That was amazing. Thank you. I have been a survival concept person since the military, I love how you tackle a project. looks like that fit like a glove well done. Beautiful Sir.
thank you so much.. im looking forward to buying or donating for the book.. 1st class presentation... I was just blessed with an apartment...(low income) Formerly homlesas since 2017. When my honey went into eternity . R.I.P (Angelina Dennis. So i'm determined to show the world, especially those down but not out; how to Recycle what post covid throw aways. I've worked very hard on scavenging parts for over 2 years, and hiding them in various places. I just moved in 2 weeks ago, and i just retrieved my bike frame, closed my u-haul space. and evenlost almost everything i stored. But I was blessed to hold on to the bike frame , the motor, and the failed 36V battery with bms. All this is so new and exciting to me. People are laughing when i tell them "I'm building and electric car upstairs" Your video was the first of its kind To address the complexity of E-batteries. I was way off, thank u for real clairity. 10 toes down info... Poetry Seattle
RJB 1 second ago This is one of the best elemental and straight forward DIY battery building tutorials that I have experienced to date. Very professional and considerate.
Excellent Micah. Your method of teaching is precise showing every step of the process for building a custom battery pack. I really enjoyed and much needed this video to help with my project. Thank you for sharing your knowledge!!!
If you know what you are doing,not a problem, I can only follow the video, a quarter of it, the rest , I just ease my mind....but truly grateful to you Micah, gonna try out making my own battery pack since my ebike company don't have extra battery for it.
I'm over 60 years old and just found your channel. It was very interesting and I am glad I found it. I will admit that it was not easy to follow but nothing new ever is. nice work
This was fantastic! I build/convert bicycles to electric in Denver, CO and my plan is to also build decent batteries to fit in the frames of client's bikes. You are a huge help in my education! Thank you!
Micah, thanks for making yet another great DIY video for us all to learn from! These are the types of quality videos that we have all been looking for, with the in-depth explanations and quality video for us to follow along with! You are an inspiration to the entire DIY ebike community!
This hobby started out as saving for an already built e bike, after saving up and doing lots of research, I found it easier to build my own, and now, I find myself watching how to make the batteries for the e bikes lol. You can say im addicted, without ever being on an ebike cuz of indecisiveness.
if you're building larger odd shaped batteries (like 16s12p) where you need the positive and negative in a specific spot I suggest using a SAT solver or some mapping algorithms to build a graph with minimal nickel strip use. I kept failing to do this on paper efficiently until I just put in the effort to encode it as a SAT problem.
I'm a rank beginner with things like that but I need to build a 20s5p battery in a triangle shape. Could you please add some more info to what you've said here?
This is really well explained, thank you. I wonder how much heat builds up in these foam and heat shrink wrapped packs during charging and heavy usage especially under high outside temperatures. Can this reduce the life of the packs and what options are there to help keep temperature at optimal levels?
Excellent video, I really appreciate the effort and attention to detail you put into your content. I'm really starting to follow your videos as I'm looking to make a larger 48V battery pack with more max current output for a large PMDC motor scooter project. I'd love to see a video for something with more power than an e-bike! Keep up the great work!
Very Useful to see how you can max out cell count and still be safe on current load. Would love to see you build (2) 6s batteries without BMS; just balance wires so you could use a cheap 6s balance charger. Then show them connected in series to overvolt a 36v battery to to 43.2v
Enjoy your videos and guided on how to build these battery packs. I plan on building me a 18s 6p battery pack to get the maximum power and range. Also will be building me a 4 wheel bike from scratch to put it on.
Wow bro im so impressed with the way you wrap your batteries effortlessly, and you slide your packs in perfectly! I bet you have no problems strapping rubbers on either... when you want to, errm discharge your own batteries ;p
Well done video. I am very impressed with the information and delivery. I will be using this to aid me in building of a battery cell pack for my e-bike. Thank you very much for a well delivered tutorial.
