QUICK 36V EBIKE BATTERY
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- čas přidán 29. 12. 2020
- I throw together a quick 4P 10S ebike battery for my wife's ebike.
Link to Spot Welder. They sell out so i have provided multiple links!
www.banggood.com/custlink/Dmm...
www.banggood.com/custlink/GmD...
s.click.aliexpress.com/e/_AcpEUf
s.click.aliexpress.com/e/_AOvbd5
s.click.aliexpress.com/e/_AphP7t
Link to 80C battery
amzn.to/3cOIADl
Link to 75C battery on Banggood
www.banggood.com/custlink/3G3... - Věda a technologie
Great video, thank for showing the process! What sort of charging board/BMS do you use for such a battery pack?
I usually use Daly BMS. Good brand, fair price
How do you charge the battery, I see the discharge cables connected. However, how do you charge it. Ie, where are the charge wires?
How do you go about testing the cells? Is it enough to balance charge them before installing the bms or is more involved testing needed?
When you aren't sure about the quality of the 18650 you can use testers that cycle the battery and check capacity. If you dont have a tester charge them full and let them sit for a week. If the voltage stays the same the battery is fine and not self discharging. If the voltage drops, don't use it, it's self discharging and damaged inside.
I was about to take apart someone electric scooter for a 36vbattery, now Ill just make one.
U can put heatsink on this spot welder , or active fan.
Maybe. Have to be careful not to short out traces with hyer sink. I just used it on 20% power and it made it pretty fine
Super explain thank you sir 🙏
Could the same configuration work with 6 batteries or does it have to be connected differently? Trying to get more mah. So would it be called 6p 10s?
Of course. You can add as many parrellel cells as you want just as long as you keep it 10s for 36v. 5p10s or 6p10s or 7p10s ....
Questuons - If 12volts battery is 3S, (4.2 x 3 cells = 12.6) , then 36volts battery should be multiplied by 3 which is 9 cells 37.8volts right? then why is it 10s? Why is extra line added to it?
Another question is - Is it true that you should keep all the balance leads same length? They say if you trim them big or small, the cells will receive uneven amps and get charged unbalanced.
When a 18650 is empty, it's 3v. If you did a 9S battery, empty your battery would get down to 27v which is too low for 36v equipment. The median voltage of a 18650 is 3.6v and battery sizes are calculated using the median voltage. 10s x 3.6v is 36v battery.
Regarding the balance leads. While it is technically true that different length leads will have different resistance and therefore balance, most BMS are not that accurate and use such low balance currents that it won't matter. I cut my balance leads often.
@@stevenc22 , oo good explaination. I didn't think about it before. Thank you 😊
Can the battery be charged directly with the xt60 connection you have on there
Thanks for the informative vid, i am about to build my first one of these
Absolutely. That's often how I charge my batteries.
@@stevenc22 Perfect thanks
@@rgthomson1so how did it go? I’m about to build my first and some info would be helpful
@@visisutomekro8634 All rather easy, main thing is to buy all bits compatible together
Do you do a breakdown of where you get all these parts.
Link to the spot welder in the description. BMS i always use Daly BMS. Cells you can buy from Jag35 or Battery Clearance warehouse.
Thank you
How do you charge the battery, I see the discharge cables connected. However, how do you charge it. Ie, where are the charge wires?
You can charge through the same Cables
What's the amp hours
can i change from 36v to more amps and volige mine is a 36v 8amp 350 battery any help would be great ! THANKS
What do you mean exactly? A battery is rated for it's voltage and max amps. It should not exceed 8 Amps. You can get bigger batteries with higher amps.
I want to make the same 36v battery but 50 cls. Can you please tell me which kind of BMS I need to buy. Thanks
You need a 10s bms with the amp rating of the device you are going to power. 30amp/ 50amp ect. Just search for a Daly 10s 30amp BMS
@@stevenc22 thanks
with out burning up my new ebike ?
What do you use to power the BMS? Would a 42v 1.5A Dc output work for 10S BMS?
You don't power the BMS. The BMS stands for battery management system and it connects to the battery and is self-powered from the battery
What current do you put into the BMS to charge the batterys its connected to.@@stevenc22
i ve got the same spot welder but it burns throught the plates, what voltage - amperage are you using ?
12v at 400amps. I'm using a 3s 5200mah 80c battery. What battery are you using?
@@stevenc22 noticed that in your video, i am trying with a 3s 650mah 100c lipo but it still burns through the strip. Might have bought a low quality strip, i guess
@@RazvanSecu make larger custom needles. It will spread the current over a larger surface area
@@stevenc22 the 1st one i hear thanks for the tips
What's your opinion on cell level fusing do you think it's necessary?
I do cell level fuse on my large power wall build. On an ebike, the rough handling of the battery will likely damage the fuses.
so, common port is ok? bms*
Where do get all the needed parts?
I buy most stuff from AliExpress but it's on Amazon too.
3 years 2 late but the mistake whas the bridge on the negative side
Hi can you give me name of spot welder ?
BIFRC. Check the description
Really enjoy your videos am trying to build a powerwall like yours here in Jamaica and would like to ask you some questions.... may I have an email address where I can reach you.
Sure stevencarstens at gmail
Would you recommend that BMS brand?
I recommend Daly brand BMS.
Ok thanks, also what are the chances of a BMS failing?
@@nevcreating pretty small if you don't constantly push them to their max limit. I've never had one fail.
@@stevenc22 I am building a 10s4p with mj1 10a 3500mah cells what amp BMS do I need? 10a in parallel 40a? or just 10a
@@nevcreating yes your math is correct. Probably get a 50amp BMS just so that you aren't always pushing the BMS to the max.
7s bms for 10s pack? omg
,sir posible to install two BMS in the 24v battery pack?
Yes but why? If one falls and gets stuck open then the second one won't be able to turn off the battery
,because i need to increase the ampher sir..my battery pack is 10.4 ampher.i need about 15 ampher..how to install two BMS sir?thanks
@@christopherbandola6629 yes you can do it. You would just wire them in parallel. But honestly just buying 1 higher amp BMS is cheaper than 2 low amp BMS.
,thanks sir.but my two BMS is only 15amper..its okey to install both for parallel connection to get a 15amper above my battery pack?thanks
Yes 2 x15 amp BMS in parallel can handle 30 amps
How many ah is that?
5x3.2 so around 16ah
@@tobys593 you are right. I miscounted.
How much Was this project in total
Under $100
Wtf
please link buy pcb spot this..thx
www.ebay.com/itm/12V-18650-Battery-Energy-Spot-Welder-PCB-Circuit-Board-DIY-Auto-Spot-Welding-Pen-/264585775348?_trksid=p2349624.m46890.l49292
@@stevenc22 thx
Good Job where did you buy 18650 cells
Batteryhookup.com
www.ebay.com/itm/200-Cells-LG-MH1-3200mAh-10A-Cells-in-5-Aluminum-Cased-Packs-/392887834629?_trksid=p2349624.m46890.l49292
@@stevenc22 how long was run time are these good for gokarts
@@mainesmith2183 high quality cells would work great for a go kart. Run time is over an hour at full load (500w)
U did well but u didn’t show us how u install bms wires in order to do this put bms cables on the right way show us specifically
Thanks. I have done many videos on installing a BMS.
Never use recycled cells. One doesn't know where they are coming from. There are plenty of affordable new cells!
He is Haydn others haph. He did not show nothing to publicSome people can got kiled
Bulangiu