Quote:
Originally Posted by ConnClark
Does an alternator kill switch really improve your mpg? All the electricity you draw from your battery has to be put back with a 15% penalty when recharging the battery.
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Good point but sometimes, yes. Especially if you can charge the deep cycle battery off the grid at night and your commute is short enough to make it home without switching on the alternator. Alternately, (no pun intended) if your route is hilly you can switch it off climbing a hill and switch it on while engine braking on the descent. Modern fuel injected engines use no fuel while in overrun.