2008 C Class battery last?

[WelshBoyo]

Does anyone know how long the battery in a Mercedes C350 2008 version would last for if I don't use the car? I am just wondering if I need to get a trickle charger if I don't use the car for say a week or two?

[gizlaroc]

Should be fine, however, now coming up to 5 years old and the temperatures can kill batteries.
But I think you would be unlucky for it to die.