A hearing aid is an electronic medical device, designed especially to help people suffering from hearing disorders. Basically, a hearing aid is used to intensify the sound for a person challenged with hearing. It not only reestablishes your hearing but also develop it significantly.
There are different types including Behind The Ear (BTE), In The Ear (ITE), In The Canal (ITC), and more. The functioning of all these hearing aids is based on Hearing Aid Batteries.