Hi everyone. Thank you all for your views and your comments. I've got a number of comments on the volume of the music. I really appreciate everybody's feedback on this, and will be making changes in future videos. Check them out and let me know if I did any better. Cheers! Edit: To everyone who is asking for the music to be removed. I would if I could. As it stands I would have to reupload the video to do that, which is not an option right now. I do have a second aluminum air battery video already up with no music, and it features a better battery. Why that one is not more popular than this one is beyond me. Regardless you may like that one better. Check it out. ua-cam.com/video/8wEmjwfHqRI/v-deo.html
It's nice to have some music, but I would reduce the volume signifigantly, and only play it for the introduction, and towards the end of each section. The audio recording quality and production quality was good. Good luck with your channel!
@@GDMHificationranpitc glad you liked it. I have read some papers talking about gel electrolytes, but I have not had any success of my own. It is something I'm looking into currently. If I find anything I'll be sure to make a video out of it. Cheers!
@@MechanicGoneRogue it kind of reminds me of a hemp battery I saw a guy make.. (Robert Murray Smith) hint hint. hmmm thermal paste... I don't know just brainstorming. I wouldn't say I liked the video it was aiggght... I think you could do better. Maybe by adding some eye candy babes to the video... the UA-cam thirst is real #nolust.
Mechanic Gone Rogue there’s a free ware call “levelator” or “levelater”. It balance your high & low. (not related to your current issues of music competing with your important info or bad echo or placement of mic).
I agree, i can hardly hear him at low volume but he stops the music if you carry on watching . Edit: ... oh.... it comes back but its alright .. nice video.. i want to make this cus its so simple
I totally agree, I don't understand why DIY UA-camrs think music is necessary for instructional videos over vocals. Music usually ruins the video because it's too loud or a terrible choice. $5 eBay lapel mics, old Android phones and the ASR audio app are a fantastic solution for low budget sound.
Making use of the ua-cam.com/users/postUgkxcJ22tnHH9l1vjdIdEIG27iOG55P7LXI8 reconditioning plan, I just saved 2 auto batteries from being completely junked. The guides were very simple to follow. I wish I would have found this years ago! You may use the guide to recondition any battery type
Hey mate, excellent video but a bit improvement would be no music and a nice MIC. You can get little shotgun mics that plug right into your phone or gopro or whatever
I'm very glad you liked it. I've got a number of comments on the music. Thanks for letting me know what you think about it. It definitely helps for future videos. Cheers!!!
I think more people should be doing this sort of stuff at home. Now how do we increase the amperage? Imagine being able to recharge your cell phone by pouring some salt water into a canteen.
excellent video. something to point out with this, if you were to charge this battery it will produce chlorine, hydrogen, and oxygen gas. you might want to replace the electrolyte with sodium/potassium bicarbonate, sodium/potassium carbonate, or sodium/potassium hydroxide to avoid producing chlorine.
Cool, thanks for sharing. An inventor here in the UK developerd a more efficient version but the gov wouldn't fund it. I think he had problems getting rid of the powder that builds up, which is re-useable of course.
You know I think I heard of an ex military guy in the uk that did that. I didnt know about the he struggled with dealing with the powder build up. Glad you liked my video. Cheers!
Thanks for the lesson. I just learned something today that I often wonder about. Now I got questions about it, like how long do they last per use. Life expectancy. Recharge time. Up scaling. Down scaling. Actual applications for them. Questions off the top of my head about them air batteries. Thanks for sharing the video....
Glad you enjoyed my video. To answer your questions. They last about 1 day before the water evaporates. I havent tried recharging them, and scalability wouldn't really work with this design. Its more of a one time use proof of concept. As for real world use Ive read the U.S military has used these for years in remote observation stations (dont know how reliable that info is) and India is trying to make a version for electric vehicles. Hope that answers everything. Cheers!
@@MechanicGoneRogue thanks for sharing your info with me. I appreciate you getting back to me and I’m hoping you figure out how to make the battery last for a long, long time. The refinements are going to take some time to work out, but, the experimental stages will be fun for ya. Thanks for sharing your video.
No complaints, this is brilliant. Would it be possible to charge a phone. USB is 5v. So maybe. That would be so cool. I can re-examine my fantasy about going back in time and bringing my iPad. Probably end the world sooner.
no. its short circuit current was 3 milli amps. Maybe this thing could deliver 2 milli amps at 5v. A phone battery capacity is 3000 milli amps at 3.7v. It would take 1500 hours to fully charge the phone but im pretty sure this diy battery would be empty after a few minutes XD
So you're telling me that I can't find aluminum air batteries in a car?! You learn a new thing every day. In all seriousness, super impressed with your editing skills.
Interesting... Basic batter using salt water. If you used vinegar maybe it would make more miliamps. This is like a battery that would be made in a chemistry or physics class for study purposes. Normally you would never connect an amp meter directly across the power source. If you did this with a regular battery you could damage the meter. Current should always be checked through (in series) a resistance load. The way current of a battery is checked is to put a resistance load and measure the rate of voltage drop across the battery. Then the internal resistance of the battery can be calculated. By timing the rate of discharge over time the Amp hours can be worked out.
Good suggestion. I have tried it previously but I didn't have any luck with vinegar. Lately I have been playing around with the electrolyte composition. I want to move away from water based electrolytes so that the battery is not dependent on water constantly being added due to evaporation. I'm hoping to make a video on it in the future.
@@MechanicGoneRogue For a non aqueous based electrolyte, you can use urea and choline chloride to create a deep eutectic solvent. It's completely harmless, but smells a bit fishy. You'll push the potential per cell up to ~1V and it never dries out.
@Vino Veritas I like where your head is at. That is exactly where I am looking right now. Choline chloride is almost impossible to find up here in Canada so it's taking a while to get anywhere, but I am making progress.
Nice! I love your approach, cool to encourage amateur battery experimentation. I would try graphite spray lube for the carbon source as well. Thanks for sharing.
