Hi there...me again. I purchased an OMG mod awhile ago and haven't used it. I went back to vaping recently and used this mod. It was working fine, but all of a sudden is not. Silly question, but when you are charging the battery, if the green light is on, is it charging or is it done charging? Confused here. Not sure if I killed it or it just needs to charge LOL. Can anyone help me out?