Tesla Batteries in an Electric Skateboard! 

4 years later, still waiting for the update on how to make this board actually work to full capacity 😭

Jake: "You're late" Wren: "Here's a video with 7 million views" Jake: "..."

When he said I’m gonna need your car i thought he was bout to jumpstart his board

Why does every modified battery Wren makes look like a bomb.

Thanks for the comments everyone!! I appreciate the feedback! It turns out I really underestimated the current draw to the motors. I understood that the batteries I used didn't have high power output, but my hypothesis was that using two packs to share the load would be enough to compensate. _Wrong!_ It turns out I need at least 4 or 5!! Dangit!! I know better, I should've done the math on this first. Geeky numbers section: So the motors are 2000W and the current draw is about 50 amps (at full speed). The battery system I added maxes out at about 20ish amps. The solution is to either use more packs in parallel, or make new packs with much higher power output ratings. So the issue had less to do with Voltage, and more to do with the battery's inability to provide enough energy fast enough. Again, this is just yet _another_ hypothesis. I won't know if I'm right until I test it again. Another video solving this maybe?

Everyone waiting for the follow up video He bought a car

I get this recommended every month for the last year

When putting the batteries on:” I don’t wanna damage it” Comes back from his ride: * throws it on the ground

Damn Brandon nice car

He needed a Battery Management System or "B.M.S." for short. There is one located on the Boosted Board, but it wont allow the onboard batteries to drop below 33volts. He needs a new B.M.S. to allow the Panasonic cells to match output voltage, to where both battery packs will run out at the same time. It will also make sure the cells are all equally charged to prevent a possible short or power surge.

As a non-skater, the best thing about this video is that he named his battery packs Kaladin and Kelsier.

I love that Wren loves Brandon Sanderson. The Kaladin and Kelsier batteries are great

The problem is not the voltage, its the power output of the NCR18650B, even at 2 strings in parallel they can output maybe 12A which is not enough to power your boosted board at full power. I successfully ran my DIY EV VW bus using LiFeP04 and tesla 18650 cells for 3 years. I have the answer to your problem, you want to collab?

my favorite episodes are ones like these, where you guys just tinker and build shit. So thanks for the great vlog!

7:51 “What if I just ignored you?” “I’d Call the police” *Nervous Laugh*

Maybe have the extra battery’s just charge the existing battery

5:13 the gun wall

WHERES PART TWO ITS ALMOST BEEN TWO YEARSSSSS

This has legit been popping up in my recommendation for like 3 years and it still won’t go away

2:47 Journey before destination, Radiant.

Next week in the news: Kid on highly modified boosted board explodes on highway

anybody else getting in recommened I thought this was new lmao

Honestly I'd love to see videos like this again. The day-by-day stuff

Some people can not understand how much science he had to learn to do this

Yay my dose of Wren arrived just in time

Wren, you need to monitor the cell voltages under load. at rest the multimeter won't give true readings because current is basically 0 so the cell chemistry has time to build up charge.

I love these vids of Wren just nerding out over his COMMUTE.

You are amazing, Wren!!! Even if it didn't quite work in the end, you had that crazy idea which you made possible, so still amazing!

WREN FOR YOUR BATTERY PACK: Below I have two possible solutions. However it should be noted that it is unhealthy for these two different types of batteries to be in parallel. Because of their different internal resistances, and therefore different voltages when depleted, the batteries undergo more strain, lowering their lifetime. I would suggest option 1 over option 2, but they could both improve performance. Option 1: Remove the boosted board battery pack from the series, and add a third and fourth battery pack in series with each other, but in parallel to your first two packs, to keep your voltage at 40. This way you have more amp hours overall, and all the battery packs have the same internal resistance and don't cause some of the power to be inaccessible. Option 2: (if you don't want to buy the batteries for the new pack) Simply add a switch to the boosted board batter pack, to be able to disconnect it. Once your boosted bored batter is low, then simply flick the switch, allowing the other batteries to release power. I would not recommend a voltage step-up circuit, for a few reasons. Step-up circuits are not 100% efficient, so you would lose some power in the process. Also, while your voltage would increase, your current would of course decrease, and I assume current is also a bottleneck for the batteries you added. Also if you want to see the charge of the batteries, getting a battery charging/control circuit is not expensive, and would both let you see the charge of the board, and allow you to more safely recharge your new battery packs. If you have any questions, feel free to ask! (I'm studying computer science at a university right now, but many of my hobbies involve electronics.)

