The flashlight has made large strides in progress from a simple bright long lasting LED lights, to solar rechargeable flashlights. Traditional flashlights used alkaline batteries, their lights were not meant to be used for long periods of time, and the lights were very dim. New technology improved upon the function and design of traditional flashlights, but these flashlights still needed their environmentally damaging alkaline batteries to be replaced frequently. In addition to battery replacement, traditional flashlights are often broken easily, and the quality of their light is still not very good. Thus the ever important need for a cost effective solution was born.
To solve the many problems of the traditional flashlights, many different types of rechargeable flashlights were developed.More: continued here