I just got this nice little cut off switch. The problem I had, is not having a nice and asthetic way to power my scooter. I had some dean connectors coming out of a hole and connected those wire together. No really nice seeing wire coming out. A member of the VamUdeS told me where I could find this neat little device: http://www.rctoys.com/rc-toys-and-parts/MPI-ARMING-SWITCH/RC-PARTS-CONNECTORS-WIRING.html They use that cut off to remove power to the main motor on there plane. A very safe way to know that you motor will go turn on, when you are checking under the hood. I use this device because I could not find a normal switch that could handle 40Amp and + of power without melting.
The “real” name is Battery Arming Switch ( Safely Arm and Disarm your RC ) Product number is MAXX 6970. This will be the main “switch” to power the entire scooter. The concept is very simple, you have a little loop of wire on the end of a connector. When you plug it in the other end, it close the electric path and current can now flow to the controller and motor.
The only draw back of this cut off it the wire gauge is only 14AWG. It will work but one day I will probably need to go with 10AWG to make sure the wire will not get hot, meaning lossing precious energy in heat.