George Harmony

Here is someone who use not so thick magnesium graphite rods. He achieve with each cell 1.5volt but ah is low.

If the same setup but with carbon water filter as decribed above perhaps ah is much more higher.

@jingjoe wrote:

but what kind of anode would be needed for a salt water primary battery..

I was thinking of such a setup:

Pvc water filter housing with inside carbon active filter. Then you already have your membrane. Perhaps drill very small holes in thr housing enabling oxygen come in. Put spiral copper coil in the carbon filter till the bottom. And you have your anode

Wrapped the cathode with aluminium sheet (cathode) and put the whole in the water filter pvc housing. You have your cell, 1.2volt and ah is perhaps higher than the commercial versions 40-50ah.

Soon i will try it. Keep you again updated then

Ps: Instead of magnesium pict 4 we use carbon

According to the dutchman his led can burn 20 hours with his setup. If stronger Led(s) can burn 6-7 hours its for me ok. He gave also some of his conaiderations to work with supercapacitors.

I just want to try it. If its true what he claims, how about a setup like pict 2

Ofcourse ive read your comments and i just want to try.

Another thing. Have you ever see a "pendule clock" invented by a dutchman? Its swinhg continiously. Is it not possible to generate electricity?? Perhaps better than other gravity generators.

Here is another example of solar lighting with super capacitors. This Dutchman made a complete report of one of his outdoor lighting.

Ordered also some supercapacitors with more farads than this example.

Intention is to charge two with very small panel, connect some diodes and you dont have to worry about overcharging

Lets see how long my usb lamp(s) can burn....keep you updated after i received it.

And just for fun i ordered also a hp hand charger ...

I know @muhendis. Someone borrowed my multimeter and did not bring it back ???? .... (will i ever get it back ?? )

Tomorrow i must buy another one.

Here is another example of pencil aluminium air battery with joule thief. Mine with act carbon is bigger. I think the bigger the more amps and with thick copper cable perhaps more current.

https://m.youtube.com/watch?v=rzATzDAvHdM

1st is the waterfilter from which i took out a litte bit of act carbon for my experiments. Really a little bit cause it looks like its stil full.

3rd pict i put more carbon in and made a spiral with thick copper cable till the bottom. So its surrounded by the carbon. Can you imagine that you do the same inside the whole carbon filter

2nd pict i solder a joule thief and it works

Yeah @crossy, ive seen that already.

I have this "silly idea" to use carbon water filter(s) as cells and refresh/clean/backwash it automaticly during the day. These carbon filters are here not so expensive and is much more bigger comparing to the commercial anodes. Ofcourse you must do some diy but i think i can achieve reasonable amps and the lifetime is hopefully long if i wash it daily during the day cause i dont load during te day :)

What do you think of this idea @crossy?

I think why (salt) water wett cell batteries are not popular is because the expensive replacement of the anode. Thats why i try to figure out the cheapest way to make diy anodes.

Here is the housing of a commercial version of such a battery with 40ah 12v. The trick for me is to try to make the anodes myself so i can run some of my 5 and 7wats usb lamps at 4-5 volt. Think i need to design 3 cells only and if the bigger anode results in higher amp.....lets try to make it

Here are some examples of home made battery with measurements of volts and amps.

http://sci-toys.com/scitoys/scitoys/echem/batteries/batteries.html

Volts? Amps?

Is that one cell driving a white LED directly without a joule-thief?

Electrodes? Electrolyte?

Its driving that tiny dc motor you see on the pict. Ive ordered the components for making joule thief. Hope to receive it today. Just doing some experiments myself for learning. I later ofcourse try to make some lamps myself with serial and/or paralell connected saltwater cells.

What i just did is half burned pencil touching a copper wire and as cathode alumium foil. Works also. So you dont have to take out all the graphite from the pencil

Will keep you updated.

Just an update of my saltwater experiment.

It works really great for few days. This morning the same battery i "back wash it" just under a crane, not yet 1 minute. Then i soak it in saltwater again and its still working.

I made one also with graphit. Burn the pencil, took the graphit out and it works alao great

Added:

If someone is interested to experiment this also and is lazy to do some diy just use carbon brush (for electric motor) :)

12 volt led lamps:

https://www.ledlight.com/12-volt-led-spot-flood-lights.aspx

Here is handy charge and discharge online capacitor's calculator:

http://mustcalculate.com/electronics/capacitorchargeanddischarge.php

Another way of emmergency lighting for remote village:

Charge by hand some supercapacitors and you can have few hours or whole night lighting

As i understood well supercapacitors last very very long time ccomparing with normal batterie and:

The energy in a capacitor is:

E = C * V2 / 2

When C is in Farads, V in Volts, then E is in Joules.

