Good video , Kim......But Daniel is right! Your kit is only good for starting a50cc scooter, max 100cc , but even in this case your nickel strips are really too thin. Please weld 2 strips or more , it's the minimum! A simple 400CC needs 80/100A for start...with your pack the strips are dead. And connect the white balance switch on the BMS only AFTER soldering the balance wires + control with voltmeter : if you make a mistake the BMS will suffer. Well , your pack works, but perhaps not for a long time...The best would be 4x2 cells in // to avoid maximal use of Amps per cell for every start (really not good for lifetime). For big motors (750cc and more) 4x3 cells in // are necessary.
I've built this 5 months ago using 8x 26650 3.2V 3800mAH, total of 7.6AH coupled with 16V 83F supercapacitor, but now it seem like it doesn't hold charge for long anymore. Any suggestion why it dropped?
@@kimtinal9353 thanks for the fast reply, I'll post the result again when I have checked them. I also use a cheap standard BMS for LiFePO4 not sure if that BMS failed. I also want to check the cables and relay for power leakage. Is charging it with a 15V 30A adaptor would kill the battery? I have charge them several times with that and I think the problem started after I did that. Now I'm turning down the adaptor voltage to 14.4V for charging.
@@rx6910 30A charging current is too much for 7.6Ah battery, my friend. as i know for lifepo4 battery you better charge it at 0.5C if it was in box so the battery will not heat up. 0.5C mean 3.8A charging current for your battery. it could be charge at 1C but if your bms has temperature sensor protection. other wise i don't think your BMS could handle 30A charging current or not. may be BMS could broken .
@@kimtinal9353 I better order a new and better BMS then, after I checked the battery individually. I use a 30A CCTV box adaptor for charging, so I guess I'll need to buy a suitable charger also. Any suggestion of a good LiFePO4 battery pack charger? I don't know any LiFePO4 charger. Anyway thank you so much for the reply and info.
for charger i don't have any brand cause most product that is use are China brand. but the work well if you pick the right one that suitable to your battery. for your battery 7.6Ah you should looking for 3A charger.
13.8v is still higher then the battery rated voltage. 1 lifepo4 cell is about 3.2v then 4 in series it would be 12.4V, the bms max voltage is about 14.6V, so the battery will never over charge. 13.8v for lifepo4 is about full, and good for starting motorcycle engine.
No way I'm gonna used this cheap chinese batteries...lithium battery are notorious on thermal runaway...dangerous on wet situations...but if you are achmed fanatics build one for yourself...I'll stick to factory installed battery for safety concern
So you need this cell type 16 cells. You connect it 4 in parallel and those 4 parallels in series. 4 parallel to get 24Ah and 4 in series to get 12.6V. You may need at least 100A continuous current BMS for this battery, i recommend 200A BMS.
Hi KIM Tinal thank you for the video. Before buying a 4s 10A BMS card and IRF32650 cells for my moto, I was looking for to ensure that I did right choice. Now I'm quite confused. May you explain why should I use 80A instead 10A for 6Ah batteries?
because of starting current of the motor starter. even if your battery is 6Ah, but it doesn't mean that we use only 6A or 10A. the main function of the battery in motorcycle is to start the engine. and the starting is very high at the first second that we start it could take 5 to 10 time to its nominal current. and that why we need high current bms to handle this application.
Good video , Kim......But Daniel is right! Your kit is only good for starting a50cc scooter, max 100cc , but even in this case your nickel strips are really too thin. Please weld 2 strips or more , it's the minimum! A simple 400CC needs 80/100A for start...with your pack the strips are dead. And connect the white balance switch on the BMS only AFTER soldering the balance wires + control with voltmeter : if you make a mistake the BMS will suffer. Well , your pack works, but perhaps not for a long time...The best would be 4x2 cells in // to avoid maximal use of Amps per cell in your pack. For big motors (750cc and more) 4x3 cells in // are necessary.
Not a good idea. These batteries are 1c rated only so u can maximum draw 6amp safely and a bike starter motor pulls like 50 to 70amps. And if the engine is larger than 200cc it can be upto 100amp. For few seconds .
I watched a video and the guy said that the alternator may blow up the BMS circuit, any problem with yours for using it for a year? What if it is a sport bike, 1000cc, the constant high rpm on the bike will cause the alternator to keep working, will this give higher chance of blowing up BMS and other things?
