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      02-26-2020, 08:58 AM   #9
perikifi
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Drives: 2020 X5 45e M Sport
Join Date: Aug 2019
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Quote:
Originally Posted by Bancroft View Post
On the other hand, isn't slow charging better for the overall battery life? Is it true that the faster you charge the sooner the battery will get old and reduce its capacity?
Not really so anymore, at least not in a significant way. BEVs that rely solely on electricity can charge faster with AC and much faster with DC. Besides, the generator in the car can charge the battery at some 15 kW in my testing. Fast charging produces heat in the cells that needs to be managed (and excessive heat would reduce cell life), but that shouldn't be a problem since the car needs temperature control capability anyway and during charging you always have power available for that.

The AC charging cable that comes with the car is 22 kW ready (three-phase 32 A 240 V). The charging electronics can push at least 15 kW into the cells. Cells are charged with DC and maybe the rectifier (AC -> DC) can't hold up pace, but that sounds strange as it shouldn't be a too expensive component.
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