I have an IPV4 and I bought it for battery life (dual efest 2800 mah) and I really like the feel. I use a Subtank Plus and kanthal coiled rdas in wattage mode with the TC turned off. Can this damage the mod? I haven't had any problems with using it this way. I get a full day of sub ohm-ing or dripping and it's everything I wanted in a mod with features that I may use in the future. I just don't want to find out later "you really should have used the temp control, that's why you ruined your mod". Please advise.