Hello Kim, Can I get supplier details of this battery spares? I am an small scale battery manufacturer cum distributor from India. It would be helpful if you could provide me with references.
it is high surge current bms, this bms is designed for starting the engine, seller claim. continuous current is 40A and pulse current is up to 120A for 4 minutes.
Daniel Doss. Hi I have assembled 4 cells of Liefpo4 batteries to get 12V for my activa scooter with a 10A BMS. Now every thing is fine including charging voltages of individual cell voltage, but the BMS is getting hot very much. The Liefpo4 BMS used is 10Amps capacity. kindly help me to solve.
the supply power in is 16V but the charging voltage for the battery is 14.6V if every cell reach 3.65V but we never get that perfect balance. and after any cell reach 3.65V the BMS will cut off to protect charged cell then the whole battery voltage will drop between 13.5V to 14V depending on battery chemical combine.
sorry for late reply, better not use the LA battery parameter to find the LiFePO4 to replace it cause we will use it to start the engine so the better parameter is the engine volume or the starting current of the starter is much better. you may check @christine DEMARET comment bellow: christine DEMARET Good video , Kim......But Daniel is right! Your kit is only good for starting a50cc scooter, max 100cc , but even in this case your nickel strips are really too thin. Please weld 2 strips or more , it's the minimum! A simple 400CC needs 80/100A for start...with your pack the strips are dead. And connect the white balance switch on the BMS only AFTER soldering the balance wires + control with voltmeter : if you make a mistake the BMS will suffer. Well , your pack works, but perhaps not for a long time...The best would be 4x2 cells in // to avoid maximal use of Amps per cell for every start (really not good for lifetime). For big motors (750cc and more) 4x3 cells in // are necessary.
Good video , Kim......But Daniel is right! Your kit is only good for starting a50cc scooter, max 100cc , but even in this case your nickel strips are really too thin. Please weld 2 strips or more , it's the minimum! A simple 400CC needs 80/100A for start...with your pack the strips are dead.
And connect the white balance switch on the BMS only AFTER soldering the balance wires + control with voltmeter : if you make a mistake the BMS will suffer.
Well , your pack works, but perhaps not for a long time...The best would be 4x2 cells in // to avoid maximal use of Amps per cell for every start (really not good for lifetime). For big motors (750cc and more) 4x3 cells in // are necessary.
thank you so much for your comment :)
I've built this 5 months ago using 8x 26650 3.2V 3800mAH, total of 7.6AH coupled with 16V 83F supercapacitor, but now it seem like it doesn't hold charge for long anymore. Any suggestion why it dropped?
please check the each cell voltage. unbalance cell hold less capacity
@@kimtinal9353 thanks for the fast reply, I'll post the result again when I have checked them. I also use a cheap standard BMS for LiFePO4 not sure if that BMS failed. I also want to check the cables and relay for power leakage. Is charging it with a 15V 30A adaptor would kill the battery? I have charge them several times with that and I think the problem started after I did that. Now I'm turning down the adaptor voltage to 14.4V for charging.
@@rx6910 30A charging current is too much for 7.6Ah battery, my friend. as i know for lifepo4 battery you better charge it at 0.5C if it was in box so the battery will not heat up. 0.5C mean 3.8A charging current for your battery. it could be charge at 1C but if your bms has temperature sensor protection. other wise i don't think your BMS could handle 30A charging current or not. may be BMS could broken .
@@kimtinal9353 I better order a new and better BMS then, after I checked the battery individually. I use a 30A CCTV box adaptor for charging, so I guess I'll need to buy a suitable charger also. Any suggestion of a good LiFePO4 battery pack charger? I don't know any LiFePO4 charger. Anyway thank you so much for the reply and info.
for charger i don't have any brand cause most product that is use are China brand. but the work well if you pick the right one that suitable to your battery. for your battery 7.6Ah you should looking for 3A charger.
sir ok lng po ba if 5 32650 gamitin ko???ung 4 eh series tapos ung pang lima is parallel,wala po ba problema un
Sir pwede po magpagawa exaclty like this 6amp for 150cc
gagawa ako neto for my nmax....
BMS not support .... BMS LiFePO4 3,2v ,,, BMS 3,7v for Li-ion... 😄😄
Charging in 16V is seems to be higher and in motorcycle the charging voltage is max 13.8v is it suitable to motorcycle
13.8v is still higher then the battery rated voltage.
1 lifepo4 cell is about 3.2v then 4 in series it would be 12.4V, the bms max voltage is about 14.6V, so the battery will never over charge. 13.8v for lifepo4 is about full, and good for starting motorcycle engine.
