Impact activated electronic battery kill switch

An electronic battery kill switch system for a vehicle having a vehicle electrical system and having a battery with plates and terminal posts, the kill switch system comprising:

• a silicon controlled rectifier having a gate;
• a metal oxide semiconductor field effect transistor electrically connected between a battery plate and a battery terminal post, the metal oxide semiconductor field effect transistor being electrically or electronically connected to the silicon controlled rectifier and having a gate;
• signal means supplying an emergency signal to said gate of the silicon controlled rectifier, wherein, in response to said emergency signal, said silicon controlled rectifier is adapted to turn off said gate of said metal oxide semiconductor field effect transistor so that the battery plate to terminal post electrical connection is interrupted, wherein the battery is disconnected from said vehicle electrical system.