Me two years ago: *working on drones and rc cars* RU-vid Algorithm: *How to place a dirt block in Minecraft* Me now: *doing nothing related to batteries* RU-vid Algorithm:

can't wait to try the tesla Batteries in one of our boards, thanks for the amazing video.

isn't it wierd that this "Wren builts something and comes to late to work" video has more views than many of your mainchannel videos ? you know the ones you put in all the hard work and labor XD

Don't know if you already got a resolution to this, but here's the answer: you need a DC to DC step up converter that will output 35 volts DC from whatever DC voltage the source is. However it would be somewhat difficult to find one that is rated at higher than 10 amps output, but you can fix that buy buying lets say 5 of those or even 10 of those and installing them in parallel output calibrated as the same output voltage - these DC to DC step up converters are generally very small, you would not need to worry about space consumption with them, however the larger of them can output a greater amount of amperage thus requiring much less of them (if you get one with the adjustable voltage output potentiometer) Assuming the motor of the skateboard requires no more than 50 Amps to operate as the highest prognosis, you can put 5 to 6 of these DC to DC step up converter to be covered for up to 60 amps of max current draw, that way, those batteries that you said can continue working down to 30 volts can continue to do so. the way this would work is: assuming your battery pack is down to lets say 33 volts, the controller would see a perfect 35 volts, as far as the controller of the device is concerned your battery is technically "full", but the minute voltage drops below 30 volts the whole thing would abruptly power off, you will feel the force of the power off as you will feel that acceleration just abruptly stopped and you will be on your own kinetic energy, but this is not really a problem, instead of gradually loosing power and speed you will just go from ON 100% full, to completely OFF at end end of the discharge of your battery pack. You might want to put another set of two rows in parallel maybe more to the down section of the board if there is any space, you will multiply your power potential, acceleration and torque by a factor of 2 times. This is great specially since these batteries will output more energy at a time the more you parallel them. I guess for this is down to your available usable space and if you are willing to compromise the look of your board by potentially adding additions that would affect the overall physical size of the board (eg: adding another set of two rows of battery backs by the side of the board that WILL be seen with additions of wood board extensions to further extend available space to house more batteries. Hey I know it would look "ugly" but at least it would work much better and stronger).

It’s simple! Just move the two cups of Tesla up.

Haha imagine you sing collenfurzes stuff for your outro haha

3 years later Jake: still brainstorming

What you need to do is buy another charger off eBay and make an outlet with the battery packs to charge the board while you ride. Since it needs to be unplugged to ride, take out the sensor in the circuit board

*Elon Musk wants to know your location*

wren: *does illegal thing* wren: *gets caught and honestly nearly arrested for doing illegal thing* wren: (surprised Pikachu)

Crazy how far boards have come since this video... I ride a WowGo 3 and get up to 12-14 miles on the standard battery they pair with the board. The fact that even alternative budget boards can compete is a good sign

you need to add a flux capacitor and get it up to 21.6 jigawatts. this will work with plutonium. it also works by attaching a Mr Fusion to the motor. The Mr Fusion will run off just about anything including banana peels and pizza crust. There's other ways to get up to 21.6 jigawatts but they're much more difficult and require a lightning storm. best of luck.

Overriding the boosted board original battery with another one of your packed batteries? That way it should check on the actual voltage of the "modded" battery and keep using the other two's. That's the first thing that came into my mind but I don't even know if it's possible!

Not sure why this video popped up in my recommends today, but I like it, and now I want a sequel.

the blinking is a pulse charge from memory, does that with one of my charger if a battery is fully flat to safely charge it while restoring the battery to wipe memory issues etc

"two bottles of water is more water than one" great job wren

OMG Im rereading The Stormlight Archive and a friend is reading Mistborn now. The Kelsier and Kaladin battery packs really made me smile.

2 types of investiture powering one fabrial. nice!

Its neat looking back at this, and noticing how he didn't have his one wheel for charging while he rides

*hits a bump* **batteries fly everywhere**

Brandon has a Tesla? goddamn

@Corridor Crew You should make a boost battery pack (it wouldn't need to be very big) that you can connect to the 2 large packs when the current draw is low to "boost" the current.

Loved how he used some of colonfurzes outro for his

Can we get "Wren Tinkers With Stuff" as it's own spin-off channel?

You, my friend, are a result of a night of passion between Casey Neistat and Linus Sebastian.

Kaladin and Kelsier huh? A Sanderson fan too. kewlll

Engineer, VFX Artist and Presenter. Amazing guy.

use a voltage converter, the use up a little energy by themselves buzt maybe it will give you even more, with the current situation. I Use one in a similar situation, but i dont know how good the work from small to big, mine change 52(down to ~30) to 24 Volts, mobile music amplifier, and it works quite well. Just be aware you need to at least cool it a little bit passively EDIT: yes, i didn´t think about the drop in voltage from the internal battery, hurr durr intelligent me. Also didn´t think about deep-deloading (is this how it works in english, not native, sorry, i mean the state of emptying the battery so much it kills it). Buuuut I have another idea: Get a new Driver fitting for the new battery packs, completely take out the internal battery, replace it (depending on its size) with one or more battery packs, cable that stuff up and you´re good to go. If there is no way to wire the driver in a fitting way to have feedback - which i can hardly imagine) set it up with a oneboardcomputer (again, is this right? smth like a raspberry pi, but that would be overkill), code a super simple app and send the batterystatus to your phone via bluetooth. Or be fancy and put LEDs in the board, itself and make a onboard (see what i did there?) statuspanel. that might in fact be way easier, one chip may be enaugh to control that with the info from the driver :D

Dude, use the Capacitor Tank Circuit concept to draw all the energy from the Battery.