So glad you liked the video!!! I had tried graphite based spray lube before but it wouldn't conduct anything. The resistance is through the roof. I suspect the manufacturer added an inhibiter of some sort. Perhaps there's others out there without that, but I haven't found them yet.
I learned a lot. I learned that these things are stupid easy to make, stupid easy to mass produce, have almost no carbon footprint, and there is no reason we all aren't driving electric vehicles powered by these. I learned how corrupt the fossil fuel industry is as well since they are the only people possible that could stop this from being expanded on into the auto industry. I have read many articles about "new technology" that would revolutionize the auto industry and move us away from fossil fuels where the patents on these technologies were bought by fossil fuel people and then never used. I wasn't so sure that was true until now.
Hey that's pretty great! Probably someone already suggested using the box that the cards came in as a final stack holder. Also a dry erase board sketch of the assembly would be very helpful. Those of us willing to admit that we are jealous that we didn't think of producing this; salute your nice creative work here. Those little 3 volt motors would also work nicely.
If you want to build a far more powerful one stack the following. Aluminum cathode, paper towel, wood ash or baking soda paste electrolyte, steel wool with some graphite soda paste, steel anode. Each cell makes about 1.8V and current of about 30mA per square centimeter of cathode. It works a lot better if you mix some rust with the electrolyte paste. Good apocalypse project. ❤
@@MechanicGoneRogue Agree with above. Awesome video, but either knock down the music 15-20db or remove it completely. It's cancer for us with headphones.
Great project. I seen you only have 40 subs so I made it 41, just to give you a helping hand! Little word of advise, please turn the music down about 25%-50% so it's not louder than your voice. Besides that, great editing and great tutorial! ✌
This battery is WAY more powerful than the hot water in my bathroom shower or the UHF television stations in my area measured at the transmitting antenna terminals...you could almost run an ant's electric scooter halfway around the inside of a cheerio.
Cool video. The battery should work better if you use 2 different types of alkaline metal. Like copper and aluminum. Or silver and copper in between each layer. Just a suggestion lol cheers
Israeli company Phinergy and some Indian car manufacturers are getting together to produce batteries for vehicles. They use a filter system using silver apparently that removes co2from the air intake and improves performance with more oxygen. The electrolyte eventually will eat away all the cathode, and the batteries are not rechargeable, but recycling the aluminium hydroxide produced into aluminium is much easier than the lithium counterpart. The shelf life with the electrolyte in it s a problem, so it gets activated with water being pumped into the cells at the start of useage. Very high power to weight ratio. Something in the order of 50kg could give something like 500km or in that ballpark, by my reckoning. It is great for use for long distance travel, whilst a small range rechargeable pack would be great for daily commutes.
To generate more current, you could increase the size of the cells and make sure your graphite is sufficient and that you are adding enough electrolyte and spreading it evenly WITHOUT OVER SATURATING YOUR BATTERY!!! If you add too much it will likely short out. I suspect that the battery in this exercise had one shorted cell as 10 x .6v would be a bit more than 5.0x volts and the current went to over 11mAh and then dropped rapidly. There are some slightly more elaborate home made batteries that produce more voltage and current that you can make and 'store' for use when needed....search them :)
This works. But the salt water evaporates . You can see the volts dropping fast. In a couple days the terminals will corrode leaving NO power. Try a dry cell using calcium chloride. Damp rid. It sucks moisture out of the air . Keeping your battery producing longer with less corrosive activities. It will last much longer but maybe a little less power
I know right. Pesky disclaimers for liability purposes are always getting in the way of good fun, but at least if someone does try it at home they can't say I told them to 😏.
Fyi I think the proper disclaimer to cover your ass ( it's what I hear alot on other videos) " this video is for educational purposes only and by no means is encouraging you to try this yourself. " Or some shit like that.. thanks you bring something to the video that seems fun not like science class
Part of the issue with current delivery is the fact that aluminium oxide is in effect sapphire. This means your aluminium has an aerospace semiconductor grade insulator on it vastly reducing effective surface area. I have not got a clue how to get round that though without using some highly toxic chemicals, some of which I personally would not want to be in the same town as EG Chlorine Triflouride which wants to poison you, dissolve you, and set you on fire all at the same time.
It would be nice to see you charge a phone for a few moments with it. When the screen lights up people would be more impressed than a light but great job you're a bright fellow...
I haven't gotten all the way through yet, but I'll like it because of "don't try this at home." Loose translation: Do it at a friend's house, his mum isn't home. Observation, not the music. Salt water solution: Your solution is super-saturated, and as soon as it encounters a good substrate, it will crystallize, reducing the battery's current density. Instead of boiling, do this: Using room temperature distilled water, add salt until it dissolves. When you see a little salt in the bottom, you can't get any more salt into solution. This won't crystallize out. Decant the liquid, leave solids. Use non-iodized, as I am uncertain of the reactions possible with potassium iodide. Don't use sea salt, use the most pure you can get. Look at the ingredients. If it has anything but salt, it will reduce battery efficiency. Now, it's time to build me one of my own. I'm at my friend's! :) thanks for the how-to!
So glad you enjoyed the video, and I appreciate the constructive comment about the salt water electrolyte. I'll have to try it out in the future. Hope your experimentation goes well. Cheers!
