Good info. I think these newer OEM BMW batteries are AGM (absorptive glass mat), correct?
If so, AGM batteries are much more difficult to bring back than a lead acid battery if they die. It takes a battery conditioner and about 24 hours. Just keep that in mind if you let the car sit for awhile.
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red