it is possible of course, but it is terrible. you are going to use a %65 efficient alternator on an idling engine (what %10 efficient idling) for a conversion efficiency of maybe %6.5, lets knock off another %20 for the 12-144v conversion, so %5 efficient?
so assuming 100 amp alternator, and that you meant 10kwH, it would take 10.5 hours to recharge fully. And it isn't "free", assuming 115,000 btu per gallon, it will take 6 gallons to recharge. and it might save you a gallon in the first hour of driving, and will also hurt your mileage if charging while driving.
just dump 5 gallons on the ground and save yourself the trouble.
edit, actually it is worse, I'm not taking charging/discharging and motor/controller losses into account, but you get the idea.
so assuming 100 amp alternator, and that you meant 10kwH, it would take 10.5 hours to recharge fully. And it isn't "free", assuming 115,000 btu per gallon, it will take 6 gallons to recharge. and it might save you a gallon in the first hour of driving, and will also hurt your mileage if charging while driving.
just dump 5 gallons on the ground and save yourself the trouble.
edit, actually it is worse, I'm not taking charging/discharging and motor/controller losses into account, but you get the idea.
