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[Allwest]

Microbial fuel cell

Microbial fuel cell

Interesting read

Microbial fuel cell - Wikipedia, the free encyclopedia

Best of luck

[Allwest]

@All
I have been working on small single cells and have been successful making a Lead/Alum AA size rechargeable. It is a shrunken down version of a 3 plate cell that JB made weeks ago only it is semi dry. This cell design allowed me to use it in AA type devices and chargers. There are some problems with it but overall ---it worked. Keeping it with the right moisture content is the biggest problem. Too wet and it will ruin any device you put it in. Too dry and it loses all power and will not recharge until remoistened. I really like the fact though, that I now have a cell that will recharge in wall outlet charger and in 10 min. be able to do real work.

Homemade rechargeable AA battery - YouTube

Homemade Rechargeable AA powering an LED flashlight - YouTube

I am doing cell testing with a number of devices but the one that has my attention now is a pulse drive motor unit out of AA battery powered waving "Lucky Cat". The way that device works is that it pulses out a signal to the electromagent coil until the magnet in front gets moving. Once the magnet starts moving past the coil the BEMF (yes the BEMF not flyback) sends energy back through the circuit and alters the pulse rate. For some reason this seems to help the homemade cell like what you are seeing Fausto. A drive unit out of a solar waving flower that you get in the dollar store should work the same. My led Penny oscillator is also being used for testing and I have seen some interesting effects with that also. The cell seems to recover between the pulses if you keep the amp draw extremely low. Water has to be there or my test cells go dormant. They can maintain a surface dry charge but have no power.

Lidmotor

Hi Lid,

Great job, just a little refining

I had a thought that may or may not work with keeping in moist

If you could make a moist clay, salt, alum paste, and then heat shrink some plastic on it

Just an idea for you

Best of luck

[Lidmotor]

Single cell testing

@All
I have been working on small single cells and have been successful making a Lead/Alum AA size rechargeable. It is a shrunken down version of a 3 plate cell that JB made weeks ago only it is semi dry. This cell design allowed me to use it in AA type devices and chargers. There are some problems with it but overall ---it worked. Keeping it with the right moisture content is the biggest problem. Too wet and it will ruin any device you put it in. Too dry and it loses all power and will not recharge until remoistened. I really like the fact though, that I now have a cell that will recharge in wall outlet charger and in 10 min. be able to do real work.

Homemade rechargeable AA battery - YouTube

Homemade Rechargeable AA powering an LED flashlight - YouTube

I am doing cell testing with a number of devices but the one that has my attention now is a pulse drive motor unit out of AA battery powered waving "Lucky Cat". The way that device works is that it pulses out a signal to the electromagent coil until the magnet in front gets moving. Once the magnet starts moving past the coil the BEMF (yes the BEMF not flyback) sends energy back through the circuit and alters the pulse rate. For some reason this seems to help the homemade cell like what you are seeing Fausto. A drive unit out of a solar waving flower that you get in the dollar store should work the same. My led Penny oscillator is also being used for testing and I have seen some interesting effects with that also. The cell seems to recover between the pulses if you keep the amp draw extremely low. Water has to be there or my test cells go dormant. They can maintain a surface dry charge but have no power.

Lidmotor

[DadHav]

Crystals on plates

Hello everyone. I don't know if this is of any interest but I heard someone mention they couldn't see into they're battery to see what it was doing. I have two pictures. The first one is the clear case 7 ah battery with alum electrolyte and it is completely discharged. The second one is the same battery and negative plate completely charged. You can see the crystals on the plate at the charged state as apposed to the smooth depleted discharged plates. I'm not sure this is an optimal situation but it is something interesting never the less.
Cheers.
John Hav.
Edit addition
I've noticed something else about the crystal formation in the battery. The clear case shows the crystals being absorbed into the electrolyte during discharge and forming back on the plates during charging. OK, I'm not always around during a long charge cycle, so I've missed something. As the battery charges there is a point where the crystals are at maximum but then start to decrease again at about the point where the battery starts releasing gases. So I'm thinking you can over charge and loose the effectiveness of the crystals. That is of course if the crystals are part of the effectiveness of the battery. If I remember right JB mentioned the charging process at the start of bubbling was complete.
Any thoughts?
John Hav.

