I had the recall done on my car last week.
I had a yellow low battery warning when I first got the car about a month ago but it went away after a day. I let the service adviser know that when I brought my car in and they said they'd do a check and they actually charged the battery for me.
No issues since then.
Current: 2011 335i xDrive Sedan, Deep Sea Blue w/Oyster Interior
Traded in: 2009 328i xDrive Coupe