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My M5 needs a new battery after 7 plus years on the original. It's a black 90Ah battery from BMW and I believe the black case means that it's an AGM type. I can't seem to find a 90Ah replacement, just a 95Ah from Bosch or Varta. I know I need to register the battery as new but does the different rating require recoding?

 

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Hi,
I'm having the same problem - original battery 90Ah AGM - but can only find 95Ah. Any problems when you changed? Did you re-code or just register?

Thanks
 

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Hi,
I'm having the same problem - original battery 90Ah AGM - but can only find 95Ah. Any problems when you changed? Did you re-code or just register?

Thanks
You don't need any recoding since the old battery is AGM, although you still need to register the battery to let the car it's from 90ah to 95ah.
 
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