@@blank.24 Labels on the cells says 2500 mAh (2.5 Ah). Thats the capacity. 2500 mA load will work 1 hr. 500 mA load will work 5 hr. The guy says 20 amps, but that must be max current, and has nothing to do with capacity or lasting time.
Interesting. I want to make one myself..But I wish there was a video showing you how to actually make a battery pack. I have searched 100s of videos and they are all the same. Add the batteries, add the BMS board and it's done!!! Which wire goes where? On the BMS what is P+ P- Exactly where and why? What is the tape you use? If this video was an hour long and it took you step by step for dummies. I would watch the whole thing.! 🙂
P+ and P- for hooking up your load from the BMS.. or charger also can be hooked up to same P+ and P-.. some bms has no balanced charging function.. you can solder the balance wires directly to the battery pack, but you must check the voltage point.. if you have 4 batteries, and need to make them in series connection, you must mark the 3.7V point, 7.4V point, 11.1V point, and 14.8V point.. from that point, you can directly solder your balance wires to the battery pack for charging with balance charger or BMS (with balanced charging connector usually jst connectors)..
Awesome video, thanks for taking the time to share. A little constructive criticism. I would recommend a soldering iron with a little heavier tip. I also like to hit those larger joints with a flux pen to get a better solder flow. Your + and - connections looked maybe a little cold to me.
Love your videos...You should also consider making a 12 Volt 18650 battery pack for cars/boats and motorcycle with best available bms and some bms with remote Bluetooth monitoring! ( Weather proof) Iam sure there are so many cars and motorcycle restoration guys would love to see. Just saying. 👍
I would use 3.7v 18650 or 3.2v lifepo4 myself. 1.2v cells are generally not for any type of high power usage they are used mostly for small solar lights etc. 1.2v is a usually a AA battery cell if memory serves.
Mark Cooper Agree, there could be tons of improvements, but i think its a good start. That particular BMS has a high current shut off i believe, and short circuit protection built in, but always wouldn’t hurt to be 100% safe and add some fuses to protect each cell from blowing up.
Well... that BMS is designed for 3S and he does actually connect it the way it's intended, for the most part, with 4 nickel strips connecting to each end set of parallels. You can't really balance each cell per parallel because... they're parallel, they're connected to each other. The length of each strip may impact how balanced it is over time but those nickel strips should be pretty good while I reckon. I'm not a fan of this particular video but I dunno if I can fault him that much. I would've done a better job attaching the BMS and output cables though. I would've gotten a less cheap BMS perhaps with the wires already attached.
@@WesThatTechGuy thank u sir.. For answer my question.. Im pilipino.. But here in philipines.. But i love electronics... Because i want to put on the bluetooth speaker 12v amplifier..
Good job.. To make this job a GREAT ONE, can you please give a proper explanation of how to connect the terminals on BMS on to the battery terminals. We have some terminals on the bms that illustrates 4.2v, 8.4V and also OV. Please show us the wires to be connected to these terminals on the BMS
Hello Wes That Tech Guy, I made my first 3s batterypack few days ago. Using 3 x 4 = 12 cells. I did not solder or weld them. I used the spring loaded 3 cell plastic containers, and glued them back to back opposite directions. No cell touches eachother. But from the top and bottom I attached lot of wires, positives, negatives, and balance wires that goes together to the BMS at one end. Then I ducktaped the whole thing. I am using it to run powerful 100watt LEDs on my bike. Is it safe so far?
