So i got this traxxas rustler off craigslist and it has a castle system in it, the esc and motor. and im using the fs gt3b. For the first 2 days it ran and drove great. But now, if i plug in the battery there is no beeping but the red light is pulsing slowly, then flashes, then pulses again. sometimes when i plug in the battery the red light stays solid for 1 second then flashes rapidly then no more red light. I dont get what to do and it driving me crazy having a traxxas sitting around not getting bashed around. And my batterys on my fs gt3b say low power but i didn't think that that would mess with anything. can someone please help????!!?!?!