So lets calculate the maximum power of this battery pack: You could argue,that it can handle P=U*I=5V*10mA=50mW. But this would be wrong! Cause when you measured the voltage the resistance of your multimeter was approx. (normal for multimeters) 10MΩ So the current was only I=U/R=5V/10MΩ=0.5μA So the power you got there at this resistor (the power the resistor consumed) was P=U*I=5V*0.5μA=2.5μW And when you shorted it, then the Amps where at max.10mA, but this was measured at a resistor of approx. 0.1Ω (measuring wire+measuring element in the multimeter) So the voltage was shorted out to U=R*I=0.1Ω*10mA=1mV so here the Power applied to the multimeter was P=U*R=1mV*0.1Ω=0.1mW But now the question is: When the resistance goes up from zero to inf. Where will you get the maximum of the power out of it. So what is the real maximum of the power? You could test it, by applying a variable resistor to it, while changing the resistance from near 0Ω to lets say 100KΩ, while measuring the voltage across it and then mapping the power by calculating P=U*I=U*U/R=U^2/R But this would take a while and wouldnt be so accurate, since the power would drop while you are measuring it. So now lets assume that the inner resistance of the batterie is constant (to be able to apply ohms law) To calculate the max power. So at first we will have to know the inner resistance. Since we know that the max voltage is 5V (at almoust zero load like multimeter at voltage measurement) And since we know that the max current at 0.1Ω resistance is 10mA we can calculate the inner resistance. So I=(U )/(R ges)=U/(Rm+Ri) So Ri=U/I -Rm=5V/10mA -0.1Ω= ≈500Ω So now the power is: P=Um*I=Rm*I*I= Rm*(Uges/(Rm+Ri))^2= =Rm*(5V/(Rm+500Ω)^2 You can now plot it and look the max up, or take the derivation in respect to Rm and calculate the value by setting it equal to zero. If i take the choice of the graphic calculator it tells me that the maximum is at 500 Ω and 0.0125W so 12.5mW. So to check the answer you can calculate: I=U/Rges=5V/(500Ω+500Ω)=5mA and U=Rm*I=500Ω*5mA=2.5V So P=2.5V*5mA=12.5mW. If you now calculate with higher or lower values of Rm you will get lower values of P. So for example with 501Ω you will get:0.01249999W and with 499Ω you will get the same value (probably not exactly but with this amount of accuraty)
But would be funny if you testet it with the method i explained with a variable resistor. Just go from 1000Ω down to 100Ω and look if there is a peak at 500Ω. I would be very thankfull if you did this. Because then we all can learn from it.
Very interesting. I will have to try this at some point down the road. Thanks for taking the time to explain all this. I agree it's amazing what someone can find with a few measurements. Cheers!!!
I hate to be the bearer of bad news, but this isn't an aluminum air battery, it's an aluminum copper battery (where the reactant is copper from the cathode). If you google 'aluminum copper soda battery' they demonstrate the same thing, but using coca-cola as the electrolyte, and no graphite. NurdRage, a professional chemist, made the same mistake in a video 10 years ago (though he used steel wool for the cathode instead of copper). If you try this with an inert conductor like carbon fiber instead of copper mesh you won't see much, if any current. Alternatively, you'll see that if you use an electrolyte with some dissolved copper sulfate (or other copper salt) you'll be able to get a lot more sustained power out of it. A limiting factor on any aluminum battery is that you need an electrolyte which can dissolve some aluminum, but not so much that it runs away and corrodes through the aluminum. For other metal-air batteries they go for slightly basic conditions (pH 12~13), though if you still want a working copper-aluminum battery you'd need to use ammonia as the base since it forms soluble copper complexes. If you want to make a true aluminum-air battery, you'd want to use some very dilute sodium hydroxide (~0.1% by mass) along with the saturated sodium chloride in the electrolyte.
Short circuit current of only 10 mA is not great, any other battery would crank amps and get hot! I shorted a used polaroid battery from an instant film pack and it pushed 30 amps!
Haha good observation. Yes it is on the weak side. You can only really get so far with aluminum foil and saltwater. I was more just trying to showcase the concept of a metal-air battery. Maybe in the future I can make some improvements to the power output. Cheers!
The issue is the resistance and the lack of Oxygen able to be adsorbed by the graphite/paint mixture. Use a much thinner binder and include Activated Carbon for the Oxygen. You can ditch the copper current collector as well.
The batteries in the newer Impossible Polaroid film packs are actually single-use lithium-ion batteries...I found this out when I cut one open and hacked a loogie onto it and it got hot, then poured Coke Zero into it and instant fire grenade...and it phrygian DOESN'T GO OUT...just like early celluloid motion picture film, it will continue to BURN UNDERWATER as it has it's own oxidizer...almost set the house on fire...luckily I was able to keep the surrounding area of the carpet cool, but the room was full of thick grey smoke with dark burn marks on the carpet...good thing I got the room vented out before my parents got home from grocery shopping or the smoke alarm went off...If you short the battery on the newer ones, make sure you don't have any valuable or irreplaceable items (including mixtapes) in the immediate area...
I used those flashlights for motion sensitive under cabinet lighting (on my channel). 400mA lights them brightly, so it looks like, under load, that is lower, maybe 200mA?
Do you know which brand of carbon spray? I tried one before, but it didn't work. The manufacturer had mixed something into it to increase the resistance of the spray. Which defeated the purpose for me.
Correction. Its a graphite spray. Not carbon. Its sold as a dry lubricant. The brand is called ZEP. I'm not sure if it's still sold. Its an old can. I found them at work. Also check out the dual carbon battery. Its rechargeable. Robbert Murray smith has an ok video on it
I tried using pencil lead previously but got fairly poor results. I suspect it's because of the binder used to hold the graphite together. I'm not sure if that's for all pencils or just the brand I was using, but I haven't tried pencil lead since then.
Very nice demo. Does the battery consume all of the metallic AL? If not you may want to mix some household bleach into the electrolytes, its pretty darn good at accelerating oxidation in AL but getting the ratio right so you don't burn up the battery too fast might be a trick. Also. I could only just hear you over the music at times, demos like this need to be mixed voice forward
I'm glad you like it. No there is usually some extra aluminum sticking around. It may just be because the water evaporates before it can be consumed. Good idea on the bleach. I'll have to give it a shot in future experiments. Also thanks for mentioning the music. Definitely going to be turning it down next time. Cheers!!!
@@MechanicGoneRogue This (slow reaction) is also the reason why your short circuit current is too low. Aluminium oxide film acts as an insulator greatly increasing the battery's internal resistance. Bleach or Sodium Hydroxide added to the electrolyte would dissolve the oxide film and will do wonders for the battery's power delivery. Oh, and lose that music.
