Morning all,
Seems the car needs a new battery, after a long journey I came back to found the car completely dead, the remote key wouldn't even work. It started fine with a jump and the alternator seems to be working absolutely fine. First port of call is a battery change, if the problem persists I guess I'll have to look for the source of parasitic drain..

Problem is, I'm getting a complete mish-mash of information on what the correct battery for the car is. It currently has a 95ah Bosch in place, at Euro Car Parts and GSF I get various 95ah and 100ah suggestions. I called BMW and they have told me their system says 70ah or 90ah

!? They are also telling me that they're not sure if it needs a standard battery or AGM battery.
Can anyone shed any light on what the actual requirement is? The car is a 3.0i from '04.
Thanks very much!