This is the first time I have Subscribed and commented on a video. I really enjoyed your video (easy to follow) and links. I am confident that I can now take on my battery assembly for my multiple 4H robotics projects. Thanks so much.
Another great video Micah. BTW, I had a copy of your diy battery build book on my laptop that decided to check out on me last week. If I'm lucky enough to win I'd prefer a hard copy so as to not have to risk losing it to electronic failure. Thanks and keep up the good work!!!
Hi could you make a video about how many cells and parallel/series connections to make battery's of various common sizes, for example 36v, 48v, 52v and 10ah, 20ah 30ah ? It would be so informative for guys like myself who are new to this and trying to learn the basics of ebike battery building. Great channel by the way I've learned so much already
Hi you are doing really great job and educating the ones who are curious to know and learn about lithium cells and packs. I would like to ask you the below doubts 1. If we are using protected cells in battery packs still we need bms in pack. 2. Please give more light on cell charging cycle and life. If we are not discharging to minimum voltage and charge before that is it going to increase life cycle.
Thanks Micah. Great easy to follow presentation. There is an agent for those cool click in holders here in New Zealand so I'm going to buy a set and build a booster battery for my e-bike, Thanks again. Now I know how!
Thank you for another excellent video on battery building, the gaps in my knowledge of E bike battery building are slowly but surely being filled, regards Doc Cox.
Good morning, great job, I'm crazy to win this book !!! I'm Brazilian, and I'm watching all your videos, very good parabens !!! Two years ago I'm riding e-bikes. Thank you for your explanations !! Big hug friend....
Your videos are simple and direct to the point. So much to learn from it. I have an electric scooter with a brush motor, its rated 24v as it uses two ups lead acid batteries rating 12v 10A each. Can i run the scooter with same battery rating as you have built here?
Very good. I like the small pack. it can be used for short trips. We got a lot of rain in Switzerland. How about the watherproofnes of this pack an the bag? With the shrinked tubing it mind be kind of wather resistent. What do you consider for 30 min trips in rain?
Making something water resistant is pretty tough. By choosing a good bag and putting wax on the zipper, you can get a good start. Then make sure your battery is completely heat shrinked and maybe even put it in a plastic bag inside your bike bag. I've ridden in a max of about 20-25 mins of rain that way with my EM3EV bag and its held up pretty well.
Smart and cute little battery pack, lots of things learn from your video. In India price of 18650 cells are on higher side, so dropped planning of battery pack. Even varzend not provide 18650 lgmj1 cells in india
I'm in two minds whether to use 18650 or 26650 batteries on my build, the basics for the build will be the same - its mostly a question of cost vs size. At the moment - I can source a 26650 for £5.95 (4500mAh) , whereas the cheapest LG MJ1's are £5.05 (3500mAh ). I'm on a tight budget - I intend to get both the books as I'm sure this will help me build my project cheaper. Great videos Micah keep them coming =)
Great video on a 36v @ 12ah what kind of time limit should I get its a 350w motor ? Ran bike for 40 minutes and the pack was warm to hot is there a bad cell? Thanks for the help.
Hi Micah, by the series bus. Are those fuses because the series connection are alternating but these things goes between those 3 parallel cells. Could you please clear on that. to be more clear I am talking about the 8 figure like connections of the Nickel strips.
recently purchased yr book on DIY lithium batts, I'm looking at using an 80v greenworks battery but couldn't find anything in yr book about how to install a low voltage disconnect option. these batteries are 20s so when one cell goes bad it will start to degrade batts on either side before failing altogether. do you know of any low voltage disconnect modules that can disconnect the cells once they degrade to a define voltage (eg 72V). Appreciate yr book, easy to use and understand.
Hi Micah I have just finished building a 7s x10p battery pack I have chosing the BMS but I am not sure where to start with the balancing wires , to start soldering which side or series do I begin the 1st wire soldering.
+CheapVlog Yea I didn't even even realize it till a year and a half ago or so when I looked closer at the GA cell data sheet's graph. I guess thats why they don't list a cycle life number and just give you the graph. So you have to investigate yourself...
