Amazing! I hate spot welding cells together - not because it's bad, or doesn't work, but because if a cell dies, it's virtually impossible to replace. This is a much more 'environmentally friendly' solution. Also means I can easily reconfigure the pack if I need for a new build. I tend to use thick leather welding gauntlets to cover the ends of the pack when I'm working on it. They don't slip or fall off like foam sheets can.
Indeed Simon, that is also the reason why I like this idea for a kit, easily replacing a bad cell. Built correctly, the batteries will keep a good connection, even over bumpy ground.
eventho some people may argue about the amount of safety-first mentions and procedures you are following to build this kit, I really appreciate you take your responsibility on making this educational content as heavy as it should be regarding safe and preventive manipulation of lithium batteries. we don't know who will be the next enthusiast going from zero to full builds based only on their YT and internet acquired knowledge, and it's important to remark as many times as possible the amount of different ways things could go unexpectedly bad with this. pretty nice and good quality content btw, thank you.
Thanks Micah for a great video! Are the nuts self locking? Or is some blue loctite recommended? The kits are all 36V. Any suggestions how to use 2/3 of the 2nd kit after making a 48V battery? A link to BMS installation is also needed. And maybe a link to heat-shrink battery sacks? I have a heat gun...You do a great job and attention to safety measures is appreciated.
Just a thought - how about using one piece of rubber foam and cut out a "work window" from the middle. The window could be as long you need for the number of batteries in parallel by two batteries.
I hope the V4.0 kits hold up better than the V2.1 kits. I bought 2 of the V2.1 for a 52V pack. After building the pack it sat on a shelf in my shop, which stays at a constant 72 degrees, for 6 months while building my bike. When I started to install the battery pack fully half of the plastic terminal caps had split along the length. Contacted Vruzend about the problem and never received a reply.
It still amazes me that this cell-based battery-building process scales from small consumer electronics all the way up to luxury EVs. I would love to learn more about the different BMS systems available today and their application to different types of projects.
Start turning counter clockwise when you screw the caps, turn until the threads click together, then screw it in. This will prevent cross threading and damaging your soft plastic parts.
I did this while screwing something on my car (it was in a service / shop) and the 'mechanic" there ... "HA, you are screwing it backwards" 🤡 His boss knew why I was doing that and got mad at that mechanic 😅
Thanks for the video info. Looks 'easy' enough and I'm sure much less expensive than ordering a new battery pack from the manufacturer. One piece of advice I might suggest. When tightening down the buss bars, follow a 'Z pattern'. Bottom Left-Middle Right-Top Left, then follow with Top Right-Middle Left-Bottom Right. This should ensure 'even' pressure across every contact. Much like changing a car tire, skipping over every other stud, just snugly, then repeat the pattern to tighten up.
@@mitch-j5x I sent Kickstarter a message directly and they said it's up to us and the Vruzend because they don't want anything to do with it. They received their money and it's over. We are supposed to search around to find out how to contact the company. So much for Kickstarter's concern.
Absolute silence from them on the Kickstarter campaign since the end of February (when they said all rewards had been shipped) and it is now the end of April 2023. No way to communicate with them. No tracking. No reimbursement. Nothing but grief. If nothing else, I will have learned from the experience to NEVER EVER AGAIN finance another Kickstarter campaign again.
I have bought your kits in the past, since I didn't want to have to weld them. The problem I had both times was that they cracked within one year, making it useless for me. Will these new ones do the same thing?
Thanks for the tips, was there any padding around them ? Or maybe the plastics were against some metal frame / case directly ? I am thinking shocks and heat from batteries are a factor 🤔
I was wondering if you had a BMS that was ready to use with the new products. Of course, ring connectors make it idiot proof as my first preference. There are many types, but you might have favorites for the most needed scenario.