10:28 Your biggest problem is: 1. DO NOT MIX DIFFERENT BATTERY TYPES!!

this has almost nothing to do with the video but I love the names you wrote on the batteries the books they are from are awesome

Wren, you are seriously good at explaining anything, always so entertaining and intelligent! it's time for you to call on The Hacksmith, check out his channel he is seriously awesome!

EYY I saw those Brandon Sanderson character names on those packs. Way of Kings and Words of Radiance are like my favorite books.

Wren’s happiness makes me happy

The end roll of the snowball machine gun was mark rober lol

7:35 that was the most intense chill conversation ever.

Wren Nye the science guy

Before you connect the fully charged external batteries, you need to bring all the batteries to roughly the same voltage!!! Otherwise, high currents flow that don't do your batteries any good But I love this video :D

1:57 I like how that guy behind not giving a fuck on what's happening 😂

KISS: Remove the original battery and replace it with another pack of Panasonics!

It has been 2yrs comon part twooooo 🤔🤨😣😭

Kaladin AND Kelsier? Now that's some POWER

Wren-“The cup can poor out all the water really fast like this, even though the bottle holds more it can’t poor out as fast because of the bottle neck like this” Niko- “why are you dumping water everywhere, the floor is drenched”

Tesla batteries aren't that big of a deal. They are just regular lithium-ion high-discharge batteries. Only major factor of a Tesla's power is that they use hundreds of those batteries. Using a Tesla battery to power any other everyday item isn't going to make your stuff turn into Optimus Prime.

I'm glad the Hover Junker money I paid went somewhere.

You guys turned me onto Ark Patrol. That band is dope. HI CREW!

Come on down to Burbank California where PF Chang‘s is here, it’s here baby

you should talk to @ElectroBOOM he is an electric genius

9:30 u remind me of the kids coming home from school 😂 walking in the house n dropping all there stuff in the floor 🤣

you can change the settings as first you use your booster battery and when its over then change the switch to your tesla battery something like the railway track lever

It’s funny because the ad that played before the video talked about the dangers of the battery with the green on the outside and why u shouldn’t use them 😂😂

the real question is ,is your battery pack in series or parallel , when they are series if one of your battery's dies it will cause you to lose use to the rest of your battery's power, and there is a power booster they are called transformers, but you don't want to use these since they will make your entire build inefficient for a small boost . your best bet is to - lower your motors power need by getting a new one - add more battery's -decrease the weight on the board to make it use less power - try new barring on our board or clean out the old ones - add a capacitor that you can plug in to the motors when your battery's are acting up

YO, YOU NEED TO SEE THIS! use a voltage booster. LIKE THIS SO HE CAN SEE IT

you should get one of the evolve skateboards. they are more like longboards though. up to 31 miles range on the gtr series.

Car driving pow Nick: lays on the back seat

9:30 when i get home froms school walking on a hot day

Ask to EEVblog, he is an excellent electronic engineer. He is part of the RU-vid comunity.

4:57 that reminds me of back to the future

5:12 when the quite kid has a tour and has to walk thru a hallway of his house .

Kelsier and Kaladin! Brandon Sanderson is a god damn genius

Damn dude i could never understand parallel until i watched you pour out the water damn thanks

He calls his Tesla Geoffrey. Is this named after the Top Gear prototype electric car? If so it needs a moustache.

i love the names for the batteries

Do you think you could use the custom battery packs to keep the board's original pack at full charge? Just an idea.

I think I'm on the rich side of youtube

Saw behind the scenes to Wren's water explanation and Carmichael is lying on the floor with his mouth open. That one in the Background is CG

2:47 Wait a minute. This guy is a Stormlight Archive and Mistborn fan. 👏👏

has a $~4k car & a nearly $~1.5k eBoard. there's a problem here.

Love the "Way of Kings" easter egg in there!

They should have a war between corridor crew and Hacksmith industries using all of their builds and cgi projects sorta like a movie.

you can use one that you made, then say to arduino when the battery used has a certain voltage then use the other one, so you can use all the effency of the first battery and a normal effency of the second one. hope i helped you and sorry for the english ehehe