I wanted to get a switch on the setup because it was a hassle to unplug the light every day. I also wanted to only charge cells once a week. so this setup uses two packs I need 4.1 hours runtime) and a on off switch. it is a very simple setup that lets me use a single pack or more then one. I did not use a waterproof switch since I doubt the switch will get any water on it since it is under and behind the plastic.
I also wanted to make the light somewhat theft proof so I send the hose clamp to make it harder to remove.