This is a terrific DIY. Sorry for the harsh prev comment, but the sound quality is awful, and your content deserves better. One minor suggestion - a rubber band or binder clip instead of the final duct tape to hold it all together so it can be disassembled should the need arise.
Hey there @Ned Goldreyer Thanks a lot for taking the time to share your thoughts in both your comments. Happy to know that at least my content is decent. Since this video has been made I've been working on sound quality for future videos. Would love to hear your thoughts on them as well if you have time. A removable binder is a really good idea too. I should have thought of that. Cheers!
That's a really good question. The answer is not well at all. Some does get in through minor cracks or imperfections between the cells, but its a minimal amount. It's a design flaw that I worked to address in later models.
Hi everyone. Thank you all for your views and your comments. I've got a number of comments on the volume of the music. I really appreciate everybody's feedback on this, and will be making changes in future videos. Check them out and let me know if I did any better. Cheers!
Edit: To everyone who is asking for the music to be removed. I would if I could. As it stands I would have to reupload the video to do that, which is not an option right now. I do have a second aluminum air battery video already up with no music, and it features a better battery. Why that one is not more popular than this one is beyond me. Regardless you may like that one better. Check it out. ua-cam.com/video/8wEmjwfHqRI/v-deo.html
The music did detract from your interesting video.
It's nice to have some music, but I would reduce the volume signifigantly, and only play it for the introduction, and towards the end of each section. The audio recording quality and production quality was good. Good luck with your channel!
@@MechanicGoneRogue hey there cool video is there a way to make a gel or oil electrolyte for a longer lasting battery?
@@GDMHificationranpitc glad you liked it. I have read some papers talking about gel electrolytes, but I have not had any success of my own. It is something I'm looking into currently. If I find anything I'll be sure to make a video out of it. Cheers!
@@MechanicGoneRogue it kind of reminds me of a hemp battery I saw a guy make.. (Robert Murray Smith) hint hint. hmmm thermal paste... I don't know just brainstorming. I wouldn't say I liked the video it was aiggght... I think you could do better. Maybe by adding some eye candy babes to the video... the UA-cam thirst is real #nolust.
U have content but please use lower music volume . Good luck
Thank you very much. I definitely will be lowering the music in future videos. I've got a lot of good feedback on it this time around. Cheers!!!
Mechanic Gone Rogue there’s a free ware call “levelator” or “levelater”.
It balance your high & low. (not related to your current issues of music competing with your important info or bad echo or placement of mic).
I agree, i can hardly hear him at low volume but he stops the music if you carry on watching
.
Edit: ... oh.... it comes back but its alright .. nice video.. i want to make this cus its so simple
I totally agree, I don't understand why DIY UA-camrs think music is necessary for instructional videos over vocals. Music usually ruins the video because it's too loud or a terrible choice.
$5 eBay lapel mics, old Android phones and the ASR audio app are a fantastic solution for low budget sound.
@@MechanicGoneRogue the musics not that loud you should look into sidechain compression, it basically ducks the music down when your voice is present
Making use of the ua-cam.com/users/postUgkxcJ22tnHH9l1vjdIdEIG27iOG55P7LXI8 reconditioning plan, I just saved 2 auto batteries from being completely junked. The guides were very simple to follow. I wish I would have found this years ago! You may use the guide to recondition any battery type
Hey mate, excellent video but a bit improvement would be no music and a nice MIC. You can get little shotgun mics that plug right into your phone or gopro or whatever
I'm very glad you liked it. I've got a number of comments on the music. Thanks for letting me know what you think about it. It definitely helps for future videos. Cheers!!!
@@MechanicGoneRogue definitely, better microphone! It is bit hard to follow because of the sound.
@@MechanicGoneRogue the music wasn't bad or anything, just between the music and the no mic sometimes it was hard to hear ya.
Wonderful video, but please, please hold the music. It's really distracting and it's sort of the opposite of intellectual.
Agreed, even just lowering the music volume would help.
"Don't try this at home!" - does it at home on the dining table :'D
I think more people should be doing this sort of stuff at home. Now how do we increase the amperage? Imagine being able to recharge your cell phone by pouring some salt water into a canteen.
@@Kelvari7882 I totally agree! Thats why i'm doing stuff at home that is not recommended! :)
excellent video. something to point out with this, if you were to charge this battery it will produce chlorine, hydrogen, and oxygen gas. you might want to replace the electrolyte with sodium/potassium bicarbonate, sodium/potassium carbonate, or sodium/potassium hydroxide to avoid producing chlorine.
@Nature Nerd No, they need to be recycled.
That is really cool. I'm impressed. Great for people who have no power or batteries.
Thanks alot. Yah I agree the concept has the potential for alot of applications. That's one of the reasons I enjoy playing around them. Cheers!
u are good keep going world need people like u good luck
Thanks a lot mate! That's encouraging to hear. Cheers!
Cool, thanks for sharing. An inventor here in the UK developerd a more efficient version but the gov wouldn't fund it. I think he had problems getting rid of the powder that builds up, which is re-useable of course.
You know I think I heard of an ex military guy in the uk that did that. I didnt know about the he struggled with dealing with the powder build up. Glad you liked my video. Cheers!
yo u are the most modest youtuber ever good job
I'm really happy to hear that. Thanks so much for the comment. Cheers!
Thanks for the lesson. I just learned something today that I often wonder about. Now I got questions about it, like how long do they last per use. Life expectancy. Recharge time. Up scaling. Down scaling. Actual applications for them. Questions off the top of my head about them air batteries.
Thanks for sharing the video....
Glad you enjoyed my video. To answer your questions. They last about 1 day before the water evaporates. I havent tried recharging them, and scalability wouldn't really work with this design. Its more of a one time use proof of concept. As for real world use Ive read the U.S military has used these for years in remote observation stations (dont know how reliable that info is) and India is trying to make a version for electric vehicles. Hope that answers everything. Cheers!