EbikeSchool.com So... does this method work when building a bomb? *Kidding* *Seriously though, would you recommend wiring the 18650’s in parallel or series when making an external, rechargeable battery for iPhones and other gadgets one may need to recharge?*
I’m planning on 52v - 17Ah with GAs that will sandwich the down tube because the main triangle is too small to fit them all inside. They be encased in a poplar frame with ply sides.
Great video! Just one point: not sure if this was already addressed in the comment (didn't read the whole 231 comments...) but when you add a second nickel strip to "beef up" the connection for a cell that's not directly connected to the next group of cells, you did effectively double one of the parallel connection. But shouldn't you also (or rather) "beef up" one of the series connection ? I mean if cells 1 and 2 have a direct connection to the next group of cells while cell 3 has not, you beefed up the connection between cell 3 and cell 2 but you should also beef up the connection between cell 2 and the next group of cells. If your pack must provide 15A and you only have 2 nickel strips for series connections, each strip will carry 7.5A, which is still acceptable for a 7mm wide and 0.15mm thick nickel strip but at the top of the acceptable range. So basically, rather than doubling a parallel connection, shouldn't you just double one of the series connection instead?
Great video, pardon my ignorance however i am not understanding why go with the .15mm thick nickel rated for 4.7 amp when these batteries are 10amp continuous? Wouldn't you want to go with the .2 or .3mm thick nickel?
I like your video! Thanks for helping us layman understand lithium batteries and their construction. Now for my question :-) I have a newer Smart Electrician(Menard's Brand) LED light with a Samsung 3 cell 11.1v 2200mAH 18650 pack that won't take a charge any longer. I couldn't find my charger for several months, and let the batteries probably get too low. I was told that I could possibly bring them back to life by charging them with a older non-lithium Ion charger for a short period of time. Is this possible, and if so what would would recommend for voltage, connecting, etc. Thank you, Al
Great video - you just sold me on both of your books and every tool you used - you make it it look fun and completely no-stress! (is the spot welder 110 or 220)
Great info. I just started harvesting batteries to make big cells for a laser project. I need to learn more about the way they are joined in series or parallel
Nice videos. Is it better for my 52v 17.5ah Sanyo GA battery if I charge it right after I come home when its still warm or can I wait couple hours til 11 p.m as its cheaper to charge at night? Could something bad happened to the battery if I left it for 18 days fully charged? Is it really worth to buy a charger which charges to 80% and expect longer battery life?
Thank you liked and subed how much cheaper is it to build your own batter? Also id like to know about the Nickle connectors why not use steel or copper? I would like to make my own Ebike but the battery's are too expensive how ever i am skilled at engineering. Id like a battery that is powerful so i can have more speed 48v/60v 2000w the motor says. What MAH hour cells should i get as id like the battery life to last? Id like to know how to charge the batteries what kind of charger do i need. I'd like reliable but cheap as possible cells what should i get and what not to get? Again thank you for the video.
Hey mate, you are doing great job. I will love to make my first ebike with the purpose of primary way of transport. Already watched all your TH-cam videos and hopefully I can get the book. Thanks a lot for share!!
I dont see why not i used mne to get me around just keep in mind most premade batteries will only take you to a certain range befor youre out of juice and have to crank it manually
That was very good and I could follow it. THANKS One question could you give a weight was that battery? I have stairs from my Apt. and its hard for us to carry bikes down and up. We already make trips bake up for our bags and I'd still like to limit that as possible.
What do you think about using capacity checkers with balance functionality to balance batteries? Just bought one and thinking about use just a charge controller to manage over and under pack voltage and using the capacity checker to balance the series packs.
