What slim cig batt has a higher voltage then a fatter batt like the vgo or ego? My Vgo is 900 maH, 3.3-4.2 v and w/ 510 threading, can I put an Ego-t reg atty on it? or should I use a Ego-t LR atty? (Still don't understand the purpose of LR atty's, just more TH?). All I want to do is try the tank tip on it, and I have read I need a Ego-t atty to use the "tank" tips you can fill. Thanks for all your expertice, i'ts really helpful!