The first purpose of this experiment was to determine which brand of AA battery lasted the longest.
My second purpose was to determine whether rechargeable batteries would last longer than disposable batteries.
I became interested in this idea when I went on a field trip that focused a lot on electricity. I thought it was very interesting so I took this time to study more about batteries and electricity.
The information gained from this experiment could help consumers everywhere
so they know which brand of batteries is best to buy.
My first hypothesis was that Duracell would produce electrical output the longest.
My second hypothesis was that the disposable batteries would last longer than the rechargeable batteries.
I based my first hypothesis on the fact that alkaline batteries provide charge longer than nickel cadmium batteries and nickel-metal hydride batteries are like nickel cadmium batteries, and Rayovac and Eveready are nickel-metal hydride batteries. Alkaline cells last longer than carbon-zinc cells and Energizer has carbon in it so that leads me to believe that Duracell will lasts longer than Energizer and any other battery being tested.
I based my second hypothesis from http://www. sciencenet. org. “How Rechargeable Batteries Work. ” It said, “Normal cells are actually distorted and largely destroyed in the process of making electricity. ” That led me to believe that disposable batteries would lasts longer than the rechargeable batteries.
The constants in this study were:
The first manipulated variable was the brand of AA battery. The second manipulated variable was whether the battery was rechargeable or disposable.
The responding variable was the time the battery provided current.
To measure the responding variable I timed how long the battery provided current to the electronic clock.
Creating the Battery Tester:
1. Solder one of the 60 cm wires to the wire already attached to the
positive end of the battery holder.
13. Set the clock at 12:00 exactly.
The first purpose of this experiment was to determine which brand of AA batteries would produce electrical output the longest.
The second purpose of this experiment was to determine if disposable batteries lasts longer than rechargeable.
The results of the experiment were that Eveready produced electrical output the longest at an average of about 193 minutes. Rayovac then lasted the second longest with an average of 146 minutes. Duracell lasted the third longest at an average of 101 minutes, and Energizer finished last with an average of 91 minutes.
My first hypothesis was that Duracell would produce electrical output the longest. The results indicate that my first hypothesis should be rejected because Duracell discharged the third longest, while Eveready discharged the longest.
My second hypothesis was that disposable batteries would lasts longer than rechargeable batteries would. The results indicate that my second hypothesis should also be rejected. I thought disposable batteries would discharge longer than rechargeable batteries, but the rechargeable batteries lasted longer.
Because of the results of this experiment, I wonder if the temperature would affect the battery’s output. I also wonder if the voltage of the light bulbs (load) would affect the burn time of the battery.
My findings should be useful to consumers around the world because now they know which brand of AA battery would last the longest.
If I were to conduct this project again I would do more trials and repeat my experiment again to see if my results were similar. The last things I’d do are using more battery brands of each type of battery and use higher voltage light bulbs.
I would like to thank the following people for helping make my project possible:
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