Anyone here using the new multi watt pro controller or the afterburner ring controller with a 7.4 volt lipo or ion? Reason I ask is the website says to use lower voltage, but I have talked to people who use them and it seems to be fine. I am running both controllers on one battery just wondering how they hold up to 7.4-8.4 volts which for a lipo 8.4 is what they show fully charged. Thanks