Thanks for the insight. I don't think that its excessive heat as well since its only at 150 after a 7 min main. I am using a Maxamps 5000mah battery that I believe is rated at 20c (it only says HV on it) or an Orion 3200mah battery. I believe its happened with both batteries, but I'm not positive. I will monitor it more next time I'm out and gain more data on the problem.