Possible Duplicate: Why we have 3 pins on some batteries? I'm trying to build (DIY) open charger for mobile battery. I would like to know what is the usage the middle one? Is there ...
I'm currently ask to work on a project which I have never worked before. And I have no freaking idea or its not even in my area of expertice. Ususally I Google as everyone does. But what is the use ...