Quote:
Originally Posted by ketrab
Can someone explain to me how do you calculate 6-7 hr required based on the 3.7kWh max input?
Quote:
Originally Posted by X5 45e
There is some energy loss ... Charging 17 kWh should be 5-6 hours ? Like you calculated
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Though I'm purely guessing, US vehicles will still have to charge the full 24kWh, it's just that the software limits the usage to 17 - I could be totally wrong ... I'm wondering if the battery is somehow programmed to use 24kWh with 17 kWh of capacity ... not exactly sure what the kernel of thought I have is, but here's a nonsensical attempt:
i.e., the "battery" is actually a bunch of cells bundled into modules that are bundled into the battery. The battery management software spreads the charge / use / decharge cycles across the various cells to extend the life and effectiveness of the overall battery. Thus in EU cars the software spreads those full-usage cycles serially across all cells equally, but in US cars the software limits the full use down to 17kWh which allows the software to spread the cycles longer on each cell thus increasing the life of the battery overall. In other words, in US vehicles the battery is somewhat burning in parallel instead of in series which provides less burden/load to the overall battery (i.e., the individual cells) resulting in an easier delivered 17kWh since it has 24kwh to play with ....
That said, it's important to mention at this point that I have no idea what I'm talking about.