1. Battery Testing

2. What nine volt batteries work the best? The reason I decided to test this experiment was because I’m tired of the fighting going on between battery companies and I just wanted to figure out which one was really the best to settle it once and for all.

3. Hypothesis I think that if I plug in three nine-volt batteries (Energizer, Duracell, RadioShack) to three mini lamps, then the Energizer will last the longest. The reason behind my hypothesis is that Energizer is a more developed battery company than most other places, and the fact that they created the nine-volt.

4. Interesting Facts A few things I noticed were: The Duracell battery just went out and didn’t fade. The RadioShack and Energizer faded and didn’t burn out. The time differences were huge.

5. Experiment Materials: A soldering iron Rosin-core solder 3 nine volt snap connectors ½ inch thick board 3 mini lamp bases 3 screw-base lamps Super glue One nine volt Energizer, Duracell, and RadioShack batteries Velcro Instructions: Solder the rosin-core solder to connect the nine-volt snap connectors to the solder tabs on the mini lamp base. Then, secure the three bases to the ½ inch thick board with super glue. Next, attach the batteries to the board with Velcro a good distance away from the connectors, don’t plug them in yet! Screw the lights into the bases and then as close to the same time as you can get, connect the batteries. Controls/variables battery power

6. Observations Each battery lasted a very different time then the others. Duracell is not a great of battery as the commercials make it sound. It didn’t take as long as I expected it would. And, nine-volts are expensive.

7. Data 1. I turned each battery on at four thirty-seven p.m. 2. The Duracell battery went out at five thirty-six and was on a total of one hour and one minute. 3.The RadioShack battery went out at five forty-six and was on a total of one hour and nine minutes. 4.The Energizer battery went out at six o’ eight and was on a total of one hour and thirty-one minutes.

8. Analysis of Data The Energizer was on the longest. The Duracell was on the shortest amount of time. The Radio Shack brand battery was on the most neutral amount of time. The Energizer is the best battery.

9. Conclusion All in all this was a very exciting experiment and I would definitely like to try again sometime and see if I get different results, but for now, all I can say is… 1 st place goes to… Energizer. 2 nd place goes to… RadioShack brand. 3 rd place goes to… Duracell.

10. References www.energizer.com www.duracell.com www.radioshack.com