How to tell the difference between a v1 and v2 ATB

[audiopistol]

I'm looking for someone to help me be able to tell the difference between a version 1 and version 2 ATB. So far I've noticed differences in the way it is shaped. V1 is more "blocky" looking. Not as much curvature as the v2. Also, I noticed on some ATB's that the battery case will not slide on/off while the atomizer is screwed in the mod. I'm assuming this is the v1. And the ones where the battery case comes on/off while the atomizer is in would be the v2? Is that correct?

Any help with telling the difference would be solid. Thanks guys.

 

[audiopistol]

I forgot to mention the button as well. The v1 has the smaller, SS button, while the v2 has the larger, brass button. Any other differences or did I just about cover all of it?