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And remember that alternator spinning at say 9,000RPM at partial load may only be 40% efficient.
Vehicle alternator efficiency peaks at about 70% but that is only at 2,000 to 3,000 alternator RPMs (not vehicle RPMs) and at around half load, this is not the speed the alternator turns at while the vehicle is driving down the highway.
At highway drivng speed and partial load I would expect the alternator to be between 50% to 35% efficient.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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