Battery+Performance

Problem Scenario
Its important because batteries could work better in warmer tempature than in cold freezing tempature, or vice versa. **Broad Question** When under room or cold tempature do AA and AAA ba tteries work Better or Worse?

Specific Question
Does tempature affect battery performance?

Hypothesis
AA and AAA batteries will not be affected by the different changes in tempature making them work the same in warm and cold.

Vocabulary List That Needs Explanation
MULTIMETER: Multimeter or a multitester, also known as a VOM (Volt-Ohm meter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance. Multimeters may use analog or digital circuits. VOLT: A single volt is defined as the difference in electric potential across a wire when an electric current of one ampere dissipates one watt of power.[2] It is also equal to the potential difference between two parallel, infinite planes spaced 1 meter apart that create an electric field of 1 newton per coulomb. Additionally, it is the potential difference between two points that will impart one joule of energy per coulomb of charge that passes through it. LED: A light-emitting diode (LED) is a semiconductor light source.[4] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting.

General Plan
My plan is to see if batteries can work under different temperatures. This will probably take a couple of days to finish from testing the batteries in different temperature. I'm going to leave a pair of batteries in the cold, and a pair inside at regular temperature in a house. Then I am going to use a Multimeter to test the battery performance.

Potential Problems And Solutions
Problems that could happen during my experiment are that the tempature may rise when its at room tempature and cold tempature. Batteries may run out of energy when I am in the middle of m experiment. If that happens I will have to quickly change the batteries so that I can proceed with the experiment.

What is your experimental unit?
My experimental unit was 16 batteries and I am testing Battery performance by using a multimeter. **Number Of Trials:** This is how many times you will repeat the experiment. I will my experiment twice encase of error the first time. **Number Of Subjects In Each trial:** I will use 8 AA batteries in room then cold temperature then 8 AAA batteries in room then cold temperature.

Number of Observations:
How many measurements will you take for each experimental unit times the number or trials I will take 32 measurements because I have 16 batteries that are going to be in warm and cold temperature.

When data will be collected
I will start my experiment on 3/8/13.

Where will data be collected?:
The data will be collected in MR. Littlefields room.

Resources and Budget Table

 * Item || Number needed || Where I will get this || Cost ||
 * Batteries || 8 || Home || 0.00 ||
 * MultiMeter || 1 || Alex Klementovich || 0.00 ||
 * Freezer || 1 || Mrs. Campbell || 0.00 ||

Detailed Procedure
1.Collect the materials that I need such as batteries, AA and AAA. 2. I put all the batteries in room tempature so that I could have room tempature. 3.Then I asked Alex Klementovich if I could borrow his multimeter to calculate the volts in the batteries in room tempature. 4.Then when I finished I put the batteries in the freezer in MS. Cambells room for cold tempature. 5. Then I used the multimeter to calculate the battery power and how many volts are in it.

Results
I found out after a couple of weeks working on my science fair that their is no temprature affect on the batteries performance.

Conclusion
I found out that in the couple of days testing battery strength that battery's in a cold temperature about the same as the ones that were in warm weather, so logically saying the temperature made no affect on the battery. Every AA and AAA pair of battery's that I used about an average of 1.62 volts. I thought it was interesting battery strength worked and learning more about battery's.

**Discussion**

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All of my Batteries in room and freezing temperature all showed about the same performance. They all showed the same power and energy in performance and they all worked effectively.The relationship was really strong and showed that they belonged there.Yes I answered my question which was does temperature affect battery performance? This question showed that my hypothesis was right because the experiment showed that there would be no effect and that they would both work the same. My experiment showed no problems or errors and everything worked efficiently.This experiment could be improved on if I put more effort into it and if I had more time. I waited till the last couple of days to finish and that's something that I could improve on. =====

Benefit to Community and/or Science
This project benefits to the community because now people can put batteries in every weather and not have to worry about them not working.

Background Research
Some household batteries may last slightly longer if stored in the refrigerator or freezer. The type of battery and how it is stored will greatly affect whether refrigeration is an efficient means of extending its shelf life, however.. All types of batteries must be protected from moisture in the refrigerator, so they should be kept in a sealed container.

Abstract
Advertisers are always touting more powerful and longer lasting batteries, but which batteries really do last longer, and is battery life impacted by the speed of the current drain? This project looks at which AA and AAA battery maintains its voltage for the longest period of time. The batteries were tested with a multimeter by measuring the battery voltage.