If you are really not attached to the battery you can have some fun with it. I had a motorcycle battery that was low on charge but I had sold the bike a few months ago. I decided to see what would happen if I charged it at high amps. It was clear sided and I set it to 6 amps charge and watched...
Because of the high freq components of a lightning strike the path to ground should contain as little inductance as possible, meaning as straight a line as possible.
On the other hand in my case I also have to try to protect a TV transmitter. To this end the sheild of the coax cable is bonded...
Encyclopedia of Physics 2nd Edition copyright 1991
Article by Martin A. Uman (University of Florida)
" A fully developed stepped leader has about 5 coulombs of negative charge on it, it has travelled to ground in about 20ms with an average velocity of 1.5 X 106 m/s and an average current of...