I wanted to know if you could do a video on actual Ebike battery performance. People in general don't know that Ll batteries are not linear in their discharge rates. I was at 10% Saturday and 0% in about 8 blocks later. I too was supprised! I was not expecting to walk 5 blocks to my destination! 😱 It took me an additional 15 minutes⏰ to my expected 25 minute trip! 😵
'no' battery is linear in their discharge but Li batteries are more linear than those over most of their discharge. It might be more your charge indicator being off or too simplistic
The problem isn't really that the performance of batteries isn't linear, it's that estimating the remaining charge state is hard. The discharge curve of Li batteries is very flat, there is nearly no change between 80 and 30% nominal capacity and often enough and often enough for battery protection reasons they don't get discharged below ~10%. However the voltage is also current dependent, so what looked like 10% without load will have collapsed to nearly protection circuit limited point once load is applied.
I bought several V1 kits and V2 kits good for prototyping I ride high power ebikes too much resistance and makes the battery packs a little big had some that just stopped making connection after a few months but I have been using them in my lower power projects over the last 5 years .
I love the idea of these kits but I plan to use ~300 cells and I can't justify an additional $400+. I know these are new and production costs are likely higher for you than for some big company. If they were half the cost I'd be considering it, if they were 1/3rd I'd probably do it - especially given the ability to replace dead cells w/o rebuilding the pack.
Looks like a cool kit. I wish they offered an all in one kit i.e. cells , holders , connectors, bms , insulators ,heat shrink and wire in different voltages and capacity.
I love the idea. seems like making the bus bars 2 through like 20 posts long would be beneficial. Looks like the kickstarter ended last year. how long until you can mass produce? I'm only seeing v1.6 and v2.1 on your site
For vehicles clamped battery’s will never be as good and reliable as a welded ones. You will always have microscopic movement that degrades the contact point with the harsh e bike environments. In my opinion clamped is only suitable for stationary packs.
Cool kit, as for home back up/off grid batteries...do you think this is the most bang for the buck? So many options for batteries, battery kits, types of LiFePo4 batteries.
Have you done the break test of the 4 poles of it? The rigidity test, heat cold, weather test? Will they last atleast 4 years without making the contacts loose?
I never thought I'd see these anymore on your channel. Might have to get some to review and share on my channel and Facebook page. These look much better and way more easier to build. I just built a 10s4p battery, I plan on sharing on my channel for a 42v ups. It actually looks like the 3p might fit what I need better. Great review👍👍👍👍👍👍
Might be hard to get backers. I went to the site and the current pledge was 5000$ and no backers. I'll have to check back in a week or 2 and hope they get backers and the pledge goes down considerably.
@@sspence65 I might have to check again. I have a TH-cam channel I'm starting back up in the next few weeks. Would be awsome to just test a battery pack with this. I've been filming like crazy, so I'll be releasing videos soon👍👍👍👍
Maybe you could comment on the cost comparison of these vs a welded style setup.. at what point does it make sense to buy a welder and use the cheaper kits?
These are only more cost effective if you’re building a small number of batteries. Depending on the size of the battery, you could break even on a spot welder after 2-3 packs. But cost isn’t the main advantage. It’s the modularity and repair. You can’t (easily) disassemble a spot welded pack or replace one bad cell.
I’d like to mention that if the thread will be bit longer it will help a lot more as i struggle with existing threads. So just to clarify that if you want to thigh up properly you’ll damage the thread itself.
Neat idea, just a shame that Vruzend haven't fulfilled my pledge and do not reply to questions on Kickstarter. Got notification that shipping had completed back in February, it's now getting on for June and I've not seen any sign of my three kits, nor heard anything from Vruzend. I'm not the only one either.
Hey @chasp3497 and @michaelm8159 - I'm trying to chase this down. I've heard from a few international backers that their kits never arrived. Did you guys get yours? I'm trying to follow up with the Vruzend team to see how many people are affected. The last they told me, all kits were shipped out in February I think.
Hey @@EbikeSchool i have not recived my kit yet aswell. Its so sad, we get no response or anything from vruzend, not even contacting them through their website....
