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Video Lemon powered Supercar- WORLD'S LARGEST Lemon Battery
12:03   |   4M+ views   |   09/21/2018 at 21:20


  • I was challenged to create electricity to support this beast
  • It's Volkswagens carbon-fiber dual engine
  • Faster than a Formula one electric supercar
  • For the upcoming infamous 12 and 1/2 mile Pikes Peak race to the top of a really high mountain in Colorado
  • And they gave me no further instructions on how they wanted it done
  • So I thought how cool to be to charge it up using one of those science fair lemon batteries
  • And since I'm pretty sure using only one lemon isn't going to cut it
  • My plan is to build the Guinness world record
  • World's largest lemon battery and when it comes to making ridiculous things no one is better at that than fellow YouTube engineer
  • William P. Osman. The first video I saw of yours was when you bio hacked your dog. How did that work?
  • Not well
  • we tried to dangle a hot dog in front of a dog's face on a
  • Mechanical backpack and then you can steer the hot dog
  • To try to get the dog to change directions and what he ended up doing was sitting down and eating him
  • So we've estimated this should take about three days for us to build and yet I've only allotted
  • Two minutes for this in the video. So you know what that means you plan on your videos
  • We didn't want our battery setup to just be a mangled mess of wires
  • So William had the brilliant idea to waterjet out a bunch of copper and zinc strips, which we can then assemble into racks
  • Who are the first half of the racks to be in parallel and that was in series with the second half of the racks
  • Which were also all in parallel and then at that point all we had to do was impale some lemons
  • Speaking of which in addition to harvesting from my own backyard
  • I visited some local farms and got their class two lemons
  • Which means they couldn't be sold in stores because they were either overripe miss shapen or too small
  • and when one finds oneself in possession of
  • 1232 lemons, turns out you can't not do this
  • So here we have the world's largest
  • Lemon battery and now is the moment of truth to see just how much power this could actually make for us
  • But in order to understand the results, let's first review how a lemon can even make power in the first place
  • The trick is picking the right metals to stick into the lemon in this case
  • Zinc really wants to get rid of electrons and then copper really wants to collect them
  • But they can't do that unless they're connected by some kind of electrolyte and that's the lemon juice
  • once that happens an electrochemical reaction occurs the bass and the electrons can now move and moving electrons is the very definition of
  • Electricity it's sort of like how the water up high in the full cup naturally wants to flow to the empty cup lower down
  • But it can't do that until you connect the two with the straw which allows the water to flow
  • So in this case, obviously the higher cup is the zinc
  • The lower cup is the copper and the straw is the lemon and so then the flowing water
  • represents our electricity or power and so with that we were measuring just under five volts and the short-circuit current is
  • Not great, Mark. Basically, our lemon battery is awful. Yeah like it's impressive
  • No, the fact that it works as well as it does is cool. But as well as it works is not
  • Well, does that make any sense? It makes no sense whatever you just said
  • And to quantify the suckiness better you can listen to a motor running off our 1,200 lemons
  • Versus a single double-a battery
  • So what was looking good for the car
  • But we weren't about to let three days of work go down the drain
  • So because the battery produces so little power we use a tiny tiny
  • High gear ratio motor fifteen hundred to one to charge up our potential energy
  • Which is more lemon so it should take about 15 minutes to lift this bag and then we can release that all at once
  • to activate our lemon juicing mechanism, basically
  • Like all of these guys are working together to like drain the lifeblood from one of their brethren. Maybe this is too dark
  • Okay, William moment of truth. I am so excited. Give me some of that. Cheers. Cheers
  • Wow refreshing
  • organic not worth
  • 10 hours amazing 12 hours totally worth it
  • This is the most expensive glass of lemonade you will ever have. Yes, that actually is a fact. It's a win in my book
  • I'm gonna finish this. I'm not
  • So we let the lemons trickle charge for a couple days
  • And after that the total power we harvested for the Volkswagen
  • Racing team was the equivalent of a single double-a battery and I should mention that since the race team is busy getting the car ready
  • For the race in Colorado. They have sent me this monstrous 48 kilowatt hour battery that can drive itself
  • So the plan is I will add any power we generate here in
  • California to this battery and then get this to them in time for the race in, Colorado
  • So the measly lemon power is now inside, but clearly I need to think of a plan B
  • Luckily I had an idea
  • Which is to take some pulleys and a skateboard wheel and a brushless motor then some custom machined aluminum plates and a steel
  • Cable to make a zipline with regenerative braking to charge a drill battery
  • And it seems to actually be working. All I needed now was a party with some family friends and their kids
  • This is how much energy is in the battery. We need to get it from empty all the way up to the full
