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Author Topic: Working Air Battery  (Read 221320 times)

markdansie

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Re: Working Air Battery
« Reply #15 on: June 15, 2010, 11:14:03 PM »
Hi,
This is a great thread. Great video's
It will be interesing to see how long they last.

Here is a link to a commecial battery using similar principles. Unfortunately they can only be used a few times.

http://crave.cnet.co.uk/accessories/0,39101000,49292553,00.htm

They were released in Japan in 2007

Kind Regards
Mark


markdansie

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Re: Working Air Battery
« Reply #16 on: June 15, 2010, 11:20:06 PM »
Just a video on the NoPoPo battery

http://www.youtube.com/watch?v=gh77QP_IQPM

Mark

markdansie

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Re: Working Air Battery
« Reply #17 on: June 16, 2010, 12:07:58 AM »
@lasersaber
Thanks for your video, it was great.
I have one question.
You copper wire, how far did you drill down into the rod? would there be any advantage in drilling further down and say use a rod to increase the surface area? Just thinking aloud.
I posted a couple of links on the Nopopo battery. Unfortunately they cost a fortune ($15 each) and only last once filled four ties. I am really interested in your battery the key will be how long it will last. I gather the magnesium is the only thing that will corode and it should be easy enough to wind another ribbon on to recondition the battery with time.
Many thanks and great work
Mark

PeteIdl4

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Re: Working Air Battery
« Reply #18 on: June 16, 2010, 07:19:43 AM »
Hello Everyone,
I've been following everyone's work for a while, especially the work on the JT circuit and these Air Batteries by Lasersaber. Well i figured it's time i began to contribute some myself. I rewound some Air Batteries today using Lasersaber's newest video and got pretty good results, but still no significant current from just the moisture in the air. (I live in Southern CA by the way so there's not much moisture in the air in the summer.  ;D) By adding a few drops of water i was able to light just about any LED or small set of LEDs to full brightness. That's a lot better considering that before i literally had to soak the Air Batteries to get this amount of current. So now i have redone the Batteries only this time i decided to add a bit of baking soda to the mixture instead of just salt, and it got me a good jump in current. I was able to light some LEDs off humidity this time around, and by wiring two together and adding about a ML of water to each I was able to light a fluorescent using a Jeanna's Light JT circuit. So I thought that was pretty neat and i will leave you guys with a picture to go with this, and keep up the good work everyone.

-Pete

billmehess

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Re: Working Air Battery
« Reply #19 on: June 16, 2010, 06:39:51 PM »
Hello Everyone,
I've been following everyone's work for a while, especially the work on the JT circuit and these Air Batteries by Lasersaber. Well i figured it's time i began to contribute some myself. I rewound some Air Batteries today using Lasersaber's newest video and got pretty good results, but still no significant current from just the moisture in the air. (I live in Southern CA by the way so there's not much moisture in the air in the summer.  ;D) By adding a few drops of water i was able to light just about any LED or small set of A to full brightness. That's a lot better considering that before i literally had to soak the Air Batteries to get this amount of current. So now i have redone the Batteries only this time i decided to add a bit of baking soda to the mixture instead of just salt, and it got me a good jump in current. I was able to light some LEDs off humidity this time around, and by wiring two together and adding about a ML of water to each I was able to light a fluorescent using a Jeanna's Light JT circuit. So I thought that was pretty neat and i will leave you guys with a picture to go with this, and keep up the good work everyone.

-Pete
How long will this run continously?

jeanna

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Re: Working Air Battery
« Reply #20 on: June 16, 2010, 07:37:53 PM »

So now i have redone the Batteries only this time i decided to add a bit of baking soda to the mixture instead of just salt, and it got me a good jump in current. I was able to light some LEDs off humidity this time around, and by wiring two together and adding about a ML of water to each I was able to light a fluorescent using a Jeanna's Light JT circuit. So I thought that was pretty neat and i will leave you guys with a picture to go with this, and keep up the good work everyone.

-Pete

Nice work, Pete!

I have one like that and I was also struggling to make it do much.
So far 2 leds in series but not fully bright is the best I have done.
I can get them fully bright, but then they are only on half the time about 15 seconds on then 15 seconds off, so that won't do.
I guess it is time to add some magnesium sulphate to the cotton to see if that ups the amps as well as salt or baking soda.

thank you!
=====
@billmehess,
The studies are still incomplete, but, with a plant battery, it seems that you will use up around 1.2gr -1.6 gr of magnesium in 8 days with constantly wet soil.
There is a lot more to test, but when it takes a week at a time, the tests go on for a while. But that should give you a place to start.

[1.2gr is around 20 inches and 1.6 is around 30 inches of magnesium ribbon.
And the batteries offered about 1.5mA to 3mA to the circuit.]

thank you,

jeanna

lasersaber

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Re: Working Air Battery
« Reply #21 on: June 16, 2010, 08:49:07 PM »
Jeanna,

Is there something in your soil that is acidic?  I cannot imagine what would A your ribbon go so fast.  I have run test batteries at much higher mA currents for weeks on end and not noticed this kind of rapid break down.  Maybe there are fertilizers in you plants soil?  I will have to get a digital scale so that I can do some tests over time.  Maybe the breakdown is so uniform that I just can't detect it by sight.  I am doing a long term test now with the batteries used in my last YouTube video.  I have had them running the flashlight non stop since I made the video.  I have not had to wet them down since I made them and the light is still very bright.

markdansie

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Re: Working Air Battery
« Reply #22 on: June 16, 2010, 09:00:01 PM »
@lasersaber
is it the magnesium ribbon that breaks down or do you get a chemical buildup between the graphite and the ribbon?
With your first ones you built how are they holding up?
I have ordered the components now and hope to add to this conversation with some results soon. It takes a while to get parts to me in Australia
Kind Regards
Mark

lasersaber

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Re: Working Air Battery
« Reply #23 on: June 16, 2010, 09:35:17 PM »
Quote
is it the magnesium ribbon that breaks down or do you get a chemical buildup between the graphite and the ribbon?

