That looks correct! I had to keep my 2010 750 on the BMW trickle charger ALL the time. Same for my last 3 X5's! The Rolls Royce is a little better, but if I know I am not going to drive it for 3+ days, I MUST put her on the charger. I still do not understand why BMW and BMW related cars have battery issues to this day. Our Mercedes', Range Rovers, Fords, Audis, Porsches....no battery issues!
2013 Rolls Royce Phantom Sedan,
2013 Phantom Aviator Coupe, 2013 G63 AMG