When are you going to make a version 5.0 for 21700 batteries????? I can get them in the US for pretty cheap and they offer a lot more power per cell. Can get a 20ah battery with only 40 cells using Samsung 50E's
Companies that create these kits should focus on only common 15ah/20ah or 3p/4p/5p kits for the various voltages. This way the busbars can be simplified. Use whole piece “ladder” shape busbars instead of individual mini busbars. Faster and cleaner builds.
So i take it this avoids the damage to the positive end that could happen with the old design. What's hilarious I was wondering just before jumping on the site if there was anyone still using the kits and how they were handling the crunched positive connection.
I would put the positive parallel bus bar first, then series, and finish with the negative parallel bars. Only because of the height difference, stepping the bus bars accordingly could reduce stress/stretch in the long run on the series bars. Put simply, "this: _ is shorter than that: / even if they span the same horizontal distance".
Looks like a great way, without spot welding for a battery build and would be easy to change out problem cells because of no welds, but I would think to replace a ebike battery, with limited area, one would need to downsize as they look to take alot more space than a welded battery. I wonder too what type plastic they use. If a very durable type like HDPE (like 5 gal. buckets, milk jugs, laundry soaps, shopping bags), they should take alot, but if of a brirtle plastic, they may not be good for, say a dual battery on a ebike going off-road?
There are reports of the plastic crumbling and the batteries breaking. No need to describe the potential issues with a separated battery pack. Micah may be a scam artist. None of the Canadian backers of the Version 4 project received their reward kits. Many believe he didn't bother sending them. If so, that would make him a scam artist. No one has received feedback nor replies from him nor from Kickstarter to contacts and complaints. Zero feedback. There have been no replies to questions or requests for a sender name and address so we could check with the CBSA for any issues. Nothing.
Very nice system. I didnt look through your site but wonder if it makes sense to make bus bars of different length i.e. 2, 3, 4... for different cell set ups.
I have not really been very successful with the spot welding method, and this looks perfect. I'm just doing 3x7 for 24 volt. will give this a try, thanks.
I'm looking at a DL24P load tester for testing my LiFePO4 18650 pack. Trying to find a good LiFePO4 bms and a charger for low solar days. Any recommendations? Waiting for my Vruzend 4.0 kit to arrive.
If I have two batteries with BMS would I be able to wire them in parallel and even charge them in parallel without having to replace the BMS or re-wire the whole pack?
I must admit that with a 18+ minutes video i had expected also to see build in BMS, waterprofing and installing on a bike...But i appreciate the effort.
Are you going to do a video comparing LIPO4 batteries to LIFEPO4 batteries? The LIFEPO4 batteries are starting to come on the market, but the sources are scarce, and I'm concerned about the quality.
Great video You might like to know I am a blind subscriber and still manage to follow it with just the audio don’t worry I don’t plan to build one although I do want to supply the parts for a friend to build one for me can you advise me where to buy 18 650 let him iron phosphate cells and the appropriate BMS to provide for him by the way you might like to see the vehicle it will go on look up verne Pavreal on TH-cam and you’ll see my foreperson pedal powered solar hybrid electric bike Cheers
The positive connections have me a bit worried. The current is flowing from the bolt threads to the nut to the bus bars. Bolt threads are thin and don't transfer current well to a nut. I would like to have seen a bit of flat metal surface at the base of the bolt where the current would flow to the busbar. The negative connection looks like it has this.
Will we see the new Sodium-Ion battery be accepted in airplanes , when travelling with your e-bike ? Will the sodium-Ion battery be applied to e-bike technology? Anytime in the near future ?
I see you talking about Li-Ion batteries and it's the normal kind of batteries used everywhere. Do you know anything about the use of LiPo cells to power an ebike? Is it dangerous, what are your thoughts about it? Thanks, Rui.
Amazing! I hate spot welding cells together - not because it's bad, or doesn't work, but because if a cell dies, it's virtually impossible to replace. This is a much more 'environmentally friendly' solution. Also means I can easily reconfigure the pack if I need for a new build.
I tend to use thick leather welding gauntlets to cover the ends of the pack when I'm working on it. They don't slip or fall off like foam sheets can.