For your configuration you must check the maximum discharge current of your cells, in your case it must be at least 10A. Hoping the connectors won't melt obliviously
Can a connect two battery packs one chinese syncpower the other an lg battery pack together they are both 52volts the syncpower is 18ah while the lg is 23ah. I need more mileage so i need to connect an external battery pack to my scooter's internal battery
Thank you once again for the video. Some time back I requested a few info from you. Perhaps amidst the busy schedule you’d have overlooked, which is understandable. Here are the requests once again, kindly respond. 1) Do you sell PURE (99.6%) Nickel strips for 2P design through your AMAZON store? If so, please point to that link. If not please recommend a HONEST Vender who sells the same. 2) The Spot welding on those batteries look so perfect. I’m sure that welding machine must be a SUNKKO. What model is that and do you sell the same model, through your AMAZON store? FYI I use SUNKKO 788H that is so useless, that the welded Ni strip can be peeled off very easily. Any help from your side will be highly appreciated. Thanks and regards. Sree...
sorry for the lost reply.heres a link for the 2p nickel strip: amzn.to/2GxxLXc Yes its a Sunkko 709A. Heres a link: amzn.to/2IjHBhf I have on SolarGeni.com Amazon store too.
We have several current ratings to choose from. 25a, 45a, 60a, 100a all the way to 300a, you can find all of my BMS's here: solargeni.com/balance-bms. Not sure if your 4s is Lifepo4 or Lithium-ion but we have both.
I built mine from this video and I use it for my Kayak fish finder. It last a lot longer than lead acid + it's easy to carry around (doesn't weight much)
Jake Shepard I am on the same page as you, i can’t find a full video to see if they add a USB port on it or a AC port or something so it can be used as a big power bank. I’m confused too
Probably a stupid question but can you charge the batteries on the load out wire, If so what voltage and amperage. Could I use a laptop socket, and charge them from a laptop plug??
No stupid questions! Yes this is known as a common port BMS, you use the same port for charge and discharge. 12.6v max charge. 11.1v nominal. Yes a laptop power supply would work if 12.6v
@@WesThatTechGuy What would you recommend? I want a USB power bank for a phone and tablet.. Im using 14 (18650 Q30) cells in parallel (42Ah). I'm aware i could connect that to a Normal USB out board with a micro usb charge port but the charging times would be horrific and not good for the batteries i assume. so was looking at BMS, so i could wire in a better charging source. There seems to be alot of miss information or just bad advice its a mine field. any tips would be helpful as im starting out. Unless there is a better way that you can suggest.. Thanks for replying!
Thank you for this video. I made 3 of these packs to run my fish finder fir my kayak off of . Why are you not making any more videos? Hope you're ok. I liked learning from you.
@@WesThatTechGuy It is just me! I am taking soldering wires as a bit of an art! But i would twist the wires before hand fill them up with good fresh solder then fill up the pads too and then just touch them on the pads and get them stuck round and nicelly on the bms!
@@WesThatTechGuy basically fill up the wires with a good amount of solder and then put them on the bms! That would make a better placement and more secure too!
@@WesThatTechGuy Working with such thick wires though requires a bit of a powerfull soldering iron since that thick wire dissipates the heat really fast. Dont know if that is the case with you.
Hi there, thank you for the video. Is the red and black wire for charging or for output? If it is for charging then can you show how to connect for output? If it is for output, can you show how to connect cable for charging? The battery pack you just show only has one input or output. We always need both. Thank you!!!! I am just trying to fix my vacuum lol
everything I can. Mostly energy storage. This was a fast solder and iron wasn't as Hot as I'd of liked. It is much better now post video. Can't me a master of all trades you know.
I have only 1 minor thing I'd add. If it was me, I'd carefully scratch off some solder mask around the power input pads on the BMS board. That way you could add more solder, get a better solder joint, and maybe even use a heavier gauge wire.
I am planning on making a battery pack out of lifepo4 batteries in 8s 8p config for my inverter which charges the battery and discharges it. I am having a hard time searching for BMS's for it any advice?
This is not done on all battery builds. We now have them available and use them but in the past they were never used by any manufacturers that's what the BMS is for to help with issues.
Love your video man trying to build a 36 volt 12 amp battery do you have any idea how to start do u have any diagram how to complete it and doing it for my scooter look a lot of video but could not figure it out half of this are cut out the main part of it the video Spell greatly appreciate your help thanks
Thanks! I don't have one now per say but if you follow this build video and just do 10s its exactly the same. Just keep adding groups of cells so you have a 10s4-5p depending on the mah of the cells you use.
