I know it's the esc. Checked my lipos cells with a voltage checker and they were fine. The bec in he hobbywing should be fine due to the mmp that worked fine having a way lower bec voltage. Now i'm out $50 for a reciever, $60 for an esc, $35 for a body ,and $70 for a buku clutch on my truggy. Not having any money for these items: priceless......