Hi Micah, great video series and book - the DIY Li Batt is a treasure trove of battery info. I'm getting ready to construct a pack (my first) and wanted to ask for your opinion on using pure copper strips instead of pure nickel. As I'm sure you know, the current carrying capacity of copper is about 3-4 times better and the resistance about a quarter. Also, the cost (on Amazon*) is similar. Do you have any advise (for or against) with using copper. I will be spot welding onto MJ1s - I've seen others on YT saying that spot welding copper (only) to cells is difficult and might need a 'copper-nickel sandwich' weld arrangement. Any insight into this would be great. Many thanks.
Awesome videos Micah, they are a great resource for novice ebike builders. I am currently working on an electric tandem bike and have found your videos more than helpful. Do you have any advice on how to get reliable and value for money batteries when ordering in bulk from Alibaba or Aliexpress?
Well that made it heaps clearer for me on my road to discovery thanks heaps. I have a question and thats about adding fuses to packs? Is it necessary if using a bms or only if no BMS ? How do you work out what size fuse to add? And what types of fuses are best?
Great video! I am just finishing reading your book DIY lithium batteries - great book. Have you ever tried to attach a GPS tracker to the battery pack? Thanks!
i enjoyed this video. I am explloring opening up a 36 volt lithium battery i have that i know has one or more cells that are not charging or are low charge.. I am thinking of getting the DIY lithium kit to put it all back together. I also want to sort out creating a USB out port for the pack to recharge cell phones etc. And I am also xploring builing a 5s or 48v pack for the same ebike to give me more speed. .. perhaps also building 2 packs to i have increased range capacity when i need it.
Hello. I have 3 beautiful questions: 1. Can I use battery holders instead of connecting the terminals of a battery cells, then join the wires + -? 2. Is it necessary to use BMS while the batteries can be pull out and being charged with Li-ion Battery Charger? 3. Can ESC used in RC projects be an alternative to manage the outgoing voltage and current of the battery? Thanks in advance for response!
That was amazing. Thank you. I have been a survival concept person since the military, I love how you tackle a project. looks like that fit like a glove well done. Beautiful Sir.
thank you so much..
im looking forward to buying or donating for the book..
1st class presentation...
I was just blessed with an apartment...(low income)
Formerly homlesas since 2017. When my honey went into eternity . R.I.P (Angelina Dennis.
So i'm determined to show the world, especially those down but not out;
how to Recycle what post covid throw aways. I've worked very hard on scavenging parts
for over 2 years, and hiding them in various places. I just moved in 2 weeks ago, and i just retrieved
my bike frame, closed my u-haul space. and evenlost almost everything i stored. But I was blessed to hold on to the bike frame , the motor, and the failed 36V battery with bms. All this is so new and exciting to me. People are laughing when i tell them "I'm building and electric car upstairs"
Your video was the first of its kind To address the complexity of E-batteries. I was way off, thank u for real clairity.
10 toes down info...
Poetry Seattle
RJB
1 second ago
This is one of the best elemental and straight forward DIY battery building tutorials that I have experienced to date. Very professional and considerate.
Huge fan Micah! The ebike world needs more people like you.
Excellent Micah. Your method of teaching is precise showing every step of the process for building a custom battery pack. I really enjoyed and much needed this video to help with my project. Thank you for sharing your knowledge!!!
If you know what you are doing,not a problem, I can only follow the video, a quarter of it, the rest , I just ease my mind....but truly grateful to you Micah, gonna try out making my own battery pack since my ebike company don't have extra battery for it.
I'm over 60 years old and just found your channel. It was very interesting and I am glad I found it. I will admit that it was not easy to follow but nothing new ever is. nice work
This was fantastic! I build/convert bicycles to electric in Denver, CO and my plan is to also build decent batteries to fit in the frames of client's bikes. You are a huge help in my education! Thank you!
Micah, thanks for making yet another great DIY video for us all to learn from! These are the types of quality videos that we have all been looking for, with the in-depth explanations and quality video for us to follow along with! You are an inspiration to the entire DIY ebike community!