  • That's where I need you guys because what happens is as you go down on this zipline
  • It charges the battery
  • The worst part about a zipline is when you have to go down and then drag it back up the hill
  • But I've got a little remote control here watch this
  • Is that cool? You guys want to ride that? you ready?
  • Mechanical advantage of the sloped Hill disguises it well
  • But the amount of energy they are adding to our zipline system here by running up the hill just one time is the same energy
  • used for the world record dead lift
  • And to provide power to their leg muscles
  • we repurposed our lemon battery lemons into fresh lemonade and
  • Everyone had to take a drink before running up the hill because as they say when life gives you 1200 lemons make lemonade
  • Then force kids to drink it to power your regenerative zipline
  • So the zipline was awesome
  • And we ended up charging up one of these portable drill batteries plus a little more. Now for those of you keeping track at home
  • Here's how I'm doing so far
  • the limits have enough power to move the
  • supercar about this far on a soccer field and then with the lemonade and the kids muscles in the zipline it can now travel an
  • additional two soccer fields
  • The problem is the race is 200 soccer fields long, which means if we were to try and charge the car
  • We'd be 198 soccer fields short. So clearly that kind of power will not be breaking any records
  • So I've got to come up with a plan C and to do that
  • I'm gonna harness the power of the Sun and in hindsight
  • I probably should have started here because if you think about it all the energy sources we use are actually
  • solar powered. Oil and coal and natural gas
  • It's just old decayed plants and swamps that originally got their power from the Sun using their leaves and photosynthesis
  • Even things like wind turbines are really solar powered because the wind blows when the Sun heats up the atmosphere
  • unevenly in the case of
  • hydroelectric dams the water got to the lake on the high side because of rain from the clouds and clouds a result of water that
  • Has been evaporated by you guessed it, the Sun. As humans
  • We are even solar power because we get our energy from plants or animals that ate plants
  • Which again get their power from the Sun
  • so if I was looking for some energy to fill up a battery instead of indirectly and
  • Inefficiently going through a bunch of different energy sources and losing a bunch at every step along the way
  • it makes way more sense to just go directly to the source
  • And so with that in mind I busted out the power tools and put twenty-four 100 watt solar panels over our garage
  • But there was a problem with this. When NASA sent the solar power twin Rovers to Mars in 2004
  • It didn't take long until the solar panels were
  • Totally covered in dust which effectively crippled the rover because they couldn't get as much energy from the Sun and this was a huge issue
  • But then we got lucky and a mini tornado came by and cleaned them off restoring the power
  • It turns out these mini tornadoes are actually pretty common on Mars which is why she is still driving around today
  • Nearly more than 14 years later. This is also in part why on the next Rover we sent to Mars
  • We just killed the issue altogether and slapped a nuclear reactor on the back and while California isn't Mars
  • It does get pretty dusty here. So to ensure that wouldn't happen to me
  • I invited over some really smart future engineers scientists and creators
  • and after explaining the problem and
  • demonstrating how severely it limits the power output from the panel's I challenged them to come up with and build a solution
  • And because our brains use up 20% of all the energy our body produces. I made them drink more lemonade to ensure
  • I got an optimal solution and so after pitching each other their ideas, they settled on one and got to work
  • Personally I thought it was brilliant and it worked extremely well and after they left I hooked it up to my lawn sprinkler system
  • So they go off for a few minutes once a week now and so after a few days of being bombarded by photons from space
  • We finally had the battery all charged up to full capacity
  • So in the end I learned a lot and we actually pulled it off
  • And now if you'll excuse me, I have an urgent delivery deadline to meet in Colorado
  • i like lemonade
  • Okay, you like it Eliza? Okay

Download subtitle


I was challenged by VW to make electricity to support their electric Supercar at Pike's Peak. The CRUSHED the course record by 15 seconds in the race. I got a little help from William Osman and some kids and without hurting any feelings one was better than the other.

Check out William's video here: /watch?v=oa5MRqrEdJI

The battery used to store and deliver the lemon, zipline, and solar power is a Mobi Gen built by FreeWire Technologies

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Summary: I was challenged to charge VW's electric supercar for the upcoming Pike's Peak race. I first built a lemon battery with William Osman. Then we tried a regenerative zipline. Then we tried solar power with a twist.

They are soft-



I make videos like this once a month all year long while supplies last:






Pike s peak lemon battery lemons fruit battery world record supercar potato battery nasa zipline mark rober regenerative braking diy william osman biohack dog fire rube goldberg electricity how electricity works renewable energy solar power fossil fuels kids having fun

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