Energy Science Fair Projects About Batter Use

Battery Use

Battery life is often tied to how it is used. However, is it more efficient to keep a battery on all the time or is it better to turn it on and off?

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Ages 10 thru College	Ages 12 thru High School	Age 8 and up

Objectives/Goals

The objective of this project was to see if a battery would last longer being turned off and on or staying on continuously.

Methods/Materials

I used six flashlights, three on continuously and three being turned on and off hourly. Once each flashlight turned off and the batteries had run out, I recorded the time it lasted. When all the flashlights were recorded I rotated them, since I was doing more than one trial. All the batteries were Rayovac.

Results

The information that I compiled shows that in trial one the on/off flashlights had lasted a total average of fifteen hours and thirty-three minutes. The continuous flashlights in trial one averaged a total of twenty-six hours and eight minutes. On the second trial the on/off flashlights averaged a total of twenty-three hours and the continuous flashlights averaged a total of ten hours and twenty-six minutes. In the third trial the on/off flashlights lasted an average of twelve hours and thirty-three minutes, while the continuous flashlights lasted on average twenty-two hours.

Conclusions/Discussion

In conclusion leaving a flashlight on continuously saves more energy and you get better life out of your batteries. My observations lead me to conclude that my hypothesis was wrong. 3rd party contributor

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