@@MechanicGoneRogue thanks for sharing your info with me. I appreciate you getting back to me and I’m hoping you figure out how to make the battery last for a long, long time. The refinements are going to take some time to work out, but, the experimental stages will be fun for ya.
Thanks for sharing your video.
I *am* going to try this at home, at school, maybe at work, certainly on a deserted island, and then I’ll make a bigger one.
Awesome to hear!! Happy building.
Wow thanks MGR! Best video out there for making this battery! Its easy to follow and you did a really good job explaining it!!
I'm very happy you enjoyed it!!! Cheers :)
You did great!
You say not to try this at home...
But that's all I wanna do now!! 😂😂
Hahaha, annoying disclaimers getting in the way of all that fun 😏
@@MechanicGoneRogue 😂😂😂
You have to teach my Chemistry class!! Well done.
Maybe one day. Thanks, I'm glad you enjoyed my video.
Wooo! learning how to make batteries at an average rock concert ✊✊
Haha it's the best place to learn!
No complaints, this is brilliant. Would it be possible to charge a phone. USB is 5v. So maybe. That would be so cool. I can re-examine my fantasy about going back in time and bringing my iPad. Probably end the world sooner.
no. its short circuit current was 3 milli amps. Maybe this thing could deliver 2 milli amps at 5v. A phone battery capacity is 3000 milli amps at 3.7v. It would take 1500 hours to fully charge the phone but im pretty sure this diy battery would be empty after a few minutes XD
So you're telling me that I can't find aluminum air batteries in a car?! You learn a new thing every day. In all seriousness, super impressed with your editing skills.
Well they aren't in cars yet 😏 maybe one day I'll make one that's good enough for a car. Thanks a lot 😁
Yess!! And those time stamps 👏👏👏🔥
Gotta keep the videos looking as professional as possible 👌
@@MechanicGoneRogue yess 🙏 it's so good! 😊😊
Gee Thanks !!! 😊😊😊
Cool video, 5V is actually pretty good
Thank you. So glad you enjoyed the video. Cheers!!!
Cell phones run on 5 volts, why not light up a cell phone screen for a few moments to really impress...
No they don't. 3.7 volts.@@johnhopson4784
You are the most lovely honest and Sincere Man
Thank you so much :)
Interesting... Basic batter using salt water. If you used vinegar maybe it would make more miliamps. This is like a battery that would be made in a chemistry or physics class for study purposes.
Normally you would never connect an amp meter directly across the power source. If you did this with a regular battery you could damage the meter. Current should always be checked through (in series) a resistance load. The way current of a battery is checked is to put a resistance load and measure the rate of voltage drop across the battery. Then the internal resistance of the battery can be calculated. By timing the rate of discharge over time the Amp hours can be worked out.
Good suggestion. I have tried it previously but I didn't have any luck with vinegar. Lately I have been playing around with the electrolyte composition. I want to move away from water based electrolytes so that the battery is not dependent on water constantly being added due to evaporation. I'm hoping to make a video on it in the future.
@@MechanicGoneRogue For a non aqueous based electrolyte, you can use urea and choline chloride to create a deep eutectic solvent. It's completely harmless, but smells a bit fishy. You'll push the potential per cell up to ~1V and it never dries out.
@Vino Veritas I like where your head is at. That is exactly where I am looking right now. Choline chloride is almost impossible to find up here in Canada so it's taking a while to get anywhere, but I am making progress.
@@MechanicGoneRogue please use potassium hydroxide if you have the time. Love your video.
@@eone2345 Thanks. I'm glad you liked it. I'll see what I can do. Cheers!!!
Nice! I love your approach, cool to encourage amateur battery experimentation. I would try graphite spray lube for the carbon source as well. Thanks for sharing.
So glad you liked the video!!! I had tried graphite based spray lube before but it wouldn't conduct anything. The resistance is through the roof. I suspect the manufacturer added an inhibiter of some sort. Perhaps there's others out there without that, but I haven't found them yet.
Now what can we do to fix the Auto battery?
Thanks
If you would use just K2CO3 with water as the electrolyte you can almost get 3x the voltage out of this battery !! Just try it out !
Regards, Stefan.
But then he would be creating a alkaline 🔋 😅
I learned a lot. I learned that these things are stupid easy to make, stupid easy to mass produce, have almost no carbon footprint, and there is no reason we all aren't driving electric vehicles powered by these. I learned how corrupt the fossil fuel industry is as well since they are the only people possible that could stop this from being expanded on into the auto industry.
I have read many articles about "new technology" that would revolutionize the auto industry and move us away from fossil fuels where the patents on these technologies were bought by fossil fuel people and then never used. I wasn't so sure that was true until now.
I'd like to see how long it would last connected with that load. Good job though :)
Glad you liked it. I've actually got a lot of people asking about that so hopefully I can cover that in a future video. Cheers!
Hey that's pretty great! Probably someone already suggested using the box that the cards came in as a final stack holder. Also a dry erase board sketch of the assembly would be very helpful. Those of us willing to admit that we are jealous that we didn't think of producing this; salute your nice creative work here. Those little 3 volt motors would also work nicely.
Thank you @clavo. So glad you liked the video, and thank you for the suggestions too. Hopefully I can include them in future videos. Cheers!
Congrats on 5000 views for one video!!!!. Ps, I commented when it was at 4,929......but by the time this is seen it will probably be 5,000
Hahaha thanks!!! Yes I saw it well past 5k views.
now almost 60k
@@mattdathew2794 100,000 now! it's really popping of.
If you want to build a far more powerful one stack the following. Aluminum cathode, paper towel, wood ash or baking soda paste electrolyte, steel wool with some graphite soda paste, steel anode. Each cell makes about 1.8V and current of about 30mA per square centimeter of cathode. It works a lot better if you mix some rust with the electrolyte paste. Good apocalypse project. ❤
That's sounds pretty powerful. Thanks for the suggestion. Do you know if its rechargeable?
Good vid - lose the music, its really annoying
Glad you liked it. Thanks for your feedback on the music.