@@kimtinal9353 posible to use if only battery without BMS? For a 115cc motor cycle use only?
Lifepo4 battery without BMS is not recommended. It is to dangerous to use.
Behold...Achmed Lithium Battery...guaranteed to make you explode with laughter...
No way I'm gonna used this cheap chinese batteries...lithium battery are notorious on thermal runaway...dangerous on wet situations...but if you are achmed fanatics build one for yourself...I'll stick to factory installed battery for safety concern
What if theres no bms.. it possible?
not recommend to use Li Battery without BMS. some cell make exceed voltage and cause explode
I need one for my car...I now use 18Ah AGM motorcycle battery and want to go smaller/lighter. I dont need more than about 25Ah....what would you do?
So you need this cell type 16 cells. You connect it 4 in parallel and those 4 parallels in series. 4 parallel to get 24Ah and 4 in series to get 12.6V. You may need at least 100A continuous current BMS for this battery, i recommend 200A BMS.
@@kimtinal9353 ...thanks :)
Wow. Great experiment! Look like you’re a physics testing his new formular :). But, does it really work with motorbikes? And how long?
Yes, 100% work, this type of battery could work at least 4 years
KIM Tinal Wow! So you could put it on sale or give it away to poor ppl :)
Lifepo4 bat can last up to 10 yrs life cycle
Y cuando lo probaras en una motocicleta ?🤔🤔,ese bms es muy sobredimensionado, una motocicleta no maneja tanto amperaje 🤔🤔
Hi KIM Tinal thank you for the video. Before buying a 4s 10A BMS card and IRF32650 cells for my moto, I was looking for to ensure that I did right choice. Now I'm quite confused. May you explain why should I use 80A instead 10A for 6Ah batteries?
because of starting current of the motor starter. even if your battery is 6Ah, but it doesn't mean that we use only 6A or 10A. the main function of the battery in motorcycle is to start the engine. and the starting is very high at the first second that we start it could take 5 to 10 time to its nominal current. and that why we need high current bms to handle this application.
@@kimtinal9353wrong you need higher than starter motor Power current Bms or BMS module will damaged
It will not self start motorvbike my challenge
Use in activa battery life can go to 2 yrs or max?
Pano kung ngkaroon ng grounded ung motor dba msusunog ung battery
paandarin mo sa motor, tingin ko hindi mo paandar ang motor, pakita mo
SIR ANONG BMS YAN PWEDE B MAKUHA KUNG ANO SPECS O SAANG SHOP MO NA NABILI SA SHOPEE
just want to see, how do you start motorcycle with this 30-40A peak battery :) and 10A capable nickel strips...
installing the battery to the motocycle
th-cam.com/video/eNv6DcilFNU/w-d-xo.html
Good video , Kim......But Daniel is right! Your kit is only good for starting a50cc scooter, max 100cc , but even in this case your nickel strips are really too thin. Please weld 2 strips or more , it's the minimum! A simple 400CC needs 80/100A for start...with your pack the strips are dead.
And connect the white balance switch on the BMS only AFTER soldering the balance wires + control with voltmeter : if you make a mistake the BMS will suffer.
Well , your pack works, but perhaps not for a long time...The best would be 4x2 cells in // to avoid maximal use of Amps per cell in your pack. For big motors (750cc and more) 4x3 cells in // are necessary.
Hello. Ask lng po anong brand ng bms ang gamit? mrn b s shoppee or lazada? Ksi mrn s shoppee 100a pro dk sure kung kya mg start ng motor e. Thank you
English please
Boss pwede ba pagawa sayo? Follow Kita sa fb..
BMS how many A are used?
How many amp BMS module ?
Sorry for my dumb question .
This battery is rated 3.2v 6ah piece .
Wire in series 12v 22ah.
Am i rite ? Thanks 🥰 can i get 22ah out of the battery ?
no, when you connect them in series the voltage is added not capacity. so the battery get 12V and 6ah.
Thanks for helping . 😻😻
Hello po anong mga components ang ginamit mo po kung pwede paki bigyan ng list pss🥺😁
wanna know about tools or battery accessory?
Not a good idea. These batteries are 1c rated only so u can maximum draw 6amp safely and a bike starter motor pulls like 50 to 70amps. And if the engine is larger than 200cc it can be upto 100amp. For few seconds .
Oh, it's good for sharing how to prepare battery and make them balanced before being used!
