Automated motor vehicle battery voltage protection is provided by setting voltage trip points for increasing engine speed and for shedding selected electrical loads. The system is effected by programming a vehicle body computer which communicates with, and exerts control over, various vehicle system...http://www.google.co.uk/patents/US7421323?utm_source=gb-gplus-sharePatent US7421323 - Automated vehicle battery protection with programmable load shedding and engine speed control