This is really concise and clear. Have you got a video showing how you charge this puppy? Your choice of power supply and connectors that turned out to be quick enough but safe?
I wouldn't advise spot welding to PCB pads. They are thin and could easily delaminate from the board. I'd solder instead. Also nowhere near enough power for an e-bike or "power wall", unless you make a bunch of these, and there's better form factors for bikes. Would also be nice to know how you're using your spot welder (120V or 230V, settings, etc.) - I've seen mixed reviews on those. Nonetheless, thanks for the video.
This is by far, the easiest to understand video that builds a very neat pack, and I've watched plenty. I'll make these and just use them in multiples for ebike batteries, or wire them as 12 volts for other applications. Thank You!
So I just built a 3S pack (only 3 cells). The cells each measure 3.5 V (new, but not fully charged). When I measure the cells in series, I get 10.5V (not fully charged). When I measure off the power leads, I get 7.8 V. Do I have a bad board, or do I just need to charge it? Kinda afraid to apply power to it .....
Yes it does. This is a common port BMS, You could add another positive wire to have 1 for load and 1 for charge so you don't have to unplug to charge. Or you can get a dual port BMS. 1 for charge and 1 for load.
So I want to make a 24V battery for testing on am ebike for a week for so, then i want to make it a 36V battery so can I do that by changing the BMS and the motor?
Wondering if I can get some help with a 4s 5p battery I have built. The BMS looks identical to the one in this video. I am charging at 17v 0.5amps and cant seem to engage the cuttoff. Not sure whats the highest point each cell could hit. On my last charge I had some hit 4.246 before I unplugged. Wondering if I'm ok to let it go ? or if I am charging it wrong... also the battery has a live load while its charging...not sure if that makes a difference. But its pulling minimal from the battery during the charge. Any help would be greatly appreciated. thanks
Can the battery be charged using BMS or separate module is required for the charging? if yes can you make video/schematic diagram for the same , how to connect charging kit to BMS
Ok dumb question: how do you figure 12.6 volts using a 3s configuration @3.7 volts each? I want to build a small 12v 18650 battery for my teardrop trailer with a solar panel on the roof; wouldn't 4s be better? Thanks!
You are not controlling the state of each cell, so you just make the same mistake everyone does. Once one or more individual cells give it up, your battery is gone, leaving good cells out of order. This means you are just copying the bad habits of before. You NEED control of each cell individually.
Johan, this is NOT so. If 1 cells goes out in the series the others will still work just fine. 1 has nothing to do with the other. This really isnt any difference than individually fused cells. So not sure what you're saying? Thanks for watching!
Everyone is asking how to charge but I cant for the life of me find the correct charger. Can you please send a link of a charger I could attach directly. Thanks
12.6v li-ion battery charger. Go to the link and choose one of the 3s lithium battery chargers solargeni.com/index.php?route=product/category&path=61_72_74
@WesThatTechGuy whats the name of the bms you used in this video and do they have for higher volts i see so no smaller wires and want a simple bms same less wires is a good thng for me with high current out put any were from 250-350 help me if you can please reply thnkxs
THIS VIDEO CAN BE SEEN WITHOUT MUSIC HERE: ruclips.net/video/p_HTv6UdgAY/видео.html
Still has music😂
8p? Isnt amp is 20 for each sell and its 20×8? 160amp? So the bms take the 160 and convert to 20/25? I dont get it...
hey can i do this with a 4s if so can i contact you?
@@blank.24 Labels on the cells says 2500 mAh (2.5 Ah). Thats the capacity.
2500 mA load will work 1 hr.
500 mA load will work 5 hr.
The guy says 20 amps, but that must be max current, and has nothing to do with capacity or lasting time.
That music is abysmall, but thanks for the video.
I love Abysmal, they rock! 😎
Interesting. I want to make one myself..But I wish there was a video showing you how to actually make a battery pack. I have searched 100s of videos and they are all the same. Add the batteries, add the BMS board and it's done!!! Which wire goes where? On the BMS what is P+ P- Exactly where and why? What is the tape you use? If this video was an hour long and it took you step by step for dummies. I would watch the whole thing.! 🙂
Same 😂
He says it in the video and has it wrote on the screen. It's Kapton tape.
