Etron charging levels

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As the 2019 etron 55 and similar charges faster at higher SOC (up to near 70% at 150kW or faster units, and up to 98% at 50kW), it would be slightly better to do long trips with a higher average charge level. I'm looking at a trip with charge from 20% to 50% with arrival at the next charging station at 20%. This leg would be slightly faster if the first charge went to 70%, and stopped at the taper point. On a long trip with only 50kW units, the shortest time would be charging to 98%… Which I'm not sure I would do for other reasons.

https://audiclubna.org/etron/wp-content/uploads/sites/38/2020/04/e-tron-Charging-capacity-vs.-charging-speed-3.jpg

https://audiclubna.org/etron/wp-content/uploads/sites/38/2020/04/e-tron-Charging-capacity-vs.-charging-speed-8.jpg

This is different from other EVs, which often but not always charge faster at lower SOC levels.

As a general case, perhaps try to center the charging so as to maximize rate/minimize time, taking the set limit levels into account?