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You left out time. Both 120 and 240 have similar losses in the moment, but level 1 charging has those losses for at least twice as long.
For example, the leaf level 1 charger sends at 1.4kw to the car, but only about 1.2kw makes it to the battery. That's pretty significant.
Slow level 2 charging is 240v at 12 amps, it sends about 2.9kw to the car and about 2.7 to 2.8kw makes it to the battery. Because it's more efficient to step up 240v AC to 400Vdc as opposed to 120vac to 400vdc and now you are losing those roughly 200watts for less than half the time. Also level 1 charging is 1.2kw and level 2 is more like 2.8kw in this case.
Level 1 charging just sucks, for lots of reasons, just don't do it.
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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.
Last edited by oil pan 4; 05-12-2022 at 01:14 PM..
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