрын
thanks very helpful and informative
@florinadrian5174
4 жыл бұрын
I have a 36V 11Ah Lithium bike battery and I accidentally shorted it. None of the cells are damaged but it seems the BMS 10s is. It does have a temperature sensor (twin black wire joined at the end in a resin cover). I wonder if there could have a fuse in the BMS and how to find it... Also, compared to the components shown in your video there are two more wires connecting the on/off button of the battery. Are they special or all BMS have them? Finally, since you said that I need to know the amperage to know what BMS I need, my 5x10 cells are 2200mA and 37V and my bike engine is 500w. Is that enough to calculate the needed BMS amperage?
@patprop74
Жыл бұрын
so the discharge port is basically the power out that goes to the bike's controller?
@MushroomKingdoom
6 жыл бұрын
Okay i saw the entire video. what is BMS device and what does it do? why is that necesary?
@cubiq1
5 жыл бұрын
Hi Micah, thanks for the video! How well does that 10S BMS balance the cells? There is some speculation online that the PCB is missing a dual-diode (if you look closely at the back cell 1 channel, you'll see the empty PCB pads). Have you noticed any issues?
@Thechist781
2 жыл бұрын
Why you solder main positive and negative all along the four cells. Wouldn’t it work just soldering those wires to any spot in thar nickel since they are already connected ?
@technicalnj2337
5 жыл бұрын
Nice work bro
@mohammeduzair694
5 жыл бұрын
hey micah , could you please make a video on building a 24v battery pack , thanking you .
@LEXICOGRAFFER
3 жыл бұрын
What would have floated my boat would have been a demonstration of the balance wiring placement sequence when you have 1 extra wire than the cells. Your book didn't make this clear enough either.
@sherine4583
4 жыл бұрын
Hello, thank you for your series of 5 video, I learned a lot thanks to you thank you, parcontre I am looking for a bms on aliexpress at a reasonable price but I find it hard to find, I think I need a bms 5 s in 160 amps, because I have 50 cells LGgbmh11865 3,7v 3200mah and would like to make a 36V battery, if you could advise me a bms please thank you
@quentinrufin4025
7 жыл бұрын
Thank you for your videos. I heard that charging at 4.05V triple the battery life. Question: Do BMS refuse to charge batteries bellow 4.2V Per Cell? In other words, is it possible to charge cells from 3.9V to 4.2V per cell?
@quentinrufin4025
7 жыл бұрын
His Answer: If you have a charger that can charge from 4.05V per cell (which would be 56.7V for a 14s pack) then that will still work fine with a pack built with this BMS, except that the balance function won’t kick in. This is the same as almost every battery pack built with a standard BMS. For that reason, people who undercharge batteries with BMSs in order to extend the lifetime of the battery are recommended to occasionally charge to full voltage (4.2V) per cell so that the BMS has a chance to kick in and balance the cells. If you are using good quality cells, this can be as little as once or twice a month. For cheap cells, they will become unbalanced faster, and may require more frequent full charges to enable balancing with a BMS.
@myozone
7 жыл бұрын
There seems to be a lot of different types of BMS's (charge and discharge) , could you explain this and how they work - I have an electronics background
@nfvisuals
7 жыл бұрын
A big hello from Portugal!! I have a project that I want to develop soon which is a quad e-bike on which I want to use a big 5kw BLDC motor that I own. To power this motor I already have a RoboteQ 48v motor controller. My question is about the right about of cells per pack (S) to get the right safe voltage as according to the motor controller data sheet, the absolute maximum voltage that it can receive is 50 volts.. I know that the standard for 48v are 13 cells but it means 54.6v when the cells are fully charged. Do I have to go for a 12 cells setup/BMS?
@LierreNarcissus
6 жыл бұрын
Do you have a video on wiring the battery packs in parallel? To power a 72 or 96v system?
@frederickschulze8014
4 жыл бұрын
The p- and c- ports on my bms are right next to each other and the metal contacts on the board actually touch. Does this imply that while I could connect two wires to it, I'm essentially using a shared c- and p- port? Based on this, it seems like it would be useless to add a second charge cable and instead just have a single discharge/charge connector.
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