i have loads of batteries from my electric bike i may just wire them all up for 144v then put that through a switched mode power supply to get down to 15v. alternator switches off at 14.5v so i should be able to direct connect them without problems. diodes in the switched mode supply will stop alternator charging anything it shouldn't. i have every thing i need already. just need to find a battery +ve and -ve inside the driving compartment or push a wire through the fire wall.
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Nissan Leaf 24kwh. Average FE = 300mpg 3.6miles/kwh (@plug)
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