P+ and P- for hooking up your load from the BMS.. or charger also can be hooked up to same P+ and P-..
some bms has no balanced charging function.. you can solder the balance wires directly to the battery pack, but you must check the voltage point..
if you have 4 batteries, and need to make them in series connection, you must mark the 3.7V point, 7.4V point, 11.1V point, and 14.8V point..
from that point, you can directly solder your balance wires to the battery pack for charging with balance charger or BMS (with balanced charging connector usually jst connectors)..
Awesome video, thanks for taking the time to share. A little constructive criticism. I would recommend a soldering iron with a little heavier tip. I also like to hit those larger joints with a flux pen to get a better solder flow. Your + and - connections looked maybe a little cold to me.
Thanks for the insight!
I completely agree. I was suffering when I see the welding. Looks cold welded. I will not trust that weld.
I love that neat and wise Nobel teaching
Thanks
So what you have here is 12V 20A Lithium battery pack, that's awesome!
Love your videos...You should also consider making a 12 Volt 18650 battery pack for cars/boats and motorcycle with best available bms and some bms with remote Bluetooth monitoring! ( Weather proof) Iam sure there are so many cars and motorcycle restoration guys would love to see. Just saying. 👍
These can be found on our website.
Voltages are a little off with Lipo/Li-ion.
LiFepo4 works out better for car,boat, moto
Good video, a little fast for a beginner, maybe explain the reason behind each move, while creating the series parallel circuit
How would you charge this?
Good job I want more videos how to integrate batteries to vehicles
Awesome video, getting on with the job, just plain simple to understand.
Thanks for sharing
You're welcome!
Can you guide me
Should i use 1.2v batteries of 4300mah for battery pack
I would use 3.7v 18650 or 3.2v lifepo4 myself. 1.2v cells are generally not for any type of high power usage they are used mostly for small solar lights etc. 1.2v is a usually a AA battery cell if memory serves.
And it's, upsidedown-- are you, blind-- deaf?
@naly Hwang right
Hi, Could you tell me if you charge the batteries via the BMS board or how do you charge and with what equipment.
an excellent straight to the point video with no distractions and presented by someone not trying to be a comedian, brilliant.
Thanks
NICE VIDEO.ITS HELP ME A LOT,THANX
cool video!, what about balancing each cell?
Mark Cooper Agree, there could be tons of improvements, but i think its a good start. That particular BMS has a high current shut off i believe, and short circuit protection built in, but always wouldn’t hurt to be 100% safe and add some fuses to protect each cell from blowing up.
Well... that BMS is designed for 3S and he does actually connect it the way it's intended, for the most part, with 4 nickel strips connecting to each end set of parallels. You can't really balance each cell per parallel because... they're parallel, they're connected to each other. The length of each strip may impact how balanced it is over time but those nickel strips should be pretty good while I reckon. I'm not a fan of this particular video but I dunno if I can fault him that much. I would've done a better job attaching the BMS and output cables though. I would've gotten a less cheap BMS perhaps with the wires already attached.
@@Nitrxgen you can't ballance each cell but you can ballance each cell row. The 3 cell rows should be ballanced separately.
Looks super clean but, as others note, mostly due to lacking charge balancing.
Sir i love this video.. I made also 3s battery.. But the input power is my problem.. Can i use input only 5v from the cellphone charger only..
Thanks. No you must use a charger that is 12v li-ion. Max charger input 12.6v
@@WesThatTechGuy thank u sir.. For answer my question.. Im pilipino.. But here in philipines.. But i love electronics... Because i want to put on the bluetooth speaker 12v amplifier..
Where did you get the spot welder and other parts used in this video?