@@MechanicGoneRogue Agree with above. Awesome video, but either knock down the music 15-20db or remove it completely. It's cancer for us with headphones.
Awsome buddy,make it little more refined and controled.
Glad you liked it! Will do. I'm actually working on version 3.0 now. It's looking a lot better so far.
Great project. I seen you only have 40 subs so I made it 41, just to give you a helping hand!
Little word of advise, please turn the music down about 25%-50% so it's not louder than your voice. Besides that, great editing and great tutorial! ✌
Really appreciate that!!! And thanks for the advice on the music. Cheers
Buy a cheap mic for your phone/camera. Makes a world of difference for your videos.
You know I hadn't even considered a mic before. Good idea!!!
when you measure current ampere, it means that you do short circuit.. the current will drop shortly.. that's why led light are not bright..
Think that Video is going to blow up
It would be awesome if it did :)
This battery is WAY more powerful than the hot water in my bathroom shower or the UHF television stations in my area measured at the transmitting antenna terminals...you could almost run an ant's electric scooter halfway around the inside of a cheerio.
Cool video. The battery should work better if you use 2 different types of alkaline metal. Like copper and aluminum. Or silver and copper in between each layer. Just a suggestion lol cheers
Glad you liked the video, and thanks for the suggestion too. Maybe I can try that in the future. :)
Well done m8. Very little on the practical side of these things... Anywhere actually! 🙂
You hit the nail on the head. That is exactly why I made this video. I figured someone had to do it. Very glad you liked it!!!
Israeli company Phinergy and some Indian car manufacturers are getting together to produce batteries for vehicles. They use a filter system using silver apparently that removes co2from the air intake and improves performance with more oxygen. The electrolyte eventually will eat away all the cathode, and the batteries are not rechargeable, but recycling the aluminium hydroxide produced into aluminium is much easier than the lithium counterpart. The shelf life with the electrolyte in it s a problem, so it gets activated with water being pumped into the cells at the start of useage. Very high power to weight ratio. Something in the order of 50kg could give something like 500km or in that ballpark, by my reckoning. It is great for use for long distance travel, whilst a small range rechargeable pack would be great for daily commutes.
To generate more current, you could increase the size of the cells and make sure your graphite is sufficient and that you are adding enough electrolyte and spreading it evenly WITHOUT OVER SATURATING YOUR BATTERY!!! If you add too much it will likely short out. I suspect that the battery in this exercise had one shorted cell as 10 x .6v would be a bit more than 5.0x volts and the current went to over 11mAh and then dropped rapidly.
There are some slightly more elaborate home made batteries that produce more voltage and current that you can make and 'store' for use when needed....search them :)
Lower music (obviously) and a remote tie clip mic. That way you will make your videos much easier to watch and listen too.
Noted! Thanks for the tips :)
Let's get this video to 50 thousand views! YAAA!
I like your enthusiasm. By all means, be my guest.
Pppffft almost 90 thousand views pooooog
@@MechanicGoneRogue 100,000 YESSS
Yah it's really getting some traction!!!
This works. But the salt water evaporates . You can see the volts dropping fast. In a couple days the terminals will corrode leaving NO power. Try a dry cell using calcium chloride. Damp rid. It sucks moisture out of the air . Keeping your battery producing longer with less corrosive activities. It will last much longer but maybe a little less power
"Don't try this at home."
But .. where should we try it then? Isn't trying it at home is the core idea of the DIY videos?
I know right. Pesky disclaimers for liability purposes are always getting in the way of good fun, but at least if someone does try it at home they can't say I told them to 😏.
Someone else's home so if things go bad it's ok you can just go home....lol
Fyi I think the proper disclaimer to cover your ass ( it's what I hear alot on other videos) " this video is for educational purposes only and by no means is encouraging you to try this yourself. "
Or some shit like that.. thanks you bring something to the video that seems fun not like science class
@@jeremysmith7888 Or like Crazy Russian Hacker said, "Safety is number one priority."
@@jeremysmith7888 Dang that wording is spot on. I'm totally using it. Glad you liked the video :)
Great stuff! Would love to see some of the theoretical side explained as well. thank you.
Really glad you liked the video. Yes, hopefully that will be a future video topic. Thank you for the feedback. Cheers!!!
Well done.
Why thank you. Glad you enjoyed the video.
Part of the issue with current delivery is the fact that aluminium oxide is in effect sapphire. This means your aluminium has an aerospace semiconductor grade insulator on it vastly reducing effective surface area. I have not got a clue how to get round that though without using some highly toxic chemicals, some of which I personally would not want to be in the same town as EG Chlorine Triflouride which wants to poison you, dissolve you, and set you on fire all at the same time.
Interesting! Try a lapel microphone to get rid of the room reverb.
Glad you enjoyed it. I actually just got one of those. I've only uploaded one video with it so far. It really improves the sounds quality.
Fun video but I highly recommend using less or at least quieter music, the music makes the video very hard to watch, good luck with your channel.
Noted! Glad you liked the content at least. I appreciate you taking the time to let me know. Cheers!
Nice can they be recharged Can you do a bigger on in volt and sice
It would be nice to see you charge a phone for a few moments with it. When the screen lights up people would be more impressed than a light but great job you're a bright fellow...
Good idea! I should give that a shot. Glad you enjoyed the video mate. Cheers!
Good tutorial spoilt by loud music. Couldn't hear what you were saying.
Thank you. I'm glad you liked the video. I appreciate your feedback on the music. I'll definitely change it for next time. Cheers!
"Don't-try-this-at-home"
- procedes to make least dangerous battery on the planet
🤣🤣🤣 one can never be too careful.
very good, i like very
Thanks :) Glad you enjoyed it!
Aluminum graphite cells can be easily charged to more than 2.6 volts individually
Oh cool. Can't say I've seen a voltage that high from recharging them before. Where did you find that out?
I haven't gotten all the way through yet, but I'll like it because of "don't try this at home." Loose translation: Do it at a friend's house, his mum isn't home. Observation, not the music.
