The iPod Battery Life

I am studying the subject of ipod battery life I want to know how to conserve energy and increase battery life. The problem that I am investigating is that draining a lithium ion battery all the way down and recharging it is better for it than draining it to any other point and then recharging it. My hypothesis is that the ipod that is drained all the way will have a better battery life than the other one. To do this excitement, two ipods and a stopwatch are required. I have found out that draining a lithium ion battery all the way down and recharging it is better for it than draining it to any other point and then recharging it. What I have learned can be applied to anything with a lithium Ion battery. People could learn that draining a lithium ion battery all the way down is good for it.

Background Info

I am studying the subject of ipod battery life because I want to know how to conserve energy and increase ipod battery life. Many people complain how ipods run out of battery too quickly; I want to fix that problem. To better understand this, It's important to know what kind of battery the ipod uses, and what influences battery life, (temperature, time, type of usage, model etc.)

After some research was done, I found out many important things that would help my experiment. I found out that ipod batteries are replaceable. Different kinds of batteries would probably affect the experiments results. I also found out that you can charge the ipod with solar power along with plugging it into a computer. I think that solar energy might change how the ipod drains the battery. There are a few different times the batteries last depending on the ipod model. Apple says you should get 20 hrs on a normal ipod, but people have trouble getting 10. The average ipod only gets about 8-12 hours fully charged. If you use an ipod 400 times, there will be only 80% battery life left! That's with draining it all the way; I would want to prove that if you charge it up without draining it fully, that the percent left would be about 70%. An ipod uses a battery called a lithium ion battery. Different batteries may drain slower or faster, so the same has to be used in each ipod.

Question and Hypothesis

My question is you drain an Ipod all the way and recharge it, it Is better for the battery than using it halfway and recharging it.

My hypothesis is if you drain an Ipod all the way and recharge it, it Is better for the battery than using it halfway and recharging it.

Materials and Methods

Materials

• iPod x 2
• Timer/stopwatch

Methods

How I preformed the experiment was I first drained two ipods and recorded the time it took to drain them. Then I drained one to half way and recharged it three times and drained one all the way and recharged it three times. Once again, I drained them and recorded the time it took to drain. It should come out that the one I drained all the way will have lost less battery life.

Results

The experiment proves that draining an ipod all the way is better for it than draining it halfway and recharging it.

Ipod A is the ipod that I drained half-way and ipod b is the one I drained all the way. Time 1 is the first time recorded and time 2 is the second time recorded

Conclusion

All the variables were controlled in the experiment, but there was one that is impossible to control, that is what date the ipod was made

One challenge that came up during my project was when I recorded the ipods draining time, they would die and I would not get the exact time they died at.

If I could repeat this experiment, I would get two brand new ipods and use them. That would make the experiment be more even.

The reason I think that the second times came up longer than the first ones were because before this experiment, the ipods weren't

Acknowledgments

I would like to thank my mom for letting me use her ipod for this experiment, and my dad for giving me the idea for the experiment in the first place.