Christina D.

A Batteries LifeThe Scientific Method

Christina D.

Brands

Duracell Energizer Rayovac Sunbeam

Christina D.

Variables The Control Variable- How much time it

will take for each flashlight to burn out. The Independent Variable- Four different

types of AAA Alkaline batteries. The Dependent Variable-The amount of

time it takes for each light to burn out.

Materials Three of each type of battery Four flashlights (same brand) Index Cards Sharpies

Christina D.

Hypothesis

There are many different types of batteries, the batteries in this experiment are Dry Celled batteries. They convert chemical energy into electrical energy. The batteries cell is composed of a zinc anode (-), and a graphite cathode (+). The electrons travel from anode to cathode creating energy, when the electrons die out so will the energy. As a result the flashlight will burn out.

I use batteries all day everyday, from phone batteries, cordless curling iron’s, and my numerous flashlights. I couldn’t image a life with out batteries and I'm sure my fuzzy friend The Energizer Bunny is going to last the longest.

Christina D.

Name Duracell Energizer Rayovac Sunbeam

Manufacturer Procter & Gamble

Energizer Holdings Inc.

Rayovac Sunbeam- Oster

Suggested Use Flashlights, Remotes, Smoke Detectors

Hearing Ads, Smoke Detectors, Handheld tools, Flash lights

Hearing Aides, Flash lights

Clocks, Remote Controls

Rechargeable No No No No

Purchase Place Walmart Walmart Walmart The Dollar Tree

Purchase Price 8 count-$6.37

8 count-$6.37

8 count-$4.97

8 count-$1.00

Christina D.

PROCEDURE

I USED THESE STEPS TO INVESTIGATE THE LIFE OF BATTERIES.

Opened and tested each 200 Lumen, High Intensity Flashlights.

Inserted three of each brand of AAA Alkaline batteries into lights.

Placed flash lights on appropriately labeled index card.

Turned each flash light on low setting. Documented time. Checked lights in thirty minute intervals. Recorded when lights bunt out.

ResultsBrand Duracel

lEnergizer

Rayovac Sunbeam

Turned on

9:30 pm 9:30 pm 9:30 pm 9:30 pm

Burnt Out

2:30 am 1:30 am 1:30 am 12:00 am

Christina D.

In Conclusion

My hypothesis was that Energizer would last longer, based on personal choice. I was wrong “The Copper Top”, Duracell was the winner. Although it was a pretty close race, I would advise people to spend the extra few bucks, and at least get Rayovac batteries for important items such as hearing aids and smoke detectors.