do i need to fully discharge my 5000 mah batteries before charging again or is it not that big of a deal. if i do whats the easiest way to do it. also whats the best way to waterproof the batteries? i tried electrical tape on the ends and i tried my best to make a perfect seal but nothing worked. i heard of liquid electrical tape and am willing to try that, and also baloons and zip ties, but since the batteries are so close to the motors in the villain ex the ballons will probably melt. any suggestions for both of these?