slow slow quick quick slow
DC quick charging is very useful if you need to drive more than the vehicle’s single-charge range in a single day, or you just simply forgot to charge up last night and are hovering below the 30% range. DC quick chargers can dump upwards of 130 kms of range into the bat in 30 minutes. However, the batteries pay a price for this convenience.
Battery performance and durability can deteriorate if the DC charger is used constantly.
Use of DC charging should be minimized in order to help prolong battery life. The life expectancy of most EV batteries is about 70-80 percent of capacity after 10 years of normal use. It is theorized that frequent use of fast charging - more than once or twice per day - will cost you about 1 percent of capacity per year. Which basically means very frequent users of fast chargers can expect performance on the lower end of the normal range.
Level 2 AC charging is recommended to keep the battery in optimal condition.