Indeed Simon, that is also the reason why I like this idea for a kit, easily replacing a bad cell. Built correctly, the batteries will keep a good connection, even over bumpy ground.
eventho some people may argue about the amount of safety-first mentions and procedures you are following to build this kit, I really appreciate you take your responsibility on making this educational content as heavy as it should be regarding safe and preventive manipulation of lithium batteries.
we don't know who will be the next enthusiast going from zero to full builds based only on their YT and internet acquired knowledge, and it's important to remark as many times as possible the amount of different ways things could go unexpectedly bad with this.
pretty nice and good quality content btw, thank you.
I received my 4.0 kit, and built a 12v pack (4s3p) using 18650 LiFePO4 cells. Added a LiFePO4 BMS and it works perfectly!
That's definitely a handy little kit for building custom battery packs. Thanks for sharing!
Thanks Micah for a great video! Are the nuts self locking? Or is some blue loctite recommended? The kits are all 36V. Any suggestions how to use 2/3 of the 2nd kit after making a 48V battery? A link to BMS installation is also needed. And maybe a link to heat-shrink battery sacks? I have a heat gun...You do a great job and attention to safety measures is appreciated.
Just a thought - how about using one piece of rubber foam and cut out a "work window" from the middle. The window could be as long you need for the number of batteries in parallel by two batteries.
I hope the V4.0 kits hold up better than the V2.1 kits. I bought 2 of the V2.1 for a 52V pack. After building the pack it sat on a shelf in my shop, which stays at a constant 72 degrees, for 6 months while building my bike. When I started to install the battery pack fully half of the plastic terminal caps had split along the length. Contacted Vruzend about the problem and never received a reply.
I had the same issue.
It still amazes me that this cell-based battery-building process scales from small consumer electronics all the way up to luxury EVs. I would love to learn more about the different BMS systems available today and their application to different types of projects.
Start turning counter clockwise when you screw the caps, turn until the threads click together, then screw it in. This will prevent cross threading and damaging your soft plastic parts.
I did this while screwing something on my car (it was in a service / shop) and the 'mechanic" there ... "HA, you are screwing it backwards" 🤡 His boss knew why I was doing that and got mad at that mechanic 😅
Thanks for the video info. Looks 'easy' enough and I'm sure much less expensive than ordering a new battery pack from the manufacturer. One piece of advice I might suggest. When tightening down the buss bars, follow a 'Z pattern'. Bottom Left-Middle Right-Top Left, then follow with Top Right-Middle Left-Bottom Right. This should ensure 'even' pressure across every contact. Much like changing a car tire, skipping over every other stud, just snugly, then repeat the pattern to tighten up.
Kickstarter is over. Where can you get these v4.0 kits now? I don't see them on your site. Looking to build a 7s11p battery
Great tips to cover terminals to prevent any accidents. TY!!
Bunch of us bought these on Kickstarter. Months later there is no reply to where they are or the battery holders.
Ya whats going on! I sent a message to you on kickstarter with no reply! Silence is not the way to deal with this dont you agree?
@@mitch-j5x
I sent Kickstarter a message directly and they said it's up to us and the Vruzend because they don't want anything to do with it. They received their money and it's over. We are supposed to search around to find out how to contact the company. So much for Kickstarter's concern.
Absolute silence from them on the Kickstarter campaign since the end of February (when they said all rewards had been shipped) and it is now the end of April 2023. No way to communicate with them. No tracking. No reimbursement. Nothing but grief. If nothing else, I will have learned from the experience to NEVER EVER AGAIN finance another Kickstarter campaign again.
Good kit that is safe and practical for people with no experience welding
I have bought your kits in the past, since I didn't want to have to weld them. The problem I had both times was that they cracked within one year, making it useless for me. Will these new ones do the same thing?
☹️
Thanks for the tips, was there any padding around them ? Or maybe the plastics were against some metal frame / case directly ? I am thinking shocks and heat from batteries are a factor 🤔
As of today there are no kits available directly from them or Amazon. What's going on?