[DadHav]

Lead Plates

I would like to share some of my findings in my experiments.

Video part1: Crystal Cell 35 - YouTube
part 2: Crystal Cell 36 - YouTube

This test the cell does not have ANY input of power present.

Fausto.

It looks like you're having fun Fausto. Do you have your oscillator circuit posted anywhere, or is this from one of John's diagrams?
I made a mold the other day and it looks like it works pretty good. I made two plates to try out and I'm running the official Rusty LidMotor Penny Oscillator with it. I have have some red led ordered and will try to get a little further with a cell later on.
Take care.
John Hav.

[plengo]

I would like to share some of my findings in my experiments.

Video part1: Crystal Cell 35 - YouTube
part 2: Crystal Cell 36 - YouTube

This test the cell does not have ANY input of power present.

Fausto.

[plengo]

Today during testing I found out something really interesting about these Lead/Alum cell.

I am running many long run tests where the cell receives very little input power and a long discharge into a load over time. I am convinced the cell with the Oscillator is generating its own power BUT one must show that with data and a simple test.

So, I decided to test the cell when it is shorted and put back into the load. Never receiving a charge. I did that based on the my findings of the cell extremely high resistance when charging and lower resistance when discharging.

When shorting the cell, to my surprise, she increases her voltage substantially to maintain the current flow to the load. This causes her internal resistance to increase and when switching to discharge mode and her resistance drops but while the resistance drops (or that transient time) she actually charges herself.

So my new test is very simple, during a certain pre-determined time, I connect the cell to the Oscillator, later I switch from the Oscillator to a short or very low resistance load. I repeat the process to "infinitum" (until my meter's batteries die usually). All controlled using Arduino and relays.

The voltage and current given over time is increasing not decreasing. I will make a video of it as soon as I have a nice long graph to prove that.

Fausto.

[Allwest]

They run at 1.2 volts at 2 Ma to run the led he needs two cells unless you use the oscillator.

Hi John,

Thanks for the facts

Do you know of anybody else who has beat this?


Thanks, and best of luck to you and chuck

[Freezer]

Did another rundown of another zinc lead cell, using the same mixture. 100,000 samples/27.7 hours. Led is dim, drawing a little less than 1mA, but doesn't seem to want to extinguish. Not sure why the dip occurred at the 1.2v mark, as I didn't touch anything, but it seemed to come back, maybe it was my circuit or a ghost..

http://imageshack.us/a/img705/9471/zlc3.jpg

[mikrovolt]

I have some materials on order,
I am very excited about John and Chucks discovery,
I picture 2013 conference as a victory celebration.

The latest events are milestones
leading to the realization of a new power source.

The sodium in the soda ash must be the element that is common
in most biological organisms.

You all have been so encouraging.
thankyou for posting !

[Freezer]

What a beautiful graph. Great work.

Fausto.

Thanks plengo. Just checked the voltage again, and it's still at .399. It's been at that voltage for about 5 hours.

[plengo]

Ran a graph over night. The battery on the meter was getting low, but it is reading correct, and the led is dim, but still on. Also wanted to note that the electrolyte in the cell is around 3 degrees lower than ambient temperature.
http://imageshack.us/a/img717/2608/zlc2.jpg

What a beautiful graph. Great work.

Fausto.

[Freezer]

Ran a graph over night. The battery on the meter was getting low, but it is reading correct, and the led is dim, but still on. Also wanted to note that the electrolyte in the cell is around 3 degrees lower than ambient temperature.

http://imageshack.us/a/img717/2608/zlc2.jpg

[plengo]

I suspect that you are right about the need for better oscillators. Maybe ones that really feed back some of the output, to maintain it's source up and going.
Your youtube video link said PRIVATE. I couldn't open it.

ops. Thanks for the tip, I was about to go to sleep. Video is public now.

Fausto.

[Nick_Z]

I suspect that you are right about the need for better oscillators. Maybe ones that really feed back some of the output, to maintain it's source up and going.
Your youtube video link said PRIVATE. I couldn't open it.