Very timely thread. I just had my battery replaced for the third time within one year (one was the original battery). Since I only drive 4.5 miles each way it may explain the rough starts.
2014 i3 BEV
2007 328i (E92) - BMW Performance exhaust, short shift kit, handbrake and steering wheel trim - CDV delete - CREE LED corona rings - LED license plate lights
2006 325i (E90) - SOLD - projector headlights, backline taillights - satin grilles - shadowline trim - style 338 wheels
2000 ML430 - SOLD - heavily modded, I miss that truck