This hobby started out as saving for an already built e bike, after saving up and doing lots of research, I found it easier to build my own, and now, I find myself watching how to make the batteries for the e bikes lol. You can say im addicted, without ever being on an ebike cuz of indecisiveness.
Best method for building battery packs with uneven shapes..........very informative video sir.....thank u
I don't regret subscribing to this channel because am also an 18650 geek.
if you're building larger odd shaped batteries (like 16s12p) where you need the positive and negative in a specific spot I suggest using a SAT solver or some mapping algorithms to build a graph with minimal nickel strip use. I kept failing to do this on paper efficiently until I just put in the effort to encode it as a SAT problem.
I'm a rank beginner with things like that but I need to build a 20s5p battery in a triangle shape. Could you please add some more info to what you've said here?
So helpful thank you. I've been wanting to try making my own battery for a while.
Dude you're so smart. I'm excited to build my own massive LiFePO4 battery
Finishing your DIY battery book and getting in to project!
Nice build and good explanation. One day I will make my own battery packs.
Nice layout process and I liked how you broke it down to where they were in sets of 3.
I hope too build my own batteries soon. Thanks for all your help
You are amazing! I'm learning how to do everything in my E-Bike with you... And I now know even more than most of the sellers just by your channel xD
Did u buy his book for batteries(
Thank you for your informative video. A bit over my head, but i am just learning and you are a good resource.
You're a great teacher. I just built my first rectangular battery and will be doing a small reserve odd shaped one.
I love your presentations. You make it simple to do. Thanks!
I'll most likely never have the stuff to build a battery, but man what a cool video.
Really cool video. Came across your channel after reading your book. Great stuff!
This is really well explained, thank you. I wonder how much heat builds up in these foam and heat shrink wrapped packs during charging and heavy usage especially under high outside temperatures. Can this reduce the life of the packs and what options are there to help keep temperature at optimal levels?
Excellent video, I really appreciate the effort and attention to detail you put into your content. I'm really starting to follow your videos as I'm looking to make a larger 48V battery pack with more max current output for a large PMDC motor scooter project. I'd love to see a video for something with more power than an e-bike! Keep up the great work!
Very Useful to see how you can max out cell count and still be safe on current load. Would love to see you build (2) 6s batteries without BMS; just balance wires so you could use a cheap 6s balance charger. Then show them connected in series to overvolt a 36v battery to to 43.2v
Wow great video. Love the attention to detail. Your the man 🤜🏻🤛🏻
Enjoy your videos and guided on how to build these battery packs. I plan on building me a 18s 6p battery pack to get the maximum power and range. Also will be building me a 4 wheel bike from scratch to put it on.
Wow bro im so impressed with the way you wrap your batteries effortlessly, and you slide your packs in perfectly! I bet you have no problems strapping rubbers on either... when you want to, errm discharge your own batteries ;p
Well done video. I am very impressed with the information and delivery. I will be using this to aid me in building of a battery cell pack for my e-bike. Thank you very much for a well delivered tutorial.
This is the first time I have Subscribed and commented on a video. I really enjoyed your video (easy to follow) and links. I am confident that I can now take on my battery assembly for my multiple 4H robotics projects. Thanks so much.
Thanks a lot! I love watching your videos, i learned a lot! God bless!
Another great video Micah. BTW, I had a copy of your diy battery build book on my laptop that decided to check out on me last week. If I'm lucky enough to win I'd prefer a hard copy so as to not have to risk losing it to electronic failure. Thanks and keep up the good work!!!
Hi could you make a video about how many cells and parallel/series connections to make battery's of various common sizes, for example 36v, 48v, 52v and 10ah, 20ah 30ah ? It would be so informative for guys like myself who are new to this and trying to learn the basics of ebike battery building. Great channel by the way I've learned so much already
Hi you are doing really great job and educating the ones who are curious to know and learn about lithium cells and packs.
I would like to ask you the below doubts
1. If we are using protected cells in battery packs still we need bms in pack.
2. Please give more light on cell charging cycle and life. If we are not discharging to minimum voltage and charge before that is it going to increase life cycle.
