Screw it. I just ordered the charger. If it doesn't save the battery, it's only an extra 100 bones that I'm paying. Worth a shot anyway. I'll post an update on what happens.
2012 E92 M3 | MW | DCT | KW V3 | Edition Cosmetics | 19" MORR VS8.2 - Brushed w/ Tinted Clear | F1 Pinnacle 35%