How to Build an 18s6p Skateboard Battery! - (Inazuma 稲妻: Phase Two - Pt. 3)
ฝัง
- เผยแพร่เมื่อ 13 ก.ค. 2024
- In today's video, I build my 18s6p battery for my Raceboard! This incredibly powerful battery is an immense upgrade over the previous 14s8p I was running before; which I also raced with at ESK8con. Please read the description for additional warnings!
Building lithium-ion batteries at home can be a very dangerous thing to do, if you are not well versed in the dangers and things to avoid. In this video, I share the current best practices for most of the things I do. If you have any concerns about your ability to complete different steps in this video DO NOT replicate it. If you have any questions about things that are done in this video, please ask below, or join the esk8news forum and check out the battery builders club thread:
forum.esk8.news/t/the-battery...
The battery in this video uses Molicel P42A cells, which BatteryMooch rates for 30a. To support that large amount of discharge from each cell at a low p group amount like this, I added an extra set of welds above what I usually do for P42A. In addition, I tried a new technique (to me) by using tinned copper braid. I've seen a lot of other trusted builders use braid before and figured this high-powered setting was a perfect time to test it out. After doing some test solder joints I figured out a pretty decent method. Pre-heating the braid is helpful, but not entirely necessary if you are careful with your heat on the cells.
This battery will power my raceboard for a long time to come and has already served me really well in the practices I've done thus far. Hope you enjoy!
Check out the previous videos in this series, starting here:
• DIY Electric Longboard...
Check out the forum thread that I started here:
forum.esk8.news/t/inazuma-rac...
Please feel free to ask any and all questions in the comments!
Motors: China - flipsky.net/collections/e-ska...
US - boardnamics.com/product/bn638...
ESC: www.makerx-tech.com/products/...
Enclosure: www.eboardsperu.com/product/r...
Gear Drives: boardnamics.com/product/m1-at...
Battery: skyartpower.com/
Deck: redemberboa...
XMount: skatexboard.com/products/x-mo...
Remote: wavrx.com/product/iremote/
Leave any questions in the comments section!
Discounts (Some are affiliate links):
Exway: shrsl.com/3t7j3
$15 off use code RBEM
Onsra California: www.onsracalifornia.com/?ref=...
$80 off use code RBEM
Momentum Boards: www.momentum-boards.com/?srrf...
5% off use code rbemotion, rbemotion as representative
Flipsky: flipsky.net/?ref=rbe_motion
$10/off use code RBEM
ESKDIY:
Code RYAN2021
B-One Board: boneeboard.com/?ref=RBEM
Get $200 off with code RBEM
XBoard: skatexboard.com/?ref=RBEM
Get 8% off with code RBEM
Revel Boards: www.revelboards.com/?ref=RBEM
Get $20 off with code RBEM
Gyroor Board: code HOVER20 for Hovershoes
shrsl.com/3s3xj
Check out my gear below (these are affiliate links that help me out)
Main Camera: amzn.to/3j39fP8
Secondary Camera Equivalent: amzn.to/3DGYeuP
Overhead Camera: amzn.to/3BJS8tg
Lav Mic: amzn.to/3lJh12M
Panel Lights: amzn.to/2XblFge
Tube Light: amzn.to/3iZqMaX
Extra Light: amzn.to/3BIe0VX
Keep in touch with me and my projects on social media at the following:
/ rbe_motion
/
rbemotion
Create an account and message me on the skate forum:
forum.esk8.news/u/shuttershock
Business email for inquiries:
rbe.motion.info@gmail.com
Timestamps:
00:00 18S6P for BIG POWER
00:59 Laundry List
02:14 Fishpaper & Gluing
03:24 Wrapping
04:01 Prelim Layout
06:22 Nickel Arrives
07:21 Welding Montage
08:55 Discharge Lead Paths
09:48 Positive Lead Soldering
10:49 C+ Connection
11:35 Welding Positive End
12:24 Negative Discharge Soldering
14:06 Extra Precaution
15:08 Cells Ready for Soldering
16:21 Soldering Braid Intro
17:59 Braid Soldering Setup
19:28 Score Pads
21:47 Soldering Braid
25:30 Braid Attachment Continues
27:12 All Braid Soldered
28:24 Discharge Connector Soldering
29:15 Charge Port Wiring
30:52 Charge Port Wired
31:50 Balance Wires Start
33:15 Balance Wire Diagram
35:05 BMS B- and C-
35:58 Battery Complete!
38:01 Montage
Media used in this video:
Track: Dominic Strike - Heartbeat
Music Provided by Magic Records
Listen To The Original: • Dominic Strike - Heart...
Free Download: fanlink.to/o9ha
------------------------------
Music from Tunetank.com - วิทยาศาสตร์และเทคโนโลยี
I swear this dude makes some very clean battery setups.
Haha I appreciate it man! Thanks for watching
He's 💯% guilty of that offence
What a brilliant video. bit scary in some parts but now at least I know, battery cost is the biggest cost on a board and it's well deserved when done like this.
Thanks so much! Glad you enjoyed. It can definitely be a bit nerve wracking building big batteries like this but I'm happy to share the knowledge
@@RBEMotion Thank you and look forward to the next part
@@skfunk4550 Appreciate your support!