Thanks so much man... I have learned so much.. I hope to see more of such videos
Really nice video. I am looking to build my first ebike and the videos are helping a lot. Thanks.
Great video fella, keep up the good work👍
Thanks Micah. Great easy to follow presentation. There is an agent for those cool click in holders here in New Zealand so I'm going to buy a set and build a booster battery for my e-bike, Thanks again. Now I know how!
Micah is one of the best! Always good information.
Very well done and informative. Thanks for an invaluable presentation!
Thank you for another excellent video on battery building, the gaps in my knowledge of E bike battery building are slowly but surely being filled, regards Doc Cox.
Good morning, great job, I'm crazy to win this book !!! I'm Brazilian, and I'm watching all your videos, very good parabens !!! Two years ago I'm riding e-bikes. Thank you for your explanations !! Big hug friend....
Great video, Micah, you're a great source of info for the DIYer. Many thanks, Adrian.
Your videos are simple and direct to the point. So much to learn from it. I have an electric scooter with a brush motor, its rated 24v as it uses two ups lead acid batteries rating 12v 10A each.
Can i run the scooter with same battery rating as you have built here?
Love your teaching bud
Very good. I like the small pack. it can be used for short trips. We got a lot of rain in Switzerland. How about the watherproofnes of this pack an the bag? With the shrinked tubing it mind be kind of wather resistent. What do you consider for 30 min trips in rain?
Making something water resistant is pretty tough. By choosing a good bag and putting wax on the zipper, you can get a good start. Then make sure your battery is completely heat shrinked and maybe even put it in a plastic bag inside your bike bag. I've ridden in a max of about 20-25 mins of rain that way with my EM3EV bag and its held up pretty well.
Great job Micah - You make it look so easy - Thank you
Very good HowTo, why do you use a BMS and not a loader with balance lead support?
Diy lithium batteries. Love your videos. So helpful!!
Great concise info enjoyed your DIY Lithium battery book a great resource, cheers
Wow these videos you make are really helping. keep it up!
Yea! You’re making this very easy!
Smart and cute little battery pack, lots of things learn from your video. In India price of 18650 cells are on higher side, so dropped planning of battery pack. Even varzend not provide 18650 lgmj1 cells in india
Great video very informing visual is so much better for me
That's an awesome idea to add a pull handle!
I'm in two minds whether to use 18650 or 26650 batteries on my build, the basics for the build will be the same - its mostly a question of cost vs size. At the moment - I can source a 26650 for £5.95 (4500mAh) , whereas the cheapest LG MJ1's are £5.05 (3500mAh ). I'm on a tight budget - I intend to get both the books as I'm sure this will help me build my project cheaper. Great videos Micah keep them coming =)
Get panasonic you if you intrested on lasting longer 800+sicles mj1are good but degrade faster.
I found out 2665 more exp so dont use them unles u wona spend allot.
Great video on a 36v @ 12ah what kind of time limit should I get its a 350w motor ?
Ran bike for 40 minutes and the pack was warm to hot is there a bad cell?
Thanks for the help.
Hey Gareth! Go for 21700 or 20700 sized cells. They are worth the money!
Aravind Nair Where do you source the 2170 cells?
Thanks for the videos, I picked up your book too. Time to get started!
Hi Micah, by the series bus. Are those fuses because the series connection are alternating but these things goes between those 3 parallel cells. Could you please clear on that. to be more clear I am talking about the 8 figure like connections of the Nickel strips.
recently purchased yr book on DIY lithium batts, I'm looking at using an 80v greenworks battery but couldn't find anything in yr book about how to install a low voltage disconnect option. these batteries are 20s so when one cell goes bad it will start to degrade batts on either side before failing altogether. do you know of any low voltage disconnect modules that can disconnect the cells once they degrade to a define voltage (eg 72V). Appreciate yr book, easy to use and understand.
This is exactly the video I was hoping for next! Thank you Micah!
