eGo Batteries IconEgo batteries represent a separate category of vaping products and they are often referred to as Vape Pens, especially in a combination with a clearomizer on top. These batteries got the name ‘eGo’ from the type of connector they have, which is bigger and threaded on the exterior as opposed to the traditional 510 connector that we’re all familiar with. They come with only one button that’s used for both vaping and turning the device on or off.