When your skateboard needs to pull a trailer home.
Hahaha more like when I need to 0 to 40 in 3 seconds
Love it! Keep em coming!
Thank you! Glad you enjoyed!
awesome video man. What spot welder were you using???
Thank you! I use a Kweld.
Last step would be wrapping the groups in foam to reduce rubbing and vibrations.
Yeah foam gets packed in the sides on this particular pack, as well as the thin layer beneath it in the enlosure.
could you get rid of all the soldering braided ribbon if you you folded over the nickel tabs toward each other so they overlap? then you can use the spot welder like on the ends of the cells. or would that not be durable enough to vibration?
You COULD, but it would no longer be a flex-tolerant pack. Also, welding nickel together like that is not super durable in the first place. If you were to use a PCB like Lacroix you could weld the nickel to that, but that's not exactly very accessible.
25:17 maybe use some parts of silicone heat resistant mats?
That's a pretty good idea, if they were thin enough that would work really well. Despite how thin the fr4 is, it still kind of made the nickel stick up a bit which makes the joint a little tighter than I'd like, so thickness is important.
Quick question - How do you determine what fuse size I should have for a battery pack? When I built my DIY I did not put one in but I'm noticing a trend with more and more people putting these in. What prompted folks to add these? Thanks mang !
Well off the bat, it's not a battery pack fuse. It's a charge port fuse, to protect the bms if the charge port were to be shorted or plugged in backwards. Usually I spec the fused based on how fast the bms can charge, which for LLT bms is usually 15a. So I'll put in a 20a or 25a fuse in there to help protect it. It's somewhat debated as to its necessity since most BMS are good at protecting themselves. However, I've replaced a melted charge port before so I still see value in it.
I'm only 19mins so sorry if you already covered this.
I didn't, but I replied to your other comment
⚡⚡⚡
🙏🙏🙏
Dude it’s crazy I have the same build! But I’m between 18s6p or 16s7p with these cells.´ for you the range is would be better to not start my 2nd pack in 16s ? Never did 18 before and I’m a bit worried about the capacity lost : 16s 32ah 18s 27ah 😅
If you don't need the extra speed just go with 16s, which esc are you going to use?
I love your content and builds you remind me a lot of Le Drib who flies FPV.
Can someone recommend me a place to buy the braid I can’t find any.
I have 120x 21700s for the pack but I still need some materials.
Thanks for the compliments! Braid can be tough to find, but there is some available on amazon if you look for desoldering wire or copper braid, something like that. You can also find it on aliexpress. "Tinned copper braid"
@@RBEMotion Thank you! I wasn’t sure what to look up and that is perfect.
@@SC-rk6zt Awesome, glad you were able to find it.
Great video! One question. I thought that people didn’t recommend using hot glue to hold cells together because it cracks and becomes brittle after time. Is this a different kind of hot glue that doesn’t do that?
+1
What kind of glue is that? Looks different from regular hot-melt.
@@PatrickEClearysilicone
Certain people have argued about this for a long time but in my experience good hot glue lasts perfectly fine. I have cells I glued in 2017 that are still holding together today. Some people argue for silicone, but others argue that since silicone is so soft, it lets the cells rub more than hot glue. Hot glue is easy, fast, and holds well. It is my opinion that it is the best for now. Silicone is a huge pain, takes a long time to dry, and gets absolutely everywhere. No judgement to people that would like to use it though, it works as well.
As a side note, all of the groups are further wrapped in fishpaper, and then taped off tightly with fiber tape. After that, they're welded together. I would be surprised if any of the cells ever manage to move at all.
It's just a brand of black hot glue that I've been using for a while. It's a high-heat kind of hot glue, and not all hotglue is created equal. Check out the ProjectFarm video for his opinoins, I've used Gorilla hotglue and this black stuff from Trendbox.
While that is a good option, I do not really use that to glue P groups together.
Which spot welder do you use?
I use Kweld exclusively, I have two actually.
Hi I’m building a battery pack 12s 6p 18650 cells ,I have a 60amp bms,will 60amp enough or I need more.
My motor are 5000w vesc 200 amp continuous.
Well, technically, it depends on if you want to run your discharge path through your bms or not. I run all of my BMS setups with the discharge bypassed, because I always want to have brakes, and don't ever want the possibility of having a cutout from overvolting or over drawing.
If you bypass discharge it doesn't matter at all. If you run the discharge through the bms, it may not be quite enough
What gauge wires for discharge and where to buy?
I used 10awg high strand silicone wire for the discharge cables, you can get them on Amazon or Aliexpress. I like to use BENTECHGO on Amazon.
Haha... Battery pack build!
Yes indeed! Thanks for watching
bro could not have picked thicker cable for charge port
I used 12 awg for that, which is admittedly slightly overkill, but I planned to charge with up to 20a at times, so it wasn't a big deal to oversize.
Inazuma, from genshin?😂
Haha is there an Inazuma in Genshin? I haven't played that game in 2 years 🤣
But no it's just Japanese for lightning
ur iron not powerful enough for braid
It worked just fine, and has continued to for the other packs I've used braid on. Also, fwiw, I've improved my technique since I built this and can do braid much faster. This was the first braid pack I did.
@@RBEMotion new video on braided pack anytime?