Salt water solution: Your solution is super-saturated, and as soon as it encounters a good substrate, it will crystallize, reducing the battery's current density. Instead of boiling, do this: Using room temperature distilled water, add salt until it dissolves. When you see a little salt in the bottom, you can't get any more salt into solution. This won't crystallize out. Decant the liquid, leave solids. Use non-iodized, as I am uncertain of the reactions possible with potassium iodide. Don't use sea salt, use the most pure you can get. Look at the ingredients. If it has anything but salt, it will reduce battery efficiency.
Now, it's time to build me one of my own. I'm at my friend's! :) thanks for the how-to!
So glad you enjoyed the video, and I appreciate the constructive comment about the salt water electrolyte. I'll have to try it out in the future. Hope your experimentation goes well. Cheers!
So lets calculate the maximum power of this battery pack:
You could argue,that it can handle
P=U*I=5V*10mA=50mW.
But this would be wrong!
Cause when you measured the voltage the resistance of your multimeter was approx. (normal for multimeters) 10MΩ
So the current was only
I=U/R=5V/10MΩ=0.5μA
So the power you got there at this resistor (the power the resistor consumed) was P=U*I=5V*0.5μA=2.5μW
And when you shorted it, then the Amps where at max.10mA, but this was measured at a resistor of approx. 0.1Ω (measuring wire+measuring element in the multimeter)
So the voltage was shorted out to
U=R*I=0.1Ω*10mA=1mV
so here the Power applied to the multimeter was P=U*R=1mV*0.1Ω=0.1mW
But now the question is:
When the resistance goes up from zero to inf. Where will you get the maximum of the power out of it. So what is the real maximum of the power?
You could test it, by applying a variable resistor to it, while changing the resistance from near 0Ω to lets say 100KΩ, while measuring the voltage across it and then mapping the power by calculating
P=U*I=U*U/R=U^2/R
But this would take a while and wouldnt be so accurate, since the power would drop while you are measuring it.
So now lets assume that the inner resistance of the batterie is constant (to be able to apply ohms law) To calculate the max power.
So at first we will have to know the inner resistance. Since we know that the max voltage is 5V (at almoust zero load like multimeter at voltage measurement)
And since we know that the max current at 0.1Ω resistance is 10mA
we can calculate the inner resistance.
So I=(U )/(R ges)=U/(Rm+Ri)
So Ri=U/I -Rm=5V/10mA -0.1Ω=
≈500Ω
So now the power is:
P=Um*I=Rm*I*I=
Rm*(Uges/(Rm+Ri))^2=
=Rm*(5V/(Rm+500Ω)^2
You can now plot it and look the max up, or take the derivation in respect to Rm and calculate the value by setting it equal to zero.
If i take the choice of the graphic calculator it tells me that the maximum is at 500 Ω and 0.0125W so 12.5mW.
So to check the answer you can calculate:
I=U/Rges=5V/(500Ω+500Ω)=5mA
and U=Rm*I=500Ω*5mA=2.5V
So P=2.5V*5mA=12.5mW.
If you now calculate with higher or lower values of Rm you will get lower values of P.
So for example with 501Ω you will get:0.01249999W
and with 499Ω you will get the same value (probably not exactly but with this amount of accuraty)
And thats the fun of physics where you have only a few variables and you can calculate a lot with it
But would be funny if you testet it with the method i explained with a variable resistor. Just go from 1000Ω down to 100Ω and look if there is a peak at 500Ω. I would be very thankfull if you did this. Because then we all can learn from it.
Very interesting. I will have to try this at some point down the road. Thanks for taking the time to explain all this. I agree it's amazing what someone can find with a few measurements. Cheers!!!
I hate to be the bearer of bad news, but this isn't an aluminum air battery, it's an aluminum copper battery (where the reactant is copper from the cathode). If you google 'aluminum copper soda battery' they demonstrate the same thing, but using coca-cola as the electrolyte, and no graphite. NurdRage, a professional chemist, made the same mistake in a video 10 years ago (though he used steel wool for the cathode instead of copper). If you try this with an inert conductor like carbon fiber instead of copper mesh you won't see much, if any current. Alternatively, you'll see that if you use an electrolyte with some dissolved copper sulfate (or other copper salt) you'll be able to get a lot more sustained power out of it.
A limiting factor on any aluminum battery is that you need an electrolyte which can dissolve some aluminum, but not so much that it runs away and corrodes through the aluminum. For other metal-air batteries they go for slightly basic conditions (pH 12~13), though if you still want a working copper-aluminum battery you'd need to use ammonia as the base since it forms soluble copper complexes. If you want to make a true aluminum-air battery, you'd want to use some very dilute sodium hydroxide (~0.1% by mass) along with the saturated sodium chloride in the electrolyte.
that is much better thanks
Excellent for learning how or works but I think it takes longer to build this than the battery will last.
Short circuit current of only 10 mA is not great, any other battery would crank amps and get hot! I shorted a used polaroid battery from an instant film pack and it pushed 30 amps!
Haha good observation. Yes it is on the weak side. You can only really get so far with aluminum foil and saltwater. I was more just trying to showcase the concept of a metal-air battery. Maybe in the future I can make some improvements to the power output. Cheers!
The issue is the resistance and the lack of Oxygen able to be adsorbed by the graphite/paint mixture. Use a much thinner binder and include Activated Carbon for the Oxygen. You can ditch the copper current collector as well.
@Vino Veritas Thanks for the advice. That is very helpful. I will give it a try.
@@MechanicGoneRogue TY. It's relatively for a crude battery to generate a voltage, producing a usable current is the key. lol
The batteries in the newer Impossible Polaroid film packs are actually single-use lithium-ion batteries...I found this out when I cut one open and hacked a loogie onto it and it got hot, then poured Coke Zero into it and instant fire grenade...and it phrygian DOESN'T GO OUT...just like early celluloid motion picture film, it will continue to BURN UNDERWATER as it has it's own oxidizer...almost set the house on fire...luckily I was able to keep the surrounding area of the carpet cool, but the room was full of thick grey smoke with dark burn marks on the carpet...good thing I got the room vented out before my parents got home from grocery shopping or the smoke alarm went off...If you short the battery on the newer ones, make sure you don't have any valuable or irreplaceable items (including mixtapes) in the immediate area...
