How to Make Battery from Potato

Introduction:

Batteries generate electricity through a chemical reaction between two different electrodes and one electrolyte. Use of Copper and Zinc electrodes and Sulfuric acid as electrolyte is a proven method for this process. We are wondering if we can use any other liquid as electrolyte? This gave us the idea of using a potato as electrolyte. After all a fresh potato has a lot of juice that may serve our purpose as electrolyte.

Problem:

Can Potato be used to generate electricity?

Hypothesis:

Potato juice contains many water soluble chemicals that may cause a chemical reaction with one or both of our electrodes. So we may get some electricity from that.

Material:

For this experiment we use:

A fresh potato
Copper Electrode
Zinc Electrode
A Digital or Analog Multimeter to measure Voltage or Current of produced electricity.
Alligator clips/ Leads

Procedure:

We insert copper and zinc electrodes in to the potato, close but not touching each other. We use Clip leads to connect our electrodes to the Multimeter to measure voltage between two electrodes or current passing through the multimeter. For this experiment we removed the shell of a broken AA battery for our Zinc electrode. (Make sure to test your multimeter by connecting it's Positive and Negative wires to each other that should show no current and no voltage).

Record And Analyze Data:

A digital multimeter showed 1.2 volts between the electrodes, but the analog multimeter showed a much smaller value. In other words even though the voltage between electrodes is 1.2 Volts, the speed of production of electricity is not high enough for an analog multimeter to show the exact voltage. (Analog multimeter gets it's power from our potato to show the voltage, but digital Multimeter gets it's power from an internal battery and does not consume any of the electricity produced by our potato, that is why it shows a larger and more accurate value).
We repeated this experiment with some other fruits and all resulted almost the same. In all cases the produced voltage is between 1 and 1.5 volts, and in all cases they do not produce enough current to turn on a small light.
Another thing that we learned from this experiment is that creating electricity and making a battery is easy, the main challenge is producing a battery that can continue to produce larger amount of electricity for larger amount of time.

http://www.miniscience.com/

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How to make a simple Battery

What you will need:

1. A 600ml plastic bottle
2. A piece of hose, stem or other form of tube
3. A Lighter
4. A cone piece or some foil or an aluminium can

Step One:
Lightly burn the 600ml about 1/3 of the way up, When it is beginning to melt, jam your hose, stem or tube into the melting area so that the other side of the hose goes straight to the bottom of the bottle

Step Two:
Then melt another smaller hole on the other side of the bottle about half way up. This will be your shotty.

Step Three:
Now simply insert your cone piece into the hose (melt the hose around the cone piece if necessary) and you're done and ready to smoke!Note that you can make a cone piece out of aluminium foil or an aluminium can by simply cutting it, modelling it on the end of a pen and once you have the cone shape you are after, insert it into your stem!

How To Make Your Zune Battery Last Longer

How you use the Zune player can affect the Zune battery lifespan. Under normal situations, a zune battery can up to 14 hours with the wireless setting turned off while playing mp3. If you are watching videos, it can last up to about 4 hours.

Here are some tips that can help maximize your zune battery lifespan.

1. Update Zune Firmware

Always update to the latest zune firmware as higher versions of zune firmware have better power management features.

2. Use either Play All or Shuffle All option

The less interaction there is between you and the Zune player, the laster the zune battery can last. One way of doing that is to either set it to play all or shuffle all option using the playlists.

3. Try To Play Only 128Kbps WMA files

The zune battery has the best performance when you are playing 128kbps windows media audio(WMA) files. If possible, convert other music formats such as mp3 to WMA format.

4. Backlight Settings

Using backlights can drastically reduce their zune battery life. If possible, try to reduce the backlight timing to either 1 or 5 seconds. Do not set to always on.

4. Brightness Settings

The brightness settings is another factor for causing the drain on the zune battery. If you can in an environment where it is bright for example in school or office, then you can set the brightness to low.

5. Wireless Settings

The wireless chipset on the zune player can consume a lot of battery resources when turned on. If you are not sharing files, it is best to turn it off. The amount of files you send or receive when sharing can also affect the zune battery.

6. Turn off the Zune player

When you are not using the zune player, press and hold the play/pause button to turn it off. Turning off puts the zune player in low power standby mode. If there is no activity within 24 hours, it will go in sleep mode and will take about 10 seconds to turn on.

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