can anyone give me the materials used on how to make a battery..?
117736
Materials needed:\n     1 lemon\n     1 paper clip\n     1 copper wire (18 guage works well)\n\nProcedure:\n     1.   Straighten out the wire of the paper clip.\n\n     2.   Cut a piece of copper wire roughly the same length\n          as the paper clip.  Remove the insulation.\n\n     3.   Push the paper clip and the copper wire into the \n  lemon.  Keep the wires as close together as you\n          can, but don't let them touch.\n\n     4.   The fruit battery is now ready for use.  If you\n          have a voltmeter you can test how many volts\n          the battery produces.  You can also taste the\n          two wires and feel a tingle in your tongue.\n          (Note: you should only do this for very low\n          voltages such as those given off by lemons.)\n\nHow it works:\nAcids, such as the citric acid in lemons, tend to produce chemical substances called ions. These ions either have too many electrons (negative) or not enough (positive) Metals tend to attact these ions. \n\nOne type of metal will attract the negative ions and the other will attract the positive ions. This causes the two metals to have different electrical charges and electricity will flow from one to the other whenever you attach the battery to something like a radio (or your tongue). \n\nIncidently, the flow of electricity will eventually neutralize the ions. When this happens the battery is dead. \nand also see:
809942
Here is an idea.\nCompare power supplies by weight, volume and power density using various batteries.\n\nThere are many batteries on the market now, so it might be very educational for you and anyone looking at your project.\n\nConsider using the following batteries:\nLead acid battery\nLithium-ion battery\nLithium ion polymer battery\nNickel-cadmium battery\nNickel metal hydride battery\nMolten salt battery\nSilver-oxide battery\nWater-activated batteries used in radiosondes\n\nYou could compare different AA batteries of different types and costs.\n\nA good starting point for references on batteries is on Wikipedia:\nhttp://en.wikipedia.org/wiki/Batteries\n\nYou might even be able to get a small prototype fuel cell if you ask to work with a battery manufacturer, a research company, or someone like NASA.\n\nYou should start thinking of what kind of a hypothesis you could write to kick of the experiment.  Hint: Don't worry if your experiment fails and you fail to prove your hypothesis. Sometimes the best experiments are failures!\n\nHope this helps!
372137
try this :\n\nhttp://www.makezine.com/blog/archive/2005/06/
454521
Do a google search.  Most of the manufacturers have FAQs on the subject (and pictures).
130352
as stated by Kobe, the chemicals inside the battery cause a "difference in potency" at the end caps of the battery. One cap has a surge of positively charged static, and the other, negatively charged static. This causes that whatever is put close to the battery caps, and is a "good conductor" (not like wood, more like metal), will be driven to let direct current flow through it. This process will last for as long the chemicals inside the battery wouldn't mix all together. The "workload" driving negative surge on one side and positive surge on the other causes chemicals to mix all together. When this comes to happen the battery will stop working.
351195
It is a polymer made up of two different monomeres. If it is used in batteries it will likely allow ion conduction, i.e. the migration of ions through the polymer. No idea whether an additional solvent is required, though.
1146414
http://science.howstuffworks.com/electricity.htm
808544
Man did u luck out running into me, go to www.sciplus.com "American science and surplus", all sorts of abandon science projects, factory over runs, cancelled government orders, motors, solar cells, weird stuff in the science dept, it's a mad doctors dream come true, CHEAP TOO ! check it out, you'll find lots of "COOL" stuff, that has many uses ! I did a hydro-electric demonstration of power application, that was so small, I could do it in a lab sink, E-mail me if you want an "A", it's an easy experiment, inexpensive, looks very sophisticated, yet simply displays the hydro-electric properties of producing low cost, hydro-electric power, using no battery's or electric for assistance, just water, so it's completely SAFE ! works on displaying milli-amps of D.C. power, yet you are still producing (at a very low voltage) power.
175787
you must use some one plug to fill your battery. but make sure your battery can bear the  power of plug.\n\nhahahahahahahahahahaha
453062
http://en.wikipedia.org/wiki/Lithium_ion_battery
55953
Make a battery from a lemon!\n\nhttp://www.energyquest.ca.gov/projects/lemon.html
176528
http://www.chem1.com/CQ/ionbunk.html\n\nskim this article.
353988
I heard of a way of producing an electric courant by heating on side of a PN jonction made of two different type of metal. \nI also saw a alcool lamp with a collier all around that was producing enough electricity for a radio, that was realy long time ago ( may be 60 years ), that collier was made with near an hundred piece of two metal in alternance, and each jonction was a thermal diode.
350261
"Repairing" your battery really depends on what kind of damage/use it has been subjected to. However, there are some ways to revive the battery life.\n\n1) Clean the contacts with a dry swab.\n2) Run several complete charge and complete discharge cycles.\nif this doesn't work...\n3) Place the battery in a freezer in a plastic bag for 12 hours. Remove it, wipe off any condensation, and let it thaw for 12-24 hrs before running more charge/discharge cycles.\n\nIf these don't work, it may be time for a new battery :-)
779355
make a mixture of half baking soda and half water. then apply it to where the acid is. This is great for when you have to clean the prongs on the battery. Be careful not to touch the acid.
303320
Try   http://www.insitu.de/materialdatabase/materialdatabase_2_4e.html
133057
"A better battery? A better mousetrap." \n\n"Every laptop and cell phone owner I know wants more battery time.  If it works as advertised, we'll soon see laptops with 10 hour batteries."\n\n"Saphion technology is superior because Saphion technology possesses safety and excellent cost/performance characteristics that cathode materials currently used in Lithium-ion batteries do not."