I was wondering if you had a BMS that was ready to use with the new products. Of course, ring connectors make it idiot proof as my first preference. There are many types, but you might have favorites for the most needed scenario.
Great battery idea. I could see these being used in ham radio for field and emergency operations.
Desperately want to order one of these kits! Any idea when they might be back in stock?
Nice a 2 year or so evolution. Well done
Wow, that's an AWESOME DIY kit, if you want to avoid soldering or welding.
I would really like to build myself a spare 52v battery. Thanks for all your great videos!
I wanted to know if you could do a video on actual Ebike battery performance. People in general don't know that Ll batteries are not linear in their discharge rates. I was at 10% Saturday and 0% in about 8 blocks later. I too was supprised! I was not expecting to walk 5 blocks to my destination! 😱
It took me an additional 15 minutes⏰ to my expected 25 minute trip! 😵
'no' battery is linear in their discharge but Li batteries are more linear than those over most of their discharge. It might be more your charge indicator being off or too simplistic
The problem isn't really that the performance of batteries isn't linear, it's that estimating the remaining charge state is hard. The discharge curve of Li batteries is very flat, there is nearly no change between 80 and 30% nominal capacity and often enough and often enough for battery protection reasons they don't get discharged below ~10%. However the voltage is also current dependent, so what looked like 10% without load will have collapsed to nearly protection circuit limited point once load is applied.
Probably better to avoid discahring it below 10%, not worth the wear.
I bought several V1 kits and V2 kits good for prototyping I ride high power ebikes too much resistance and makes the battery packs a little big had some that just stopped making connection after a few months but I have been using them in my lower power projects over the last 5 years .
I love the idea of these kits but I plan to use ~300 cells and I can't justify an additional $400+. I know these are new and production costs are likely higher for you than for some big company. If they were half the cost I'd be considering it, if they were 1/3rd I'd probably do it - especially given the ability to replace dead cells w/o rebuilding the pack.
I really enjoy learning about e-bikes and batteries! Thank you for sharing your knowledge. :)
Still in the kickstarter!!!
Looks like a cool kit. I wish they offered an all in one kit i.e. cells , holders , connectors, bms , insulators ,heat shrink and wire in different voltages and capacity.
But he doesn't deliver what's ordered, and no followup after, so avoid him.
I love the idea. seems like making the bus bars 2 through like 20 posts long would be beneficial. Looks like the kickstarter ended last year. how long until you can mass produce? I'm only seeing v1.6 and v2.1 on your site
very nice, please put it for sale in Turkey.
I like this non-weld approach
For vehicles clamped battery’s will never be as good and reliable as a welded ones. You will always have microscopic movement that degrades the contact point with the harsh e bike environments. In my opinion clamped is only suitable for stationary packs.
So clamps only good for portable power banks? Why are their no 21700 swappable power banks for charging electronics?
Cool kit, as for home back up/off grid batteries...do you think this is the most bang for the buck? So many options for batteries, battery kits, types of LiFePo4 batteries.
Have you done the break test of the 4 poles of it? The rigidity test, heat cold, weather test? Will they last atleast 4 years without making the contacts loose?
I never thought I'd see these anymore on your channel. Might have to get some to review and share on my channel and Facebook page. These look much better and way more easier to build. I just built a 10s4p battery, I plan on sharing on my channel for a 42v ups. It actually looks like the 3p might fit what I need better. Great review👍👍👍👍👍👍
Might be hard to get backers. I went to the site and the current pledge was 5000$ and no backers. I'll have to check back in a week or 2 and hope they get backers and the pledge goes down considerably.
@@njfulwider5 wasn't hard to get the backers they needed. Fully funded.
@@sspence65 I might have to check again. I have a TH-cam channel I'm starting back up in the next few weeks. Would be awsome to just test a battery pack with this. I've been filming like crazy, so I'll be releasing videos soon👍👍👍👍
@@sspence65 is there a site you can purchase these?
