I have the ipv4 on pre order (can't wait) im stuck on the battery choice. I want to find the best choice for a vv/ww mod. With the most mahmp life and amp draw load. I was thinking about the LG HE4 . 2500MAH 35A High drain. I heard the efest purple has great battery life. But I enjoy lower builds. .15-.2 occasional .1 . I just want the safest battery with the most load and lifespan. Anyone with some info plz enlighten me. We gotta stay safe. Thxx