Love the music!😎✨👍
Great info.. music ruins it though
Please what bms board can u recommend for 50amp battery pack and can also supports fast charging.. max of an hour
Check out our website solargeni.com
I'd like to learn more about your spot welder. Is it a DIY welder or a shop bought one? Many thanks
It should be a purchased item. Looks similar to a sunkko 737g+ . You can find it on Amazon
Wow very nice explain thanks bro
How do you wire BMS?Please explain it or give some link.
What do you mean?
Good job.. To make this job a GREAT ONE, can you please give a proper explanation of how to connect the terminals on BMS on to the battery terminals. We have some terminals on the bms that illustrates 4.2v, 8.4V and also OV. Please show us the wires to be connected to these terminals on the BMS
A few questions. What's the over and under voltage levels on this BMS? Does it actually do any balancing? Can you charge while a load is connected?
It got balancing resistor, it will take many cycles to balance
HELLO IT CAN NOT BALANCE AT ALL !!!!!!!!!!!!!!!!!!!!!@@divikumar5475
Nice Video, just the music in the background is very distracting- other than that good tutorial Video. Thanks
Ok thanks!
Hello Wes That Tech Guy, I made my first 3s batterypack few days ago. Using 3 x 4 = 12 cells. I did not solder or weld them. I used the spring loaded 3 cell plastic containers, and glued them back to back opposite directions. No cell touches eachother. But from the top and bottom I attached lot of wires, positives, negatives, and balance wires that goes together to the BMS at one end. Then I ducktaped the whole thing.
I am using it to run powerful 100watt LEDs on my bike.
Is it safe so far?
For your configuration you must check the maximum discharge current of your cells, in your case it must be at least 10A. Hoping the connectors won't melt obliviously
@@oli236 , Hello. It worked and I used it for few months. Then I dismantled it and spot welded it with proper method. Thank you for the reply 🙂🙂🙂
Thanks for the great video! Do you think this wud b good to start a motorcycle ? will i need a cap? Thanks
Soldering looks a bit dodgy but still an awesome video.
Can a connect two battery packs one chinese syncpower the other an lg battery pack together they are both 52volts the syncpower is 18ah while the lg is 23ah. I need more mileage so i need to connect an external battery pack to my scooter's internal battery
As long as they are the same voltage you will be fine. Be sure to connect them to parallel.
Thank you once again for the video. Some time back I requested a few info from you. Perhaps amidst the busy schedule you’d have overlooked, which is understandable. Here are the requests once again, kindly respond.
1) Do you sell PURE (99.6%) Nickel strips for 2P design through your AMAZON store? If so, please point to that link. If not please recommend a HONEST Vender who sells the same.
2) The Spot welding on those batteries look so perfect. I’m sure that welding machine must be a SUNKKO. What model is that and do you sell the same model, through your AMAZON store?
FYI I use SUNKKO 788H that is so useless, that the welded Ni strip can be peeled off very easily.
Any help from your side will be highly appreciated. Thanks and regards.
Sree...
sorry for the lost reply.heres a link for the 2p nickel strip: amzn.to/2GxxLXc
Yes its a Sunkko 709A. Heres a link: amzn.to/2IjHBhf
I have on SolarGeni.com Amazon store too.
What is the right BMS for 4s 10p battery pack ......cells are 18650 3200mah .....what is the current rating of bms ??
We have several current ratings to choose from. 25a, 45a, 60a, 100a all the way to 300a, you can find all of my BMS's here: solargeni.com/balance-bms. Not sure if your 4s is Lifepo4 or Lithium-ion but we have both.
The music sometimes makes it hard to hear and understand you!
sorry for this! It won't happen again!
I have uploaded a new version of the video with the music turned way down. Just launched it yesterday.
Autistic?
very nice and simple video. I would like to do a 12volt 14ah pack how many cells do i need
Thanks! 6p3s would be 15ah. 18 cells
I just started watching vids like this. I have no idea what the next step is though. I would really like to see what you do with it
I built mine from this video and I use it for my Kayak fish finder. It last a lot longer than lead acid + it's easy to carry around (doesn't weight much)
Jake Shepard I am on the same page as you, i can’t find a full video to see if they add a USB port on it or a AC port or something so it can be used as a big power bank. I’m confused too
Probably a stupid question but can you charge the batteries on the load out wire, If so what voltage and amperage. Could I use a laptop socket, and charge them from a laptop plug??
