I would only recommend the idea if you equip the vehicle with duel batteries. This is a standard set up many 4 wheelers use. High draw and most acessories draw from the second battery. Then rvrn if the battery gets too low the primary battery is used to start the vehicle which in turn recharges both.
_________________________
When in danger or in doubt
run in circles scream and shout
RAH

And always remember TANSTAAFL