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The higher the voltage the less heat loss and resistance and losses in the wire (for the same energy transferred). Thats how they come up with home electrical wire ratings for the most part. Electric current carrying capacity in the heat of the local environment vs the point at which the wire will get too hot and i assume they more or less care about fires over efficiency. So they got their ratings and then added a safety factor to make them idiot proof, at least we all hope. Some idiots are too good! I do my best at that some times.
So if you could compare
120v charging at 25A vs 240v charging at 12.5A you should lose less energy from the transfer with the 240.
Ideal would be like charging at 1000v but 3A as it would have very small losses. For the most part it just leads to less heat production in the entire electrical system that will be charging the car so more of it goes in the battery.
So if yall can use 240 and charge as slowly as you need to (ie: 8 hour parking every night could be better spent charging for 8 hours instead of 3)
this is why automotive engineers hate 12v systems but we are stuck with them over going to higher voltages because of pita factor.
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"I feel like the bad decisions come into play when you trade too much of your time for money paying for things you can't really afford."
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