@@sspence65 Fully funded, but some rewards not being delivered. NO Canadians andf one Swiss failed to get their Kickstarter items.
I like the looks of these kits, thank you!
I need to learn how to do this safely. Thanks
Maybe you could comment on the cost comparison of these vs a welded style setup.. at what point does it make sense to buy a welder and use the cheaper kits?
These are only more cost effective if you’re building a small number of batteries. Depending on the size of the battery, you could break even on a spot welder after 2-3 packs. But cost isn’t the main advantage. It’s the modularity and repair. You can’t (easily) disassemble a spot welded pack or replace one bad cell.
Always learning something new from your videos, thanks.
Are they going to make them for 21700 batteries? Easy to follow video, thanks.
I’d like to mention that if the thread will be bit longer it will help a lot more as i struggle with existing threads. So just to clarify that if you want to thigh up properly you’ll damage the thread itself.
Hey Mikey! Where can I purchase this kit?
absolutely David 😏
Kits OUT OF STOCK.? Oh well. Time to shop for a spot welder
Neat idea, just a shame that Vruzend haven't fulfilled my pledge and do not reply to questions on Kickstarter. Got notification that shipping had completed back in February, it's now getting on for June and I've not seen any sign of my three kits, nor heard anything from Vruzend. I'm not the only one either.
Same thing happened to me unfortunately, jury is out as to whether I get me money back!
Hey @chasp3497 and @michaelm8159 - I'm trying to chase this down. I've heard from a few international backers that their kits never arrived. Did you guys get yours? I'm trying to follow up with the Vruzend team to see how many people are affected. The last they told me, all kits were shipped out in February I think.
Hey @@EbikeSchool i have not recived my kit yet aswell. Its so sad, we get no response or anything from vruzend, not even contacting them through their website....
@@EbikeSchoolHey, its now january 2024 and i have not yet receivee anything. Is there any new information please??
That’s a cool new system. Do they offer packages with everything? Batteries, BMS, charger, etc
Very well explained, thank you very much. The tool is also very good.
I really enjoyed for informational video. Open my eyes to new possibles,
Any new 21700 series batteries
When are you going to make a version 5.0 for 21700 batteries????? I can get them in the US for pretty cheap and they offer a lot more power per cell. Can get a 20ah battery with only 40 cells using Samsung 50E's
Thanks for doing what you do.
That's really a great set-up.Thanks for demonstrating it/them.
Companies that create these kits should focus on only common 15ah/20ah or 3p/4p/5p kits for the various voltages. This way the busbars can be simplified. Use whole piece “ladder” shape busbars instead of individual mini busbars. Faster and cleaner builds.
Thanks! Great information for a spare battery for an ebike battery! Nice!
So i take it this avoids the damage to the positive end that could happen with the old design. What's hilarious I was wondering just before jumping on the site if there was anyone still using the kits and how they were handling the crunched positive connection.
Nice video.
I would put the positive parallel bus bar first, then series, and finish with the negative parallel bars. Only because of the height difference, stepping the bus bars accordingly could reduce stress/stretch in the long run on the series bars.
Put simply, "this: _ is shorter than that: / even if they span the same horizontal distance".
Looks like a great way, without spot welding for a battery build and would be easy to change out problem cells because of no welds, but I would think to replace a ebike battery, with limited area, one would need to downsize as they look to take alot more space than a welded battery. I wonder too what type plastic they use. If a very durable type like HDPE (like 5 gal. buckets, milk jugs, laundry soaps, shopping bags), they should take alot, but if of a brirtle plastic, they may not be good for, say a dual battery on a ebike going off-road?
There are reports of the plastic crumbling and the batteries breaking. No need to describe the potential issues with a separated battery pack.
Micah may be a scam artist. None of the Canadian backers of the Version 4 project received their reward kits. Many believe he didn't bother sending them. If so, that would make him a scam artist. No one has received feedback nor replies from him nor from Kickstarter to contacts and complaints. Zero feedback. There have been no replies to questions or requests for a sender name and address so we could check with the CBSA for any issues. Nothing.
