Title

The Effect of the Number of Times the Battery is Charged on How Long the Charge Lasts

Heathwood Hall

Consumer Science

Non-Mentored

3rd Place

Abstract

The purpose of this experiment was to find out if the number of times a rechargeable battery is charged decreases the length of time the battery will hold its charge. It was hypothesized that if a rechargeable battery is charged multiple times the length of the time the charge will last will decrease. Eight rechargeable batteries were charged, for one hour and thirty minutes then tested to find the initial voltage. After finding the voltage the batteries were placed into one of four hair trimmers, to run down the charge. A camcorder was used to film the exact time the hair trimmers turned off. A timer was also started as a backup. After the batteries had fully run down, when the trimmers had fully shut off, the voltage was tested again, this was repeated five times with both sets of four batteries. The data showed that the length of charge decreases as the number of re-charges increase. Thus the data was conclusive, leading to a conclusion that rechargeable batteries lose charge as they recharge.

Wall 210

Start Date

3-25-2017 11:15 AM

Oral and Written

Group Project

Yes

COinS

Mar 25th, 11:15 AM

The Effect of the Number of Times the Battery is Charged on How Long the Charge Lasts

Wall 210

The purpose of this experiment was to find out if the number of times a rechargeable battery is charged decreases the length of time the battery will hold its charge. It was hypothesized that if a rechargeable battery is charged multiple times the length of the time the charge will last will decrease. Eight rechargeable batteries were charged, for one hour and thirty minutes then tested to find the initial voltage. After finding the voltage the batteries were placed into one of four hair trimmers, to run down the charge. A camcorder was used to film the exact time the hair trimmers turned off. A timer was also started as a backup. After the batteries had fully run down, when the trimmers had fully shut off, the voltage was tested again, this was repeated five times with both sets of four batteries. The data showed that the length of charge decreases as the number of re-charges increase. Thus the data was conclusive, leading to a conclusion that rechargeable batteries lose charge as they recharge.