Just wanted to give a big thumbs up to Smoke4U - I went and bought another lightning adapter and sure enough, it does charge at <80% charge! Woohoo. Thanks for the tip.
2010 E90 335i Black Sapphire
Best Stock 1/4 time = 14.1 @ 99.4 at Bandimere Speedway (DA = 7,400ft ASL; 13.5 @ 103 corrected)