The Effect of the Number of Times the Battery is Charged on How Long the Charge Lasts
School Name
Heathwood Hall
Grade Level
10th Grade
Presentation Topic
Consumer Science
Presentation Type
Non-Mentored
Written Paper Award
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.
Recommended Citation
Hall, Allison, "The Effect of the Number of Times the Battery is Charged on How Long the Charge Lasts" (2017). South Carolina Junior Academy of Science. 79.
https://scholarexchange.furman.edu/scjas/2017/all/79
Location
Wall 210
Start Date
3-25-2017 11:15 AM
Presentation Format
Oral and Written
Group Project
Yes
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.