I think I have experienced the chemical build up you speak of on a different design.  Back when I first tried making these I used a copper pipe instead of a carbon rod.  They always worked great right at first but dropped in power rapidly in a very short time.  The power dropped but the mag ribbon seemed to be in fine condition.  It was because of these early experiments that I switched to a carbon core.  Since using the carbon core I have never had this problem.  I have not had any issues with the new design yet.  My original air batteries are still working fine.

jeanna

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Re: Working Air Battery
« Reply #24 on: June 16, 2010, 09:51:05 PM »
Jeanna,

Is there something in your soil that is acidic?  I cannot imagine what would A your ribbon go so fast.  I have run test batteries at much higher mA currents for weeks on end and not noticed this kind of rapid break down.  Maybe there are fertilizers in you plants soil?  I will have to get a digital scale so that I can do some tests over time.
That is a good plan to get a scale. It helps to have the weight.

Um,
I added dolomite limestone to all but one of mine, so they should not be acidic.
I use something that the mushroom growers use, so there is a lot of organic material in the soil.
I thought it was good.
I mean 1.6gr is a 30 inch piece and it lasted for close to 200 hours running solidly on?

Quote
Maybe the breakdown is so uniform that I just can't detect it by sight.

Yes, in fact most of the time mine are failing in only one spot. If they went uniformly they should last longer and better.
I tried the tape to see if it would hold the mag ribbon together, but it is keeping it too dry, as there is very little output.

Quote
   I am doing a long term test now with the batteries used in my last YouTube video.  I have had them running the flashlight non stop since I made the video.  I have not had to wet them down since I made them and the light is still very bright.

This is good to know.
I appreciate knowing how long these are lasting.

Also,
Please tell us if the outside ones are still going?
Or, how long they lasted?

thank you,

jeanna

screaminvern

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Re: Working Air Battery
« Reply #25 on: June 16, 2010, 09:56:37 PM »
  Back when I first tried making these I used a copper pipe instead of a carbon rod.  They always worked great right at first but dropped in power rapidly in a very short time.  The power dropped but the mag ribbon seemed to be in fine condition.

  What do you think the difference is between the copper and carbon concerning the power drop?

lasersaber

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Re: Working Air Battery
« Reply #26 on: June 16, 2010, 10:33:19 PM »
Quote
Also, Please tell us if the outside ones are still going? Or, how long they lasted?

This is what I think is pretty amazing.  I ran the outside mag ribbon most of last winter under load.  It was still working fine this spring but coming apart at all the splices.  I dug up all the underground ribbon and it's the very same ribbon I have been using in all my air battery experiments up until the last two large carbon rod models on my latest YouTube video.  I thought I might as well order some new ribbon since they were working so well.

Quote
What do you think the difference is between the copper and carbon concerning the power drop?

I would have to do a little research to answer that.  I never had this issue when the electrodes were far apart in the ground.  I know from experience that it has something to do with the two dissimilar metals being in close proximity to each other.  NS coils also seem to suffer from this problem a little bit.  I have not noticed it at all in this new air battery design.

jeanna

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Re: Working Air Battery
« Reply #27 on: June 16, 2010, 10:46:30 PM »
This is what I think is pretty amazing.  I ran the outside mag ribbon most of last winter under load.  It was still working fine this spring but coming apart at all the splices.  I dug up all the underground ribbon and it's the very same ribbon I have been using in all my air battery experiments up until the last two large carbon rod models on my latest YouTube video.

Seriously?
How did you get it to give power and not deteriorate?
Did you put anything on it?

I agree it is truly amazing.

thank you for sharing this,

jeanna

markdansie

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Re: Working Air Battery
« Reply #28 on: June 16, 2010, 11:46:34 PM »
I think I have experienced the chemical build up you speak of on a different design.  Back when I first tried making these I used a copper pipe instead of a carbon rod.  They always worked great right at first but dropped in power rapidly in a very short time.  The power dropped but the mag ribbon seemed to be in fine condition.  It was because of these early experiments that I switched to a carbon core.  Since using the carbon core I have never had this problem.  I have not had any issues with the new design yet.  My original air batteries are still working fine.
Thank you so much for this info. I am really excited about this and eargerly await my part to start building.
Mark

Mk1

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Re: Working Air Battery
« Reply #29 on: June 17, 2010, 12:03:58 AM »
@all

Not all soil and water is equal , some have alkaline battery some have acid battery , It would probably be a good thing to test the PH levels ...

This could give us a hint , the cathode reaction should be different , and we could determine witch is better for its lifespan .

Mark

« Last Edit: June 17, 2010, 12:25:02 AM by Mk1 »