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      09-22-2020, 07:40 PM   #5
TurtleBoy
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Drives: 2019 X5 40i,2021 M340i
Join Date: Jan 2019
Location: Colorado

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Quote:
Originally Posted by OzJedi View Post
That's energy regeneration used in most of the cars now a days. Whenever you break energy is regenerated and car battery is charged.
You will also notice it shows up in instrument cluster as blue battery symbol with a gauge when you switch on fuel consumption gauge using BC button
I think it is a bit different since you don't need to be braking for it to charge, it also does it when coasting and decelerating. The alternator is decoupled from the drive train during acceleration to be more efficient.

https://www.autobytel.com/car-owners...ration-123423/
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