Hi Micah I have just finished building a 7s x10p battery pack I have chosing the BMS but I am not sure where to start with the balancing wires , to start soldering which side or series do I begin the 1st wire soldering.
Another awesome "HOW TO" / "STEP BY STEP" video from Micah... ohhh yeaahhh!!!
You rock dude!!! =]
Yep! First two stops for me every day after work is the Micah and ElectricBike! Powwwweerrrr! What do you have for us next Bruno?
+CheapVlog Yea I didn't even even realize it till a year and a half ago or so when I looked closer at the GA cell data sheet's graph. I guess thats why they don't list a cycle life number and just give you the graph. So you have to investigate yourself...
ElectricBike you write how you talk
EbikeSchool.com
So... does this method work when building a bomb?
*Kidding*
*Seriously though, would you recommend wiring the 18650’s in parallel or series when making an external, rechargeable battery for iPhones and other gadgets one may need to recharge?*
I’m planning on 52v - 17Ah with GAs that will sandwich the down tube because the main triangle is too small to fit them all inside. They be encased in a poplar frame with ply sides.
Excellent information. I love your videos. Thanks ever so much!
Great video! Just one point: not sure if this was already addressed in the comment (didn't read the whole 231 comments...) but when you add a second nickel strip to "beef up" the connection for a cell that's not directly connected to the next group of cells, you did effectively double one of the parallel connection. But shouldn't you also (or rather) "beef up" one of the series connection ? I mean if cells 1 and 2 have a direct connection to the next group of cells while cell 3 has not, you beefed up the connection between cell 3 and cell 2 but you should also beef up the connection between cell 2 and the next group of cells. If your pack must provide 15A and you only have 2 nickel strips for series connections, each strip will carry 7.5A, which is still acceptable for a 7mm wide and 0.15mm thick nickel strip but at the top of the acceptable range. So basically, rather than doubling a parallel connection, shouldn't you just double one of the series connection instead?
is direct welding cells touching eachother safe or are plastic snap together brackets worth investing in?
Excellent video!
Great video, pardon my ignorance however i am not understanding why go with the .15mm thick nickel rated for 4.7 amp when these batteries are 10amp continuous? Wouldn't you want to go with the .2 or .3mm thick nickel?
Fantastic. Wonderful How to Video. Thanks For Sharing Micah.
I like your video! Thanks for helping us layman understand lithium batteries and their construction. Now for my question :-)
I have a newer Smart Electrician(Menard's Brand) LED light with a Samsung 3 cell 11.1v 2200mAH 18650 pack that won't take a charge any longer. I couldn't find my charger for several months, and let the batteries probably get too low. I was told that I could possibly bring them back to life by charging them with a older non-lithium Ion charger for a short period of time. Is this possible, and if so what would would recommend for voltage, connecting, etc. Thank you, Al
I plan to use used laptop cells, what do you think about cell fusing with fuse wires?
Thank you for step by step demo!
Great video - you just sold me on both of your books and every tool you used - you make it it look fun and completely no-stress! (is the spot welder 110 or 220)
Mine is 220V. I've heard the 110V ones can sometimes be finicky.
Great info. I just started harvesting batteries to make big cells for a laser project. I need to learn more about the way they are joined in series or parallel
Nice videos. Is it better for my 52v 17.5ah Sanyo GA battery if I charge it right after I come home when its still warm or can I wait couple hours til 11 p.m as its cheaper to charge at night?
Could something bad happened to the battery if I left it for 18 days fully charged?
Is it really worth to buy a charger which charges to 80% and expect longer battery life?
Great videos! I’m just getting into it and they are super helpful. Thanks!
