Rechargeable Solar Power Bank

Abstract

The study entitled ‘Rechargeable Solar Power Bank’ was conducted at Tagaytay City Science National High School from June 2017 to February 2018. This study aimed to make a portable power bank that can be charged using both solar energy and electrical energy. In this study, the researchers used an experimental research design, a collection of research designs, which use manipulation and controlled testing to understand casual processes. Generally, one or more variables are manipulated to determine their effect on a dependent variable. The type of experimental research the researchers had chosen is single group design wherein an experiment where the researchers manipulate one variable, and control/randomises the rest of the variables. In making the product, the researchers used a solar panel, converter, rechargeable AAA batteries, old foundation case, electrical wires and some scrap materials from an old lamp. The researchers first made the power bank and then attached the solar panel. Several students from Grade VII-SPJ tested the product,and91% of them were satisfied. Some of the comments and recommendations were: conduct more studies about converting solar energy to electricity; improve the structure of the power bank; and make the product applicable for all types of gadgets. The researchers can conclude that: the power bank is very helpful to everyone especially for students; the product can be charged using solar energy and electricity; and it can only charge android phones. They also discovered that the product could also be charged using a light source such as a flashlight, fluorescent light, etc.