150F * (2.7V)2 / 2 = 547 J

The switching power supply will need some minimum voltage to work with. Let's say it can operate down to 1 V. That represents some energy left in the cap the circuit can't extract:

150F * (1.0V)2 / 2 = 75 J

The total available to the switching power suppy is therefore 547 J - 75 J = 470 J. Due to the low voltages, the losses in the switching power supply will be quite high. Let's say that in the end only 1/2 the available energy gets delivered to the LED. That leaves us with 236 J to light the LED.

Now we need to see how much power the LED needs. Let's go back to your original white LED and pick some numbers. Let's say it needs 3.5 V at 20 mA to shine nicely. That's 3.5V * 20 mA = 70 mW. (236 J)/(70 mW) = 3370 seconds, or 56 minutes. At the end of that, the light would go dead rather quickly, but you will have fairly steady brightness up until then.

Five or six in series and with efficient joule thief ... :)

Here is an example of someone who uses simple youle thief + simple aluminium air battery.

@jingjoe,

I bought that little toy saltwater car and included is a small piece of carbon active, shape is like a nail of you middle finger which you put in the car.

For diy who can buy cabron chuckles cheap this is a way to make effective carbon anodes. Just use mesh or what they here put in windows agains moskitos.

Bind the carbon, heat it up a little bit and press it or press with a little bit heat. The shape its up to you. Put membrane of for example polypropylane or kitchen tissue and you have your battery.

According to some people if you put on top of the carbon a copper plate you can get more current.

Very effective way to make an aluminium air batteries and if you have all the tools you can make these in a couple of minutes.

Put it in a compact plastic box and poor in saltwater

If you dont use it, take it out and clean it. Ready to use for the next load

Here is another commercial version of a wetcell 40ah 12v battery.

The Enviro-Gen® generates its own electricity once the seawater is added and a load is placed on the unit. That's right, if there's nothing plugged in and operating, there is no voltage produced and no depletion, so this isn't a 'one-time shot'. You can use the Enviro-Gen for several hours, then dump out the water and rinse the anodes in fresh water and put it back on the shelf. Oh, the Enviro-Gen also has an indefinite shelf life and, unlike batteries, is unaffected by hot weather or engine room conditions.

129,95 usd

I think a handy diy-er can make the anodes himself cause the anodes have to be replaced after using all ah. An experienced diy-er is perhaps able to make such a battery himself.

http://dragonet.com/fhp/

In the good old days leo was 45 bht in Harmony with life music in Udon.

Ive heard that there is no harmony anymore in udon. ???

Now called London Calling .

Closed about three mounths ago thanks , UT .

Demolition, expected soon .

My remark that there is no harmony anymore not only refers to a bar rstaurant harmony but also to udon in general where before expats went to their favorite "beer holes" like one big family and everybody knows each other. The harmony of the good old days are gone. ????

About diy salt water battery. Ive yesterday and this morning made some setups and works (very)good.

Soon i will try to immitate this setup and this guy claims such voltage and amp. Now about the costs.

Lets say i can make 6-7 amps 12volt. A vlra 7ah battery is then much more expensive and you need to charge it also with solar panel or otherwise. A setup with saltwater you can clean it and put again saltwater. When the carbon anode has been "eaten up" just replace it, costs = very very small.

So whats wisdom?? Salt water setup you can run it day and night. Combination of solar + saltwater power is perhaps ideal. For example for some lighting saltwater and heavier stuff solar.

@jingjoe,

How about such a setup which i got from somewhere on internet.

But thenj powered by carbon+saltwater?

This is all you need.

Next step i will try is to make my own carbon active plates and hope then to generate more amps.

@muhendis,

A lot of crab on internet and also lot of immitators. Im also a immitator cause i just made my own aluminium carbon battery and im running now a very small dc motor already for 2-3 hours. I still had a reserve carbon active water filter. Aluminium foil i always have in my kitchen.

How about if i make small tubes in a plastic box where users can put in c.q. refill with:

Tissue,

carbon active,

aluminium foil and

saltwater and then

a lamp is burning.

I think this is an effective way to help a village house and if i can generate enough voltage and amps ofcourse also for my own use

We all know that a peltier can generate electricity. There is heat and cold side.

This guy's claims an invention of crystal graphite battery with constant voltage of about 1.5v and when there is a little bit heat, from your hand for example,the voltage rises.

Many others experiment with crystal batteries which seems to give voltage for years without charging.

Perhaps soon a crystal battery will be available with bigger capacity, who knows???

Hope you not get bored of my updates. After jne brought that saltwater toy the chinese micro hydrogenerator came with another express service. I will enjoy my weekend with learning and practising