Hi Micah, can we spot weld battery packs with .2 mm copper sheet, will both the metals bond, what metal is the battery contact points made of
nickel
Thank you liked and subed how much cheaper is it to build your own batter? Also id like to know about the Nickle connectors why not use steel or copper? I would like to make my own Ebike but the battery's are too expensive how ever i am skilled at engineering. Id like a battery that is powerful so i can have more speed 48v/60v 2000w the motor says. What MAH hour cells should i get as id like the battery life to last? Id like to know how to charge the batteries what kind of charger do i need. I'd like reliable but cheap as possible cells what should i get and what not to get? Again thank you for the video.
Hey mate, you are doing great job. I will love to make my first ebike with the purpose of primary way of transport. Already watched all your TH-cam videos and hopefully I can get the book.
Thanks a lot for share!!
I dont see why not i used mne to get me around just keep in mind most premade batteries will only take you to a certain range befor youre out of juice and have to crank it manually
Needed information thanks for making the books available.
How did you know what strip you are gonna use? What calculations? Where did un get the 15amps?
Does the P- go to the controller of the ebike conversion kit or the actual motor hub ?
Hi Mika great video can you tell me where you got the bag for the batteries?
So glad I found your videos there so clear, do you recommend scraping from laptop batteries or buying for best results? You've got my sub .
in 8:50 I am not sure why you have to put extra connection, is it to spread out the flow?
Can you please give a link to buy the solder you used to make this battery pack?
That was very good and I could follow it. THANKS
One question could you give a weight was that battery? I have stairs from my Apt. and its hard for us to carry bikes down and up. We already make trips bake up for our bags and I'd still like to limit that as possible.
That battery weighed about 1.7 kg or 3.7 lbs. Very small!
From the size - comparatively to a mans hand - I would speculate it is less than 10lbs / 4.5kg.
What do you think about using capacity checkers with balance functionality to balance batteries? Just bought one and thinking about use just a charge controller to manage over and under pack voltage and using the capacity checker to balance the series packs.
Hi Micah, great video series and book - the DIY Li Batt is a treasure trove of battery info.
I'm getting ready to construct a pack (my first) and wanted to ask for your opinion on using pure copper strips instead of pure nickel. As I'm sure you know, the current carrying capacity of copper is about 3-4 times better and the resistance about a quarter. Also, the cost (on Amazon*) is similar.
Do you have any advise (for or against) with using copper. I will be spot welding onto MJ1s - I've seen others on YT saying that spot welding copper (only) to cells is difficult and might need a 'copper-nickel sandwich' weld arrangement.
Any insight into this would be great.
Many thanks.
Awesome videos Micah, they are a great resource for novice ebike builders. I am currently working on an electric tandem bike and have found your videos more than helpful. Do you have any advice on how to get reliable and value for money batteries when ordering in bulk from Alibaba or Aliexpress?
Excellent video, thanks for sharing your knowledge!
Well that made it heaps clearer for me on my road to discovery thanks heaps. I have a question and thats about adding fuses to packs? Is it necessary if using a bms or only if no BMS ? How do you work out what size fuse to add? And what types of fuses are best?
Great video! I am just finishing reading your book DIY lithium batteries - great book. Have you ever tried to attach a GPS tracker to the battery pack? Thanks!
i enjoyed this video. I am explloring opening up a 36 volt lithium battery i have that i know has one or more cells that are not charging or are low charge.. I am thinking of getting the DIY lithium kit to put it all back together. I also want to sort out creating a USB out port for the pack to recharge cell phones etc. And I am also xploring builing a 5s or 48v pack for the same ebike to give me more speed. .. perhaps also building 2 packs to i have increased range capacity when i need it.
Cool! That answers a lot of questions I had floating around in my head :D
this video is very beneficial to beginners keep it up
Hello. I have 3 beautiful questions:
1. Can I use battery holders instead of connecting the terminals of a battery cells, then join the wires + -?
2. Is it necessary to use BMS while the batteries can be pull out and being charged with Li-ion Battery Charger?
3. Can ESC used in RC projects be an alternative to manage the outgoing voltage and current of the battery?
Thanks in advance for response!
I think the bms also prevents overdischarging. Maybe im wrong. Sort of 3volt cutoff. Interesting question.