[0w40X1]

I didn't see anything here that answered the question.

I think BMW's marketing is a little off.

They show a photo of brake caliper, and talk about brake regeneration which is not how it works.

The alternator doesn't charge when you apply power or battery is charged.

The alternator charges when slowing down or all the time on cruise if battery is low.

I can see that also on my scangauge II whichs teaches you to conserve your electricity from battery.

If i drive around town every 2 days, the battery charge will go up to 14.7 volts all the time.

I can go on a day road trip and it takes about 500 miles to fully charge battery back to 12.8 at cruise or decealeration.

Battery voltage state of charge is gas one way or another, and the brake assist is actually charging assist.