# Get the Most From Your Batteries

## Purpose Statment

The purpose of this experiment is to find the affect of heated air and cooled air on the life of a battery. I became interested in this experiemnt because storing energy tends to be hard. The information from this experiment will help others by showing them how the temperature of an enviroment can affect a pack of batteries.

## Research

First of all, yes batteries can expire. Every box has a little stamped date on it that says how long they can sit on a shelf and still be used. Usually it ranges from 3 to 6 years. But, the demand for batteries is always high, so they don’t sit on a shelf for that long.

A battery is made up of three parts; an anode, a cathode, and the electrolyte. The anode and the cathode are hooked up to an electric circuit. The chemical reaction between the two produce energy. Anode is a metal that has the highest melting point on the periodic table. The cathode is a metal that has a radioactive coating that gives it an extra electron kick.

## Hypothesis

My hypothesis is the cooler air will recharge it to a degree. I base my hypothesis on my father told me that it will recharge it somewhat. I want to prove it.

## Materials

9 Triple A batteries

Flashlight

Timer

Time

IV: Storage Temperature

DV: Battery Life

CV: Flashlight

CV: Battery brand and size

## Procedures

1. Insert three batteries into the flashlight.

2. Keep flashlight lit, and time how long the batteries light the flashlight.

3. Heat a second group of 3 batteries by putting them in water heated to 120º F for 5 minutes.

4. Repeat steps 1-2 for the heated batteries.

5. Cool a third group of 3 batteries by putting it in the freezer that is 20º F for 10 minutes.

6. Repeat steps 1-2 for the cooled batteries.

## Observations Log/Data

The regular batteries lasted 12 hours and 30 minutes. The cooled batteries lasted 19 hours and 55 minutes. Finally the heated pair lasted a total of 34 hours and 2 minutes.

## Results

The original purpose of this experiment was to find the effect of heated and cooled batteries on their life. My hypothesis was that the cooled batteries were going to last longer. But the heated batteries last much longer than the others.

## Results

The original purpose of this experiment was to find the effect of heated and cooled batteries on their life. My hypothesis was that the cooled batteries were going to last longer. But the heated batteries last much longer than the others.

## Conclusion

My hypothesis was the cooler air will recharge them to a degree. I base my hypothesis on what my father told me that it will recharge it somewhat. The results indicate that that this hypothesis should be considered wrong because I thought that the heated batteries would lose their energy. But, they lasted the longest out of all the battery tests. So, keep you batteries in a rather warm place.

## Acknowledgemens

Mark Rose, Robert Cook