5 Cell damp salt battery

Kitchen salt in old 35 mm photo film containers, make it damp with a little water and a home made battery is made, a lot easier and better than the lemon battery.
Less cells are needed and a steadier current is available to experiment with.

Materials needed:

Copper 2.5 mm² wire or flat strip
galvanised or plated woodscrews
old 35 mm film containers
kitchen salt
some wires with aligator clips
led of any colour

A duration test is being carried out now, to see how long the battery will last. Start 28 June 2009 at 2000 hrs.
The electrodes will eventually corrode and partially disolve in the damp salt solution, the current will decrease and the led will stop illuminating.

1 JULY 2009 Update. The led was ON for 36 hours and then basically OFF.
By moving the elctrodes the LED illuminated again for a couple of hours.
Problem here is corrosion too, at the electrodes.
By making them as flat strips a better current can be acquired because of a larger surface area exposed to the salt.
As an experiment it is still fun to try it for a school project.

Category:

Howto & Style

Tags:

• home
• made
• battery
• salt
• damp
• experiment
• photo
• container
• LED
• blue

[arnoldaszlt]

then it's gonna die you can recharge it??? plz answer

[RODALCO2007]

@arnoldaszlt You can not recharge this set up as the electrodes dissolve.

[thedragonfarm]

how does the sale have a charge?

[RODALCO2007]

@thedragonfarm The copper and zinc will have a shift in electrons.

salt is used as the conducting medium.

[davidthatis]

wow... you can easily power a mp3 player with that.

[RODALCO2007]

@davidthatis You could try, but the current is probably too low.

By making the copper and zinc electrodes as flat strips a larger surface area will assist in more current available.

[Redsun738]

wow...

[weyghrwyjdtjhjerhjwr]

woudent a penny made before 1984 mosty mad out of cooper and a penny made afterf 1984 mostly zinc after you scap off the casing make a better current?i just use old crismas lights for the actualy lights sanice there so plentilfull and no on wants them the light up fully at 2.5 but will still light up at .3 volt

[melisantika]

Nice Video That You Share , So Very Nice Thanks You make it damp with a little water and a home made battery is made, a lot easier and better than the lemon battery.

[Onepissite]

I Really Like The Video From Your 5 Cell damp salt battery

[pemburuiklan]

Your Video Is Very Useful Sharing make it damp with a little water and a home made battery is made, a lot easier and better than the lemon battery.

[MucusFelidae]

You say "led of any colour"

Well, I just wanted to ask, will it work also with LEDs

of other color, but you spoiled my question.

[jojotjuh]

Dit is een redoxreactie toch? Heel gaaf.