No stupid questions! Yes this is known as a common port BMS, you use the same port for charge and discharge. 12.6v max charge. 11.1v nominal. Yes a laptop power supply would work if 12.6v
@@WesThatTechGuy What would you recommend? I want a USB power bank for a phone and tablet.. Im using 14 (18650 Q30) cells in parallel (42Ah). I'm aware i could connect that to a Normal USB out board with a micro usb charge port but the charging times would be horrific and not good for the batteries i assume. so was looking at BMS, so i could wire in a better charging source. There seems to be alot of miss information or just bad advice its a mine field. any tips would be helpful as im starting out. Unless there is a better way that you can suggest.. Thanks for replying!
Where did you get spot welder? Or did you make your own? Great video
Got it on Amazon. Thanks
Lovely video, can you make a video using 30 sells 3.7 voltage, for 12 voltage using BMS
I made 3S 8P with BMS like that. How many volts is the maximum input of a good charger. Thnks
12.6V 100% full so charger must be 12.6V
Thank you for this video. I made 3 of these packs to run my fish finder fir my kayak off of . Why are you not making any more videos? Hope you're ok. I liked learning from you.
The way you attached the power out wires was really disturbing for me!
Any advice would be appreciated! Can you give me some pointers maybe?
@@WesThatTechGuy It is just me! I am taking soldering wires as a bit of an art! But i would twist the wires before hand fill them up with good fresh solder then fill up the pads too and then just touch them on the pads and get them stuck round and nicelly on the bms!
@@WesThatTechGuy basically fill up the wires with a good amount of solder and then put them on the bms! That would make a better placement and more secure too!
Ya I filled them prior and soldered the board but they are pretty thick so they were a bit of a pain.
@@WesThatTechGuy Working with such thick wires though requires a bit of a powerfull soldering iron since that thick wire dissipates the heat really fast. Dont know if that is the case with you.
Hi there, thank you for the video. Is the red and black wire for charging or for output? If it is for charging then can you show how to connect for output? If it is for output, can you show how to connect cable for charging? The battery pack you just show only has one input or output. We always need both. Thank you!!!! I am just trying to fix my vacuum lol
What do you use this for, and, the soldering was less than desirable.!!
everything I can. Mostly energy storage. This was a fast solder and iron wasn't as Hot as I'd of liked. It is much better now post video. Can't me a master of all trades you know.
Thanks Wes, that was very helpful man!:)
Whats the maximum number of batteries i can use for 1 BMS?
that depends on how many cells you going use i would say i would only use as many cells that bms is use for like 6s bms i would only use 6 18650s
I have only 1 minor thing I'd add. If it was me, I'd carefully scratch off some solder mask around the power input pads on the BMS board. That way you could add more solder, get a better solder joint, and maybe even use a heavier gauge wire.
Where do you get your parts?
the batteries from Samsung and we have the bms' made for us. you can get them on our website. solargeni.com
how do you charge it with a balance charger? lipo or pb setting?
With a 12.6 V Lipo charger
The BMS takes care of the balancing
Intro for headphone users be like:
o____ o_____ ' _____o _____o
Only legends will understand
to charge or discharge use the same bms terminals ?
Yes, this is a common port BMS meaning you charge and discharge from the same wires
@@WesThatTechGuy thank you
Nice video but no explanation of battery connection positive/ - the average could get hurt not knowing what his soldering
I am planning on making a battery pack out of lifepo4 batteries in 8s 8p config for my inverter which charges the battery and discharges it. I am having a hard time searching for BMS's for it any advice?
We sell 8S Lifepo4 battery chargers at solargeni.com. We also sell the BMS you need.
@@WesThatTechGuy does it ship to india? with or without customs BTW?
