“Useful life” is a nebulous quantity. I’ve known people w EVs and the batteries needed replacement before the owners had achieved what they anticipated as “useful life” of the vehicle. I’ve owned 30 yr old ICE vehicles and they still functioned when disposed. No way a battery is going to last that long even if it was only taken out for a Sunday drives around the block.
The point was that your efficiency calculation was a great example of selecting numbers to fit the conclusion rather than a comprehensive analysis.
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