hello everyone 
i have problem on my servo motors i have 3 6.5kg servo motors and my battery is 2x 6v 1800mAh is that enough to power my servo in long time..? or should i add some component to my circuit to last long my battery..?
Well, since you have the servos, just test the servos with the batterys with the servos to see if they meet your needs. Much better than relying on best guesses from others.