Nicely done!
Why thank you!
I believe it is aluminium fuel cell. And Air cell is different. Air cell is an sub category in fuel cell.
5v @ ± 2.5 mA, I wonder if it would charge a cell phone in a pinch, and if so... how long it would take and how many times. COOL project!
Glad you like it. A number of people of mentioned charging a cell phone. That never really crossed my mind, but I might have to try it out.
Very Nice!
Thank you! Cheers!
Bravo majstore.
DUCT TAPE YEAH
OH YEAH!!!
@@MechanicGoneRogue YAAAAAAAAAA
Loved it, keep up the good work!
Will do!!! thank you very much. I'm glad you liked it.
@@MechanicGoneRogue .
awesome!!!
Thank you! Cheers!
Yes Bro...
God Bless.....
Thanks. I'm glad you liked my video :)
Proof of concept for an aluminum air cell of 0.004A X 5.0V = 0.02Watt
Amazing
Thank you! Cheers!
I used those flashlights for motion sensitive under cabinet lighting (on my channel).
400mA lights them brightly, so it looks like, under load, that is lower, maybe 200mA?
Keep it up, thanks :)
Thanks friend 👍
Who said the voltaic pile was dead. They make a carban spray that works really well. Its actually a lubricant but it drys
Do you know which brand of carbon spray? I tried one before, but it didn't work. The manufacturer had mixed something into it to increase the resistance of the spray. Which defeated the purpose for me.
Correction. Its a graphite spray. Not carbon. Its sold as a dry lubricant. The brand is called ZEP. I'm not sure if it's still sold. Its an old can. I found them at work. Also check out the dual carbon battery. Its rechargeable. Robbert Murray smith has an ok video on it
OK well I certianly didn't try that brand. I'll have to look for it. Having a spray on cathode would be helpful.
Cool
Hello, I loved your video, and it is a very efficient project to work on, but if you could, would you please send a labeled diagram of the battery?
Would it work if u used simple pencil to colour the paper instead of carbon paint?
I tried using pencil lead previously but got fairly poor results. I suspect it's because of the binder used to hold the graphite together. I'm not sure if that's for all pencils or just the brand I was using, but I haven't tried pencil lead since then.
how long did the light stay on? 5 volts and 3mah correct?
Add some sodium hydroxide to boost the output
"...and of course this would not be a proper project without duct tape..."
😂 😂 😂 👍
The hallmark of all good projects lol.
incredible.. good video
Thank you! Cheers!
you deserve a subscription.....
Thanks alot mate!!! I appreciate your support.
Pretty impressive!
Thanks!
very nicely made, have you also recharged these babies? it should be possible. i like how you made them
Well I'm really happy you enjoyed it. I haven't tried recharging them yet. Hoping to do that in the future sometime. Cheers!
Please test with cement, copper for positive electrode and aluminum for negative electrode. Thank you for your reply.
That's a very curious combination. What is the cement supposed to do?
roll it up stick it in a smarty tube and you have a rechargeable ::P
Well I did try to fit the cell into a pen body, but it kept on shorting out. Maybe a smarty tube will fit better.
Great video 👍
Glad you enjoyed it! :)
Video is very foster
Very nice demo.
Does the battery consume all of the metallic AL? If not you may want to mix some household bleach into the electrolytes, its pretty darn good at accelerating oxidation in AL but getting the ratio right so you don't burn up the battery too fast might be a trick.
Also. I could only just hear you over the music at times, demos like this need to be mixed voice forward
I'm glad you like it. No there is usually some extra aluminum sticking around. It may just be because the water evaporates before it can be consumed. Good idea on the bleach. I'll have to give it a shot in future experiments. Also thanks for mentioning the music. Definitely going to be turning it down next time. Cheers!!!
@@MechanicGoneRogue This (slow reaction) is also the reason why your short circuit current is too low. Aluminium oxide film acts as an insulator greatly increasing the battery's internal resistance. Bleach or Sodium Hydroxide added to the electrolyte would dissolve the oxide film and will do wonders for the battery's power delivery. Oh, and lose that music.
Wow this is a great video, some noise in video and background made it little bit hard.
Zinc washers and copper coins with wet kitchen roll in salt water, just stack them up and away you go..
Are they rechargeable?
This is a terrific DIY. Sorry for the harsh prev comment, but the sound quality is awful, and your content deserves better. One minor suggestion - a rubber band or binder clip instead of the final duct tape to hold it all together so it can be disassembled should the need arise.
Hey there @Ned Goldreyer Thanks a lot for taking the time to share your thoughts in both your comments. Happy to know that at least my content is decent. Since this video has been made I've been working on sound quality for future videos. Would love to hear your thoughts on them as well if you have time. A removable binder is a really good idea too. I should have thought of that. Cheers!
Question: How can you say it's an aluminum air battery and proceed to add a liquid electrolyte?
Yea but air will potentially "deplete" your battery because it will dry the electrolyte. Still, nice made and btw have you measured the overall cap?
2 the moon!!🌮🌮🌮🍓🍓🥂🥂🥂
Can you build a copper wire and magnet ac electrical generater?
How does air enter into the battery? All of catodes are stacked by other electrodes.
That's a really good question. The answer is not well at all. Some does get in through minor cracks or imperfections between the cells, but its a minimal amount. It's a design flaw that I worked to address in later models.
Good video but the music should just barely be audible if you have to have it. It’s easy to spoil an otherwise well thought out video.
@ sandyt Really glad you enjoyed my video, and thank you very much for mentioning the music. It's certainly a learning process for me. Cheers!
good job!
Why thank you. I'm glad you liked it!!!