Vruzend V4.0 kit: Building a DIY 18650 battery (no welds!)
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- čas přidán 18. 12. 2022
- Kits available at: www.kickstarter.com/projects/...
My book "DIY Lithium Batteries" on sale at amzn.to/2jbxvzS
My book "Ultimate DIY eBike Guide" on sale at: amzn.to/2BGx4Fn
The gear I use to make my videos:
Camera - Sony A6600: amzn.to/33twRHW
Lens - Sony 16-55mm F2.8: amzn.to/3K8X6nR
Thermal camera for iPhone/Android: amzn.to/2FikWvW
Drone for "follow me" filming: amzn.to/2UFOds5
Camera for invisible selfie stick shots: amzn.to/2Vb9D0r
Here are some of the products I use:
Bafang BBS01 kit: s.click.aliexpress.com/e/N0sm1W1w
Bafang BBS02 kit: s.click.aliexpress.com/e/EcGPWXRE
Bafang BBSHD kit: s.click.aliexpress.com/e/MMNrZUC0
250W complete e-bike kit: s.click.aliexpress.com/e/cQzxxhpm
500W complete e-bike kit: s.click.aliexpress.com/e/o6rnMv1q
1,000W complete e-bike kit: s.click.aliexpress.com/e/NGZvnq3Q
36V 15Ah Hailong (shark) battery: s.click.aliexpress.com/e/CAEvhRSY
48V 15 Ah triangle battery: s.click.aliexpress.com/e/234OZ5Kg
52V 20 Ah triangle battery: s.click.aliexpress.com/e/m0huJ2PI
All ebike batteries: goo.gl/7pAi9Z
All 18650 cells: goo.gl/hYWnwU
100W Flexible solar panel: s.click.aliexpress.com/e/DurJQaTe
100W Folding solar panel: s.click.aliexpress.com/e/C9raRNuM
Cycle Analyst: goo.gl/RsmE3N
The parts that I use for building batteries:
18650 cells: goo.gl/aEabAQ
18650 positive insulating washer: goo.gl/HBVOuc
Nickel strip: goo.gl/VIrNQq
Spot welder: goo.gl/KN3Uaw
BMSs: goo.gl/S6gSQx
Silicone wire: goo.gl/xmpbKD
Black 18650 cell spacers: goo.gl/hQxWF6
Vruzend cell spacers: goo.gl/5ReLqA
Large heat shrink tubing: goo.gl/6v1ow9
Small heat shrink tubing: goo.gl/OU3Z6u
Foam sheet for protecting battery: goo.gl/5e71tE
Kapton tape: goo.gl/D6BT57
Chargers: goo.gl/js0T0V
**Question response book giveaway rules**
When you guys asks questions in the comments of my videos, I'll try to answer them. If there are questions that I think would make a good video response, I'll choose them to do a longer segment. If I choose your question for a video response, you'll win a copy of my book The Ultimate DIY Ebike Guide (the paperback or the ebook), or my book DIY Lithium Batteries.
Here are some things that CZcams makes me say: This contest is not sponsored by CZcams and CZcams isn't affiliated with it. I'm supposed to provide a link to the community guidelines for CZcams (czcams.com/users/tcommunity_gu.... CZcams is not a sponsor of this "contest" and by participating, you are releasing CZcams from any potential liability, whatever that might be. Privacy notice: I won't steal your info. If you do win, you can choose to send me your address so I can mail you a paperback copy of the book (or some other prize if that changes) or you can send me an email address and I'll send you a copy of the ebook. I will do everything in my power to immediately forget your personal information afterwards.
Outro Music: BenSounds
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.
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.
That's definitely a handy little kit for building custom battery packs. Thanks for sharing!
I like this non-weld approach
I received my 4.0 kit, and built a 12v pack (4s3p) using 18650 LiFePO4 cells. Added a LiFePO4 BMS and it works perfectly!
Great tips to cover terminals to prevent any accidents. TY!!
I really enjoy learning about e-bikes and batteries! Thank you for sharing your knowledge. :)
Great battery idea. I could see these being used in ham radio for field and emergency operations.
I like the looks of these kits, thank you!
I would really like to build myself a spare 52v battery. Thanks for all your great videos!
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.
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.
Always learning something new from your videos, thanks.
Good kit that is safe and practical for people with no experience welding
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.
Nice a 2 year or so evolution. Well done
Very well explained, thank you very much. The tool is also very good.
I really like this kit!
Wow, that's an AWESOME DIY kit, if you want to avoid soldering or welding.
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.
Awesome kit! I’ll look into getting one
Still in the kickstarter!!!
Thanks! Great information for a spare battery for an ebike battery! Nice!
Thanks for doing what you do.
def a good kit to try out
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?
@@michaelm8159
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.
Thanks for another great video, love this concept, I might design and 3D print something similar.
That's a neat project.
Need to get one of those kit
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 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?
☹️
Love your products!
Always good info!
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 .
Desperately want to order one of these kits! Any idea when they might be back in stock?
Cool and easy build
I love this!
Nice video.
Great system!
Awesome system
I need to learn how to do this safely. Thanks
I need one of those!
Very educational, Thank you
That's really a great set-up.Thanks for demonstrating it/them.
Wow it's a pretty idea 💡
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.
Muy buen video !!, saludos desde Paraguay
I really enjoyed for informational video. Open my eyes to new possibles,
Any new 21700 series batteries
Great video!
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.
like it too. very good idea
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
backed it on kickstarter!
nice instructions
This is an amazing Kit and I want to try!
Thanks, I enjoyed
great idea
Great video. Thank you,.
i like the idea of this
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?
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.
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.
Are they going to make them for 21700 batteries? Easy to follow video, thanks.
That’s a cool new system. Do they offer packages with everything? Batteries, BMS, charger, etc
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.
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 CZcams 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.
Should be pretty solid build
Handy Kit.
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.
Hi, would like to ask how many amps I can add to my scooter battery, currently running 48v 15ah. my controller is rated 20ah. can I use 48v 45ah on my 20ah controller?
Love it
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.
nice video. ty
Kits OUT OF STOCK.? Oh well. Time to shop for a spot welder
very nice, please put it for sale in Turkey.
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 wonder if their some way to design them offset to minimize the space it takes up.
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.
Do you make a .stl or other CAD file available for the cell holders?
Nice!
this is a good one.. 😍
i would like the book about making my own batteries, didnt you make these 3d printed?
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.
Wouldn't coating the bus bars with a thin layer of dielectric grease help long-term or is that just over kill?
Hi, I'm a couple days late for the kickstarter campaign, how can I get the v4?
Is there any chance of a 21700 kit being available soon?
Cheers 👍
Very helpful, thanks 👍✌🖖🥃Safety, safety, safety. I may end up making a bike battery to extend my bike range yet...
nice!!!
great!
Is it possible just to make single battery molds into 36, 48, etc... as a whole plastic piece, that would save time building would it not, it would be more solid and the still leave the ends for adding loose battery molds in case you want to go from 36 volt and upgrade, even combine a 36volt to a 36volt and same to other, or mix and match.
Anything I’d like … or is it Anything you’d like? Anyway, thanks for another great video and HH!
I wonder if this can implement into powerbank ,so we can switch battery if its go bad
I like the no welding option.
Could a 52 volt pack and a 24 v pack be connected in series, for 76 volts total, be used with a Bafang BBSHD ?
would you say that aibaba ebike battery's are safe? also are you going to finish the sires where you build the cheapest ebike possible
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".
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
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.
How do I purchase these are they out of stock ?
Since the kickstarter ended, Is it possible to still buy this kit? If yes, where can I find it?