Thanks so much for sharing this activity 😊❤️💗❤️❤️💗😊🙏🙏
Thanks for visiting
nice video..learn a lot..tnxs
Technology I like
лайк за музыку респектос
hahaha really?
I watched a video and the guy said that the alternator may blow up the BMS circuit, any problem with yours for using it for a year? What if it is a sport bike, 1000cc, the constant high rpm on the bike will cause the alternator to keep working, will this give higher chance of blowing up BMS and other things?
Will this setup work for a 350 or 500 cc motorbike ??
If not , can you advise me on how much pulse Amp Should be for the BMS.
Hello Kim, Can I get supplier details of this battery spares? I am an small scale battery manufacturer cum distributor from India. It would be helpful if you could provide me with references.
Brilliant DIY! Absolutely brilliant!! Keep it up buddy!!
Pwdi b ako mag pagawa ng ganyan sayo, bayaran ko nalang sayo
gagawa ako neto for my nmax...
Great job...... Which bms he has to do for 100 cc scooty and should also be self star.. Ples reply
What kind of bms did you use and how much amps did you use of bms?
it is high surge current bms, this bms is designed for starting the engine, seller claim. continuous current is 40A and pulse current is up to 120A for 4 minutes.
@@kimtinal9353 hi do you have a link for the BMS where I can purchase. Cheers
Sir how can I order BMS..I'm in the Saudi.
Order online, i used to order from Aliexpress
@@kimtinal9353 how? Procedure...please
@@pinleonero6263 th-cam.com/video/OtIyi84sP5s/w-d-xo.html
Sir puede pagawa then bill me
hahah my brother already take it.
Pwede po ako pagawa sa yamaha xt225 ko? How much po?
@@renolbarcebal9564 gagawa ako neto for my nmax...
Daniel Doss.
Hi I have assembled 4 cells of Liefpo4 batteries to get 12V for my activa scooter with a 10A BMS. Now every thing is fine including charging voltages of individual cell voltage, but the BMS is getting hot very much. The Liefpo4 BMS used is 10Amps capacity.
kindly help me to solve.
Get a BMS with atleast 100 A capacity
hello teacher
Hello
Good day sir.
Yung C- & P- ng bms ay pinagsama nyo yung wire tama po ba?
yes it is correct. this BMS is Common P- and B- version
Ah ok. Iba po siguro yung BMS nyo sir?
Yung BMS na gamit ko kasi ay may C- para sa negative terminal po ng charger. P- para naman po sa output ng load
@@drpc1341 Yes my friend your bms may be the separate type. i never use this type before.
in this case, will you recommend using an active balancer? 1.2A or 5A?
Sir meron po a ginawa apat cxa with bms..pag pushstart ko ng motor nag cutoff po cxa agad..ano po kya nagandang gawin d2..slamat s sagot
dapat 100A BMS
idol pd mag ask? may 8 na battery po ako dito 18650 1800mAh lahat tapos 4s bms okay napo b un sa single motor?
dapat 9 na 18650 - naka series at 4s 100A BMS
price kya h iska
full 16.0v but meter test 13.6v ?
the supply power in is 16V but the charging voltage for the battery is 14.6V if every cell reach 3.65V but we never get that perfect balance. and after any cell reach 3.65V the BMS will cut off to protect charged cell then the whole battery voltage will drop between 13.5V to 14V depending on battery chemical combine.
@@kimtinal9353 thank you
sir may binibenta ka nito?
gagawa ako neto for my nmax
What do you recommend setup for me on my motorbike I am using 12V 9Ah battery LA, want to replace it with LiFePo4 with BMS also
sorry for late reply, better not use the LA battery parameter to find the LiFePO4 to replace it cause we will use it to start the engine so the better parameter is the engine volume or the starting current of the starter is much better. you may check @christine DEMARET comment bellow:
christine DEMARET
Good video , Kim......But Daniel is right! Your kit is only good for starting a50cc scooter, max 100cc , but even in this case your nickel strips are really too thin. Please weld 2 strips or more , it's the minimum! A simple 400CC needs 80/100A for start...with your pack the strips are dead.
And connect the white balance switch on the BMS only AFTER soldering the balance wires + control with voltmeter : if you make a mistake the BMS will suffer.
Well , your pack works, but perhaps not for a long time...The best would be 4x2 cells in // to avoid maximal use of Amps per cell for every start (really not good for lifetime). For big motors (750cc and more) 4x3 cells in // are necessary.
It's okay to use 20A BMS in 150cc motorcycle without push start?