How do I purchase these are they out of stock ?
That's a neat project.
Very nice system.
I didnt look through your site but wonder if it makes sense to make bus bars of different length i.e. 2, 3, 4... for different cell set ups.
I really like this kit!
Anything I’d like … or is it Anything you’d like? Anyway, thanks for another great video and HH!
Is there any chance of a 21700 kit being available soon?
Cheers 👍
I have not really been very successful with the spot welding method, and this looks perfect. I'm just doing 3x7 for 24 volt. will give this a try, thanks.
Are these kits ever going to be available to buy beyond the kickstarter? If not, can we just resin print them ourselves and buy some hardware?
Very helpful, thanks 👍✌🖖🥃Safety, safety, safety. I may end up making a bike battery to extend my bike range yet...
How would you compare the internal resistance of this set up to a spot welded system? Also, leakage.
They need to produce a single piece with 7S, 10S with a more substantial bus bar and Terminal port.
Awesome kit! I’ll look into getting one
I'm looking at a DL24P load tester for testing my LiFePO4 18650 pack. Trying to find a good LiFePO4 bms and a charger for low solar days. Any recommendations? Waiting for my Vruzend 4.0 kit to arrive.
Thanks for another great video, love this concept, I might design and 3D print something similar.
When will these be available again? Looks like they are sold out on the website.
I wonder if this can implement into powerbank ,so we can switch battery if its go bad
You need to add info. on BMS too
def a good kit to try out
If I have two batteries with BMS would I be able to wire them in parallel and even charge them in parallel without having to replace the BMS or re-wire the whole pack?
Love your products!
Wouldn't coating the bus bars with a thin layer of dielectric grease help long-term or is that just over kill?
I must admit that with a 18+ minutes video i had expected also to see build in BMS, waterprofing and installing on a bike...But i appreciate the effort.
I'm curious about BMS attachment and waterproof casing as well.
i would like the book about making my own batteries, didnt you make these 3d printed?
backed it on kickstarter!
Are you going to do a video comparing LIPO4 batteries to LIFEPO4 batteries? The LIFEPO4 batteries are starting to come on the market, but the sources are scarce, and I'm concerned about the quality.
when will the new kits be for sale on the site?
Always good info!
Should be pretty solid build
where can I buy tha t kit I really like me I bought yours books about batteries panels
Great video
You might like to know I am a blind subscriber and still manage to follow it with just the audio don’t worry I don’t plan to build one although I do want to supply the parts for a friend to build one for me can you advise me where to buy 18 650 let him iron phosphate cells and the appropriate BMS to provide for him by the way you might like to see the vehicle it will go on look up verne Pavreal on TH-cam and you’ll see my foreperson pedal powered solar hybrid electric bike
Cheers
I like the no welding option.
Hi went in on your website @ VRUZEND DIY Battery Kit. But can only find the version 2.1 kit, are the 4.0 kit not available anymore?
Thank you
Muy buen video !!, saludos desde Paraguay
The positive connections have me a bit worried. The current is flowing from the bolt threads to the nut to the bus bars. Bolt threads are thin and don't transfer current well to a nut. I would like to have seen a bit of flat metal surface at the base of the bolt where the current would flow to the busbar. The negative connection looks like it has this.
Cool and easy build
I love this!
Need to get one of those kit
Will we see the new Sodium-Ion battery be accepted in airplanes , when travelling with your e-bike ? Will the sodium-Ion battery be applied to e-bike technology? Anytime in the near future ?
seems like a good way to test a setup before going down the welding path
I need the company you got in from for 36 voit 48 voit 500watt
I want to buy some of these but the site says everything is sold out.☹️ Is this still in production?
I see you talking about Li-Ion batteries and it's the normal kind of batteries used everywhere. Do you know anything about the use of LiPo cells to power an ebike? Is it dangerous, what are your thoughts about it? Thanks, Rui.
Very educational, Thank you
This is an amazing Kit and I want to try!