hi i hope someone can help, i went to run my car today but i put the bullet pins in the battery the wrong way

i quikly pulled it out and put it right, tried it and it went, turned it off sorted my lads car out went back to mine and the esc wont turn on, i plugged it in to the pc to alter the settings but still nothing, if you hold the power button the orange light stays on and the red light flashes powering up the servo but then red goes off and flashes

not happy