day where there are just a few kinds of batteries – the a, aa, d and c. now you have so many batteries it is hard to know which kind that you need sometimes unless you have the battery you need to replace right in front of you. you need that battery finder because batteries can be quite expensive and you do not want to purchase an expensive battery to then realize that it was the wrong battery. then you will not have the battery you need, your item will not work and you are out money! just use the battery finder for better results.
when it comes to your computer 