@@MathewZ788 Sorry no we do not ship to India currently
@@WesThatTechGuy damn aight thanks for the reply I guess
You forgot the short circuit preventer rings to all of the batteries's positive side.
This is not done on all battery builds. We now have them available and use them but in the past they were never used by any manufacturers that's what the BMS is for to help with issues.
Best explanation Sir. Thanks
Love your video man trying to build a 36 volt 12 amp battery do you have any idea how to start do u have any diagram how to complete it and doing it for my scooter look a lot of video but could not figure it out half of this are cut out the main part of it the video Spell greatly appreciate your help thanks
Thanks! I don't have one now per say but if you follow this build video and just do 10s its exactly the same. Just keep adding groups of cells so you have a 10s4-5p depending on the mah of the cells you use.
This is really concise and clear. Have you got a video showing how you charge this puppy? Your choice of power supply and connectors that turned out to be quick enough but safe?
Thanks! I haven't done a video on the charging but you can get them at solargeni.com. We sell most li-ion and lifepo4 chargers.
So did I get it right that I can also use this BMS but with 3S2P?
Yes you can. Any 3s config up to limitless Parallel
If you're using 18650s as a 10AH 12v battery pack on a solar charge controller system, do you still need a BMS?
its best to use a BMS
@@WesThatTechGuy Would it be better then to buy cells with BMS built in? That way a 20AH pack could be built easily
Very well done!!!
I wouldn't advise spot welding to PCB pads. They are thin and could easily delaminate from the board. I'd solder instead. Also nowhere near enough power for an e-bike or "power wall", unless you make a bunch of these, and there's better form factors for bikes. Would also be nice to know how you're using your spot welder (120V or 230V, settings, etc.) - I've seen mixed reviews on those. Nonetheless, thanks for the video.
Thanks for watching. I appreciate your input. My spot welder is 120 V.
So Neat and Clean you have built the battery pack👍👍, it's looking good after you made it , I am impressed 😊😊
thanks for the no music version, and no soldier or lead here. Ni and spot welds. trying the other version to see if, well it is more sober.
Can two 12V battery packs in series become 24V and can batteries in series be charged with a voltage of 24V.
Thanks.
Yes They can.
Nice video. It's quite informational and educative.
very neat and clean battery pack.. keep it up dude..
detailed and informative ..... nice work i will make one soon thanx
Could do with some description as to what a BMS is.. charger circuit thing? Input voltage?
battery management system. 3s 12.6v charged. Used to protect the battery pack.
This is by far, the easiest to understand video that builds a very neat pack, and I've watched plenty. I'll make these and just use them in multiples for ebike batteries, or wire them as 12 volts for other applications. Thank You!
Kenny thanks for watching! You’re welcome!
@@WesThatTechGuy how much amps it produced????
@@techtricks5553 it can do 200a
How to make 100a?
So I just built a 3S pack (only 3 cells). The cells each measure 3.5 V (new, but not fully charged). When I measure the cells in series, I get 10.5V (not fully charged). When I measure off the power leads, I get 7.8 V. Do I have a bad board, or do I just need to charge it? Kinda afraid to apply power to it .....
are you using a balance BMS? is so you most likely connected the balance leads wrong.
Great video content, thanks
Do you use the same wires to charge the batteries and to power a device? Could we have two plugs? One to charge and one to power the device?
Yes it does. This is a common port BMS, You could add another positive wire to have 1 for load and 1 for charge so you don't have to unplug to charge. Or you can get a dual port BMS. 1 for charge and 1 for load.
Are you gonna pump 25A on that thin bare copper trace on the PCB? Won't it track? Aren't those solder joint gonna melt?
Yes with no problems. I’ve been using this battery for a year or two now with no problems.
Wes where can I buy empty shells or cases for all sizes of battery packs??
These are hard to come by, you would have to try China most likely.
@@WesThatTechGuy aliexpress?
@@keithjackson1170 you can try it. Not sure
Thumbs up for the kick ass music!!!!!
Thanks for video 3.7v 10ah lithium polymer battery what BMS use 3s please tell me sir 12v 10ah
You're welcome. Thanks for watching! You would make it half the size. 12 cells... 4p3s
What is the recomended battery charger voltage for this type of power wall ? 12/24 v ?
12v
Thank you
solargeni.com/battery-chargers/12.6v-3s-5a-lithium-battery-charger-tesla-power-wall-s120
Very cool project! Like!
thanks
Would be nice if you can put the total costings of the DIY vs. the one sold on the market.
what welder, and setting works best? those portable hand spot welders don't work out so well
Awsome video, do you have one on charging this entire pack?
Does the BMS take care of the cell balancing?
Ritik Kedia yes
So I want to make a 24V battery for testing on am ebike for a week for so, then i want to make it a 36V battery so can I do that by changing the BMS and the motor?
Hello, some says put fuses between batteries but how? or solder cables or fuses as cables?
Can I charge the batteries with BMS too ? or it just output
Yes. Is both input and output terminals
You never said what size wire you used to attack to the bms board? I would hate to use wire to small and cause a fire :(
I used 10g for this build as its a small pack with only an assumed 20a continuous discharge.
Does it change anything if I solder instead of spot welding?
Nope not at all as long as you do it right.
what a great website
Wondering if I can get some help with a 4s 5p battery I have built. The BMS looks identical to the one in this video. I am charging at 17v 0.5amps and cant seem to engage the cuttoff. Not sure whats the highest point each cell could hit. On my last charge I had some hit 4.246 before I unplugged. Wondering if I'm ok to let it go ? or if I am charging it wrong... also the battery has a live load while its charging...not sure if that makes a difference. But its pulling minimal from the battery during the charge. Any help would be greatly appreciated. thanks
DAM Guru I would try another bms. And make sure you have the proper charger
17 V is too high for a 4s pack. Max is 16.8 V
@@WesThatTechGuy ok I will give that ok....much appreciated
Where can I find the checkerboard nickel strips you used for the first part of the welding process ?
you can get here: amzn.to/3cYBxIr and here: amzn.to/3d2uBtY
Simple and straight forward , nice
Thanks
Can the battery be charged using BMS or separate module is required for the charging? if yes can you make video/schematic diagram for the same , how to connect charging kit to BMS
yes it can be charged using the BMS or can just be balance charged. I will upload a schematic on my site soon. sorry for the delay on this
Very helpful. Thank a lots
I’m just learning. Does BMS stand for “battery management system?”
Ok dumb question: how do you figure 12.6 volts using a 3s configuration @3.7 volts each? I want to build a small 12v 18650 battery for my teardrop trailer with a solar panel on the roof; wouldn't 4s be better? Thanks!
Nominal voltage is 11.1 V charge voltage is 12.6 V.
Nominal voltage is 11.1 V charge voltage is 12.6 V.
Nominal voltage is 11.1 V charge voltage is 12.6 V.
great video! - thanks
How does the battery bank weigh that size?
its just a few pounds. extremely light weight.
Thanks for the video. I want to to build a 12 volt 60 AH battery, how do I increase the watt hours?
You are not controlling the state of each cell, so you just make the same mistake everyone does. Once one or more individual cells give it up, your battery is gone, leaving good cells out of order. This means you are just copying the bad habits of before. You NEED control of each cell individually.
Johan, this is NOT so. If 1 cells goes out in the series the others will still work just fine. 1 has nothing to do with the other. This really isnt any difference than individually fused cells. So not sure what you're saying? Thanks for watching!
Everyone is asking how to charge but I cant for the life of me find the correct charger. Can you please send a link of a charger I could attach directly. Thanks
12.6v li-ion battery charger. Go to the link and choose one of the 3s lithium battery chargers
solargeni.com/index.php?route=product/category&path=61_72_74
@WesThatTechGuy whats the name of the bms you used in this video and do they have for higher volts i see so no smaller wires and want a simple bms same less wires is a good thng for me with high current out put any were from 250-350 help me if you can please reply thnkxs
How do you charge it can you please show me 😢