No worries. I can usually answer questions, but can't really answer the business questions. I was just a user constantly posting in this forum until last week when I was asked to do it on more of an official level. So my goal is to continue to help out like I already was but more often, while still giving my opinions as a user. As for the battery, make sure you keep the bad one, because they would have you mail it back to them.
That you'll need to confirm with Tony.
I ordered some and love them. Yes you can see when they are running low. The only prob. i find with the xls are the fear of burning one. So the cleros are the answer, although the xls are great. One tip with cleros is to get some good quality scotch tape and tape them from day one. Carefully tape them at the bottom along the metal edge about half way up. This will eliminate leaks and make them much stronger and see thru. They vape awesome!!!! Another plug for the fine folks at MV!!