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EU passes law to blanket highways with fast EV chargers by 2025
(www.theverge.com)
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this post was submitted on 25 Jul 2023
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It has to do with a li-ion battery's charging curve. In the main phase of charging the charger runs in what's called constant current mode. State of charge and charge time are linearly proportional. When the battery gets to terminal voltage (about 90% charge) the charger runs in constant voltage mode where current falls off as the battery approaches